Solution to resistor-color-duo in Bash
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{
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"authors": [
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"glennj"
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],
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"contributors": [
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"bkhl",
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"guygastineau",
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"IsaacG",
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"kotp"
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],
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"files": {
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"solution": [
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"resistor_color_duo.sh"
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],
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"test": [
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"resistor_color_duo.bats"
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],
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"example": [
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".meta/example.sh"
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]
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},
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"blurb": "Convert color codes, as used on resistors, to a numeric value.",
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"source": "Maud de Vries, Erik Schierboom",
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"source_url": "https://github.com/exercism/problem-specifications/issues/1464"
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}
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{"track":"bash","exercise":"resistor-color-duo","id":"7e7f83b104f4456080120e237c9cbda1","url":"https://exercism.org/tracks/bash/exercises/resistor-color-duo","handle":"Kimawari","is_requester":true,"auto_approve":false}
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# Help
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## Running the tests
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Each exercise contains a test file.
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Run the tests using the `bats` program.
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```bash
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bats hello_world.bats
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```
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`bats` will need to be installed.
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See the [Testing on the Bash track][tests] page for instructions to install `bats` for your system.
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[tests]: https://exercism.org/docs/tracks/bash/tests
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## Help for assert functions
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The tests use functions from the [bats-assert][bats-assert] library.
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Help for the various `assert*` functions can be found there.
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[bats-assert]: https://github.com/bats-core/bats-assert
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## Skipped tests
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Solving an exercise means making all its tests pass.
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By default, only one test (the first one) is executed when you run the tests.
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This is intentional, as it allows you to focus on just making that one test pass.
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Once it passes, you can enable the next test by commenting out or removing the next annotation:
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```bash
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[[ $BATS_RUN_SKIPPED == true ]] || skip
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```
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## Overriding skips
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To run all tests, including the ones with `skip` annotations, you can run:
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```bash
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BATS_RUN_SKIPPED=true bats exercise_name.bats
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```
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It can be convenient to use a wrapper function to save on typing:
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```bash
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bats() {
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BATS_RUN_SKIPPED=true command bats *.bats
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}
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```
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Then run tests with just:
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```bash
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bats
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```
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## Submitting your solution
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You can submit your solution using the `exercism submit resistor_color_duo.sh` command.
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This command will upload your solution to the Exercism website and print the solution page's URL.
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It's possible to submit an incomplete solution which allows you to:
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- See how others have completed the exercise
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- Request help from a mentor
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## Need to get help?
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If you'd like help solving the exercise, check the following pages:
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- The [Bash track's documentation](https://exercism.org/docs/tracks/bash)
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- [Exercism's programming category on the forum](https://forum.exercism.org/c/programming/5)
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- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
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Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
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Check your code for syntax errors: paste your code into
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[https://shellcheck.net](https://shellcheck.net) (or [install it](https://github.com/koalaman/shellcheck#user-content-installing) on your machine).
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Stack Overflow will be your first stop for bash questions.
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* start with the [`bash` tag](https://stackoverflow.com/questions/tagged/bash) to search for your specific question: it's probably already been asked
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* under the bash tag on Stackoverflow, the [Learn more...](https://stackoverflow.com/tags/bash/info) link has _tons_ of good information.
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* the "Books and Resources" section is particularly useful.
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* the [`bash` tag](https://unix.stackexchange.com/questions/tagged/bash) on Unix & Linux is also active
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## External utilities
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`bash` is a language to write "scripts" -- programs that can call
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external tools, such as
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[`sed`](https://www.gnu.org/software/sed/),
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[`awk`](https://www.gnu.org/software/gawk/),
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[`date`](https://www.gnu.org/software/coreutils/manual/html_node/date-invocation.html)
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and even programs written in other programming languages,
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like [`Python`](https://www.python.org/).
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This track does not restrict the usage of these utilities, and as long
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as your solution is portable between systems and does not require
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installation of third party applications, feel free to use them to solve
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the exercise.
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For an extra challenge, if you would like to have a better understanding of
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the language, try to re-implement the solution in pure bash, without using
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any external tools. There are some types of problems that bash cannot solve,
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such as floating point arithmetic and manipulating dates: for those, you
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must call out to an external tool.
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# Resistor Color Duo
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Welcome to Resistor Color Duo on Exercism's Bash Track.
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If you need help running the tests or submitting your code, check out `HELP.md`.
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## Instructions
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If you want to build something using a Raspberry Pi, you'll probably use _resistors_.
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For this exercise, you need to know two things about them:
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- Each resistor has a resistance value.
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- Resistors are small - so small in fact that if you printed the resistance value on them, it would be hard to read.
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To get around this problem, manufacturers print color-coded bands onto the resistors to denote their resistance values.
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Each band has a position and a numeric value.
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The first 2 bands of a resistor have a simple encoding scheme: each color maps to a single number.
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For example, if they printed a brown band (value 1) followed by a green band (value 5), it would translate to the number 15.
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In this exercise you are going to create a helpful program so that you don't have to remember the values of the bands.
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The program will take color names as input and output a two digit number, even if the input is more than two colors!
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The band colors are encoded as follows:
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- Black: 0
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- Brown: 1
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- Red: 2
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- Orange: 3
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- Yellow: 4
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- Green: 5
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- Blue: 6
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- Violet: 7
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- Grey: 8
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- White: 9
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From the example above:
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brown-green should return 15
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brown-green-violet should return 15 too, ignoring the third color.
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## Source
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### Created by
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- @glennj
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### Contributed to by
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- @bkhl
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- @guygastineau
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- @IsaacG
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- @kotp
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### Based on
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Maud de Vries, Erik Schierboom - https://github.com/exercism/problem-specifications/issues/1464
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# This is the source code for bats-support and bats-assert, concatenated
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# * https://github.com/bats-core/bats-support
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# * https://github.com/bats-core/bats-assert
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#
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# Comments have been removed to save space. See the git repos for full source code.
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############################################################
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#
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# bats-support - Supporting library for Bats test helpers
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#
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# Written in 2016 by Zoltan Tombol <zoltan dot tombol at gmail dot com>
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#
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# To the extent possible under law, the author(s) have dedicated all
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# copyright and related and neighboring rights to this software to the
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# public domain worldwide. This software is distributed without any
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# warranty.
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#
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# You should have received a copy of the CC0 Public Domain Dedication
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# along with this software. If not, see
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# <http://creativecommons.org/publicdomain/zero/1.0/>.
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#
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fail() {
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(( $# == 0 )) && batslib_err || batslib_err "$@"
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return 1
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}
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batslib_is_caller() {
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local -i is_mode_direct=1
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# Handle options.
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while (( $# > 0 )); do
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case "$1" in
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-i|--indirect) is_mode_direct=0; shift ;;
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--) shift; break ;;
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*) break ;;
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esac
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done
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# Arguments.
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local -r func="$1"
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# Check call stack.
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if (( is_mode_direct )); then
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[[ $func == "${FUNCNAME[2]}" ]] && return 0
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else
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local -i depth
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for (( depth=2; depth<${#FUNCNAME[@]}; ++depth )); do
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[[ $func == "${FUNCNAME[$depth]}" ]] && return 0
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done
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fi
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return 1
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}
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batslib_err() {
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{ if (( $# > 0 )); then
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echo "$@"
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else
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cat -
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fi
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} >&2
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}
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batslib_count_lines() {
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local -i n_lines=0
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local line
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while IFS='' read -r line || [[ -n $line ]]; do
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(( ++n_lines ))
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done < <(printf '%s' "$1")
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echo "$n_lines"
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}
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batslib_is_single_line() {
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for string in "$@"; do
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(( $(batslib_count_lines "$string") > 1 )) && return 1
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done
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return 0
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}
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batslib_get_max_single_line_key_width() {
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local -i max_len=-1
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while (( $# != 0 )); do
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local -i key_len="${#1}"
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batslib_is_single_line "$2" && (( key_len > max_len )) && max_len="$key_len"
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shift 2
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done
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echo "$max_len"
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}
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batslib_print_kv_single() {
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local -ir col_width="$1"; shift
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while (( $# != 0 )); do
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printf '%-*s : %s\n' "$col_width" "$1" "$2"
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shift 2
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done
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}
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batslib_print_kv_multi() {
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while (( $# != 0 )); do
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printf '%s (%d lines):\n' "$1" "$( batslib_count_lines "$2" )"
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printf '%s\n' "$2"
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shift 2
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done
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}
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batslib_print_kv_single_or_multi() {
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local -ir width="$1"; shift
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local -a pairs=( "$@" )
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local -a values=()
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local -i i
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for (( i=1; i < ${#pairs[@]}; i+=2 )); do
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values+=( "${pairs[$i]}" )
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done
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if batslib_is_single_line "${values[@]}"; then
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batslib_print_kv_single "$width" "${pairs[@]}"
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else
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local -i i
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for (( i=1; i < ${#pairs[@]}; i+=2 )); do
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pairs[$i]="$( batslib_prefix < <(printf '%s' "${pairs[$i]}") )"
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done
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batslib_print_kv_multi "${pairs[@]}"
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fi
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}
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batslib_prefix() {
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local -r prefix="${1:- }"
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local line
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while IFS='' read -r line || [[ -n $line ]]; do
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printf '%s%s\n' "$prefix" "$line"
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done
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}
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batslib_mark() {
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local -r symbol="$1"; shift
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# Sort line numbers.
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set -- $( sort -nu <<< "$( printf '%d\n' "$@" )" )
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local line
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local -i idx=0
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while IFS='' read -r line || [[ -n $line ]]; do
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||||
if (( ${1:--1} == idx )); then
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printf '%s\n' "${symbol}${line:${#symbol}}"
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shift
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else
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printf '%s\n' "$line"
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fi
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(( ++idx ))
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done
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}
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batslib_decorate() {
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echo
|
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echo "-- $1 --"
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cat -
|
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echo '--'
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echo
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}
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############################################################
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assert() {
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if ! "$@"; then
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batslib_print_kv_single 10 'expression' "$*" \
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| batslib_decorate 'assertion failed' \
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| fail
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fi
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}
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assert_equal() {
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if [[ $1 != "$2" ]]; then
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batslib_print_kv_single_or_multi 8 \
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'expected' "$2" \
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'actual' "$1" \
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| batslib_decorate 'values do not equal' \
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| fail
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fi
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}
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||||
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assert_failure() {
|
||||
: "${output?}"
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: "${status?}"
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(( $# > 0 )) && local -r expected="$1"
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if (( status == 0 )); then
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||||
batslib_print_kv_single_or_multi 6 'output' "$output" \
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| batslib_decorate 'command succeeded, but it was expected to fail' \
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| fail
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elif (( $# > 0 )) && (( status != expected )); then
|
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{ local -ir width=8
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batslib_print_kv_single "$width" \
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'expected' "$expected" \
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'actual' "$status"
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batslib_print_kv_single_or_multi "$width" \
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'output' "$output"
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} \
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| batslib_decorate 'command failed as expected, but status differs' \
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| fail
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||||
fi
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||||
}
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||||
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||||
assert_line() {
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||||
local -i is_match_line=0
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||||
local -i is_mode_partial=0
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||||
local -i is_mode_regexp=0
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||||
: "${lines?}"
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||||
|
||||
# Handle options.
|
||||
while (( $# > 0 )); do
|
||||
case "$1" in
|
||||
-n|--index)
|
||||
if (( $# < 2 )) || ! [[ $2 =~ ^([0-9]|[1-9][0-9]+)$ ]]; then
|
||||
echo "\`--index' requires an integer argument: \`$2'" \
|
||||
| batslib_decorate 'ERROR: assert_line' \
|
||||
| fail
|
||||
return $?
|
||||
fi
|
||||
is_match_line=1
|
||||
local -ri idx="$2"
|
||||
shift 2
|
||||
;;
|
||||
-p|--partial) is_mode_partial=1; shift ;;
|
||||
-e|--regexp) is_mode_regexp=1; shift ;;
|
||||
--) shift; break ;;
|
||||
*) break ;;
|
||||
esac
|
||||
done
|
||||
|
||||
if (( is_mode_partial )) && (( is_mode_regexp )); then
|
||||
echo "\`--partial' and \`--regexp' are mutually exclusive" \
|
||||
| batslib_decorate 'ERROR: assert_line' \
|
||||
| fail
|
||||
return $?
|
||||
fi
|
||||
|
||||
# Arguments.
|
||||
local -r expected="$1"
|
||||
|
||||
if (( is_mode_regexp == 1 )) && [[ '' =~ $expected ]] || (( $? == 2 )); then
|
||||
echo "Invalid extended regular expression: \`$expected'" \
|
||||
| batslib_decorate 'ERROR: assert_line' \
|
||||
| fail
|
||||
return $?
|
||||
fi
|
||||
|
||||
# Matching.
|
||||
if (( is_match_line )); then
|
||||
# Specific line.
|
||||
if (( is_mode_regexp )); then
|
||||
if ! [[ ${lines[$idx]} =~ $expected ]]; then
|
||||
batslib_print_kv_single 6 \
|
||||
'index' "$idx" \
|
||||
'regexp' "$expected" \
|
||||
'line' "${lines[$idx]}" \
|
||||
| batslib_decorate 'regular expression does not match line' \
|
||||
| fail
|
||||
fi
|
||||
elif (( is_mode_partial )); then
|
||||
if [[ ${lines[$idx]} != *"$expected"* ]]; then
|
||||
batslib_print_kv_single 9 \
|
||||
'index' "$idx" \
|
||||
'substring' "$expected" \
|
||||
'line' "${lines[$idx]}" \
|
||||
| batslib_decorate 'line does not contain substring' \
|
||||
| fail
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||||
fi
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||||
else
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||||
if [[ ${lines[$idx]} != "$expected" ]]; then
|
||||
batslib_print_kv_single 8 \
|
||||
'index' "$idx" \
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||||
'expected' "$expected" \
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||||
'actual' "${lines[$idx]}" \
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||||
| batslib_decorate 'line differs' \
|
||||
| fail
|
||||
fi
|
||||
fi
|
||||
else
|
||||
# Contained in output.
|
||||
if (( is_mode_regexp )); then
|
||||
local -i idx
|
||||
for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
|
||||
[[ ${lines[$idx]} =~ $expected ]] && return 0
|
||||
done
|
||||
{ local -ar single=( 'regexp' "$expected" )
|
||||
local -ar may_be_multi=( 'output' "$output" )
|
||||
local -ir width="$( batslib_get_max_single_line_key_width "${single[@]}" "${may_be_multi[@]}" )"
|
||||
batslib_print_kv_single "$width" "${single[@]}"
|
||||
batslib_print_kv_single_or_multi "$width" "${may_be_multi[@]}"
|
||||
} \
|
||||
| batslib_decorate 'no output line matches regular expression' \
|
||||
| fail
|
||||
elif (( is_mode_partial )); then
|
||||
local -i idx
|
||||
for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
|
||||
[[ ${lines[$idx]} == *"$expected"* ]] && return 0
|
||||
done
|
||||
{ local -ar single=( 'substring' "$expected" )
|
||||
local -ar may_be_multi=( 'output' "$output" )
|
||||
local -ir width="$( batslib_get_max_single_line_key_width "${single[@]}" "${may_be_multi[@]}" )"
|
||||
batslib_print_kv_single "$width" "${single[@]}"
|
||||
batslib_print_kv_single_or_multi "$width" "${may_be_multi[@]}"
|
||||
} \
|
||||
| batslib_decorate 'no output line contains substring' \
|
||||
| fail
|
||||
else
|
||||
local -i idx
|
||||
for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
|
||||
[[ ${lines[$idx]} == "$expected" ]] && return 0
|
||||
done
|
||||
{ local -ar single=( 'line' "$expected" )
|
||||
local -ar may_be_multi=( 'output' "$output" )
|
||||
local -ir width="$( batslib_get_max_single_line_key_width "${single[@]}" "${may_be_multi[@]}" )"
|
||||
batslib_print_kv_single "$width" "${single[@]}"
|
||||
batslib_print_kv_single_or_multi "$width" "${may_be_multi[@]}"
|
||||
} \
|
||||
| batslib_decorate 'output does not contain line' \
|
||||
| fail
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
assert_output() {
|
||||
local -i is_mode_partial=0
|
||||
local -i is_mode_regexp=0
|
||||
local -i is_mode_nonempty=0
|
||||
local -i use_stdin=0
|
||||
: "${output?}"
|
||||
|
||||
# Handle options.
|
||||
if (( $# == 0 )); then
|
||||
is_mode_nonempty=1
|
||||
fi
|
||||
|
||||
while (( $# > 0 )); do
|
||||
case "$1" in
|
||||
-p|--partial) is_mode_partial=1; shift ;;
|
||||
-e|--regexp) is_mode_regexp=1; shift ;;
|
||||
-|--stdin) use_stdin=1; shift ;;
|
||||
--) shift; break ;;
|
||||
*) break ;;
|
||||
esac
|
||||
done
|
||||
|
||||
if (( is_mode_partial )) && (( is_mode_regexp )); then
|
||||
echo "\`--partial' and \`--regexp' are mutually exclusive" \
|
||||
| batslib_decorate 'ERROR: assert_output' \
|
||||
| fail
|
||||
return $?
|
||||
fi
|
||||
|
||||
# Arguments.
|
||||
local expected
|
||||
if (( use_stdin )); then
|
||||
expected="$(cat -)"
|
||||
else
|
||||
expected="${1-}"
|
||||
fi
|
||||
|
||||
# Matching.
|
||||
if (( is_mode_nonempty )); then
|
||||
if [ -z "$output" ]; then
|
||||
echo 'expected non-empty output, but output was empty' \
|
||||
| batslib_decorate 'no output' \
|
||||
| fail
|
||||
fi
|
||||
elif (( is_mode_regexp )); then
|
||||
if [[ '' =~ $expected ]] || (( $? == 2 )); then
|
||||
echo "Invalid extended regular expression: \`$expected'" \
|
||||
| batslib_decorate 'ERROR: assert_output' \
|
||||
| fail
|
||||
elif ! [[ $output =~ $expected ]]; then
|
||||
batslib_print_kv_single_or_multi 6 \
|
||||
'regexp' "$expected" \
|
||||
'output' "$output" \
|
||||
| batslib_decorate 'regular expression does not match output' \
|
||||
| fail
|
||||
fi
|
||||
elif (( is_mode_partial )); then
|
||||
if [[ $output != *"$expected"* ]]; then
|
||||
batslib_print_kv_single_or_multi 9 \
|
||||
'substring' "$expected" \
|
||||
'output' "$output" \
|
||||
| batslib_decorate 'output does not contain substring' \
|
||||
| fail
|
||||
fi
|
||||
else
|
||||
if [[ $output != "$expected" ]]; then
|
||||
batslib_print_kv_single_or_multi 8 \
|
||||
'expected' "$expected" \
|
||||
'actual' "$output" \
|
||||
| batslib_decorate 'output differs' \
|
||||
| fail
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
assert_success() {
|
||||
: "${output?}"
|
||||
: "${status?}"
|
||||
|
||||
if (( status != 0 )); then
|
||||
{ local -ir width=6
|
||||
batslib_print_kv_single "$width" 'status' "$status"
|
||||
batslib_print_kv_single_or_multi "$width" 'output' "$output"
|
||||
} \
|
||||
| batslib_decorate 'command failed' \
|
||||
| fail
|
||||
fi
|
||||
}
|
||||
|
||||
refute() {
|
||||
if "$@"; then
|
||||
batslib_print_kv_single 10 'expression' "$*" \
|
||||
| batslib_decorate 'assertion succeeded, but it was expected to fail' \
|
||||
| fail
|
||||
fi
|
||||
}
|
||||
|
||||
refute_line() {
|
||||
local -i is_match_line=0
|
||||
local -i is_mode_partial=0
|
||||
local -i is_mode_regexp=0
|
||||
: "${lines?}"
|
||||
|
||||
# Handle options.
|
||||
while (( $# > 0 )); do
|
||||
case "$1" in
|
||||
-n|--index)
|
||||
if (( $# < 2 )) || ! [[ $2 =~ ^([0-9]|[1-9][0-9]+)$ ]]; then
|
||||
echo "\`--index' requires an integer argument: \`$2'" \
|
||||
| batslib_decorate 'ERROR: refute_line' \
|
||||
| fail
|
||||
return $?
|
||||
fi
|
||||
is_match_line=1
|
||||
local -ri idx="$2"
|
||||
shift 2
|
||||
;;
|
||||
-p|--partial) is_mode_partial=1; shift ;;
|
||||
-e|--regexp) is_mode_regexp=1; shift ;;
|
||||
--) shift; break ;;
|
||||
*) break ;;
|
||||
esac
|
||||
done
|
||||
|
||||
if (( is_mode_partial )) && (( is_mode_regexp )); then
|
||||
echo "\`--partial' and \`--regexp' are mutually exclusive" \
|
||||
| batslib_decorate 'ERROR: refute_line' \
|
||||
| fail
|
||||
return $?
|
||||
fi
|
||||
|
||||
# Arguments.
|
||||
local -r unexpected="$1"
|
||||
|
||||
if (( is_mode_regexp == 1 )) && [[ '' =~ $unexpected ]] || (( $? == 2 )); then
|
||||
echo "Invalid extended regular expression: \`$unexpected'" \
|
||||
| batslib_decorate 'ERROR: refute_line' \
|
||||
| fail
|
||||
return $?
|
||||
fi
|
||||
|
||||
# Matching.
|
||||
if (( is_match_line )); then
|
||||
# Specific line.
|
||||
if (( is_mode_regexp )); then
|
||||
if [[ ${lines[$idx]} =~ $unexpected ]]; then
|
||||
batslib_print_kv_single 6 \
|
||||
'index' "$idx" \
|
||||
'regexp' "$unexpected" \
|
||||
'line' "${lines[$idx]}" \
|
||||
| batslib_decorate 'regular expression should not match line' \
|
||||
| fail
|
||||
fi
|
||||
elif (( is_mode_partial )); then
|
||||
if [[ ${lines[$idx]} == *"$unexpected"* ]]; then
|
||||
batslib_print_kv_single 9 \
|
||||
'index' "$idx" \
|
||||
'substring' "$unexpected" \
|
||||
'line' "${lines[$idx]}" \
|
||||
| batslib_decorate 'line should not contain substring' \
|
||||
| fail
|
||||
fi
|
||||
else
|
||||
if [[ ${lines[$idx]} == "$unexpected" ]]; then
|
||||
batslib_print_kv_single 5 \
|
||||
'index' "$idx" \
|
||||
'line' "${lines[$idx]}" \
|
||||
| batslib_decorate 'line should differ' \
|
||||
| fail
|
||||
fi
|
||||
fi
|
||||
else
|
||||
# Line contained in output.
|
||||
if (( is_mode_regexp )); then
|
||||
local -i idx
|
||||
for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
|
||||
if [[ ${lines[$idx]} =~ $unexpected ]]; then
|
||||
{ local -ar single=( 'regexp' "$unexpected" 'index' "$idx" )
|
||||
local -a may_be_multi=( 'output' "$output" )
|
||||
local -ir width="$( batslib_get_max_single_line_key_width "${single[@]}" "${may_be_multi[@]}" )"
|
||||
batslib_print_kv_single "$width" "${single[@]}"
|
||||
if batslib_is_single_line "${may_be_multi[1]}"; then
|
||||
batslib_print_kv_single "$width" "${may_be_multi[@]}"
|
||||
else
|
||||
may_be_multi[1]="$( printf '%s' "${may_be_multi[1]}" | batslib_prefix | batslib_mark '>' "$idx" )"
|
||||
batslib_print_kv_multi "${may_be_multi[@]}"
|
||||
fi
|
||||
} \
|
||||
| batslib_decorate 'no line should match the regular expression' \
|
||||
| fail
|
||||
return $?
|
||||
fi
|
||||
done
|
||||
elif (( is_mode_partial )); then
|
||||
local -i idx
|
||||
for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
|
||||
if [[ ${lines[$idx]} == *"$unexpected"* ]]; then
|
||||
{ local -ar single=( 'substring' "$unexpected" 'index' "$idx" )
|
||||
local -a may_be_multi=( 'output' "$output" )
|
||||
local -ir width="$( batslib_get_max_single_line_key_width "${single[@]}" "${may_be_multi[@]}" )"
|
||||
batslib_print_kv_single "$width" "${single[@]}"
|
||||
if batslib_is_single_line "${may_be_multi[1]}"; then
|
||||
batslib_print_kv_single "$width" "${may_be_multi[@]}"
|
||||
else
|
||||
may_be_multi[1]="$( printf '%s' "${may_be_multi[1]}" | batslib_prefix | batslib_mark '>' "$idx" )"
|
||||
batslib_print_kv_multi "${may_be_multi[@]}"
|
||||
fi
|
||||
} \
|
||||
| batslib_decorate 'no line should contain substring' \
|
||||
| fail
|
||||
return $?
|
||||
fi
|
||||
done
|
||||
else
|
||||
local -i idx
|
||||
for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
|
||||
if [[ ${lines[$idx]} == "$unexpected" ]]; then
|
||||
{ local -ar single=( 'line' "$unexpected" 'index' "$idx" )
|
||||
local -a may_be_multi=( 'output' "$output" )
|
||||
local -ir width="$( batslib_get_max_single_line_key_width "${single[@]}" "${may_be_multi[@]}" )"
|
||||
batslib_print_kv_single "$width" "${single[@]}"
|
||||
if batslib_is_single_line "${may_be_multi[1]}"; then
|
||||
batslib_print_kv_single "$width" "${may_be_multi[@]}"
|
||||
else
|
||||
may_be_multi[1]="$( printf '%s' "${may_be_multi[1]}" | batslib_prefix | batslib_mark '>' "$idx" )"
|
||||
batslib_print_kv_multi "${may_be_multi[@]}"
|
||||
fi
|
||||
} \
|
||||
| batslib_decorate 'line should not be in output' \
|
||||
| fail
|
||||
return $?
|
||||
fi
|
||||
done
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
refute_output() {
|
||||
local -i is_mode_partial=0
|
||||
local -i is_mode_regexp=0
|
||||
local -i is_mode_empty=0
|
||||
local -i use_stdin=0
|
||||
: "${output?}"
|
||||
|
||||
# Handle options.
|
||||
if (( $# == 0 )); then
|
||||
is_mode_empty=1
|
||||
fi
|
||||
|
||||
while (( $# > 0 )); do
|
||||
case "$1" in
|
||||
-p|--partial) is_mode_partial=1; shift ;;
|
||||
-e|--regexp) is_mode_regexp=1; shift ;;
|
||||
-|--stdin) use_stdin=1; shift ;;
|
||||
--) shift; break ;;
|
||||
*) break ;;
|
||||
esac
|
||||
done
|
||||
|
||||
if (( is_mode_partial )) && (( is_mode_regexp )); then
|
||||
echo "\`--partial' and \`--regexp' are mutually exclusive" \
|
||||
| batslib_decorate 'ERROR: refute_output' \
|
||||
| fail
|
||||
return $?
|
||||
fi
|
||||
|
||||
# Arguments.
|
||||
local unexpected
|
||||
if (( use_stdin )); then
|
||||
unexpected="$(cat -)"
|
||||
else
|
||||
unexpected="${1-}"
|
||||
fi
|
||||
|
||||
if (( is_mode_regexp == 1 )) && [[ '' =~ $unexpected ]] || (( $? == 2 )); then
|
||||
echo "Invalid extended regular expression: \`$unexpected'" \
|
||||
| batslib_decorate 'ERROR: refute_output' \
|
||||
| fail
|
||||
return $?
|
||||
fi
|
||||
|
||||
# Matching.
|
||||
if (( is_mode_empty )); then
|
||||
if [ -n "$output" ]; then
|
||||
batslib_print_kv_single_or_multi 6 \
|
||||
'output' "$output" \
|
||||
| batslib_decorate 'output non-empty, but expected no output' \
|
||||
| fail
|
||||
fi
|
||||
elif (( is_mode_regexp )); then
|
||||
if [[ $output =~ $unexpected ]]; then
|
||||
batslib_print_kv_single_or_multi 6 \
|
||||
'regexp' "$unexpected" \
|
||||
'output' "$output" \
|
||||
| batslib_decorate 'regular expression should not match output' \
|
||||
| fail
|
||||
fi
|
||||
elif (( is_mode_partial )); then
|
||||
if [[ $output == *"$unexpected"* ]]; then
|
||||
batslib_print_kv_single_or_multi 9 \
|
||||
'substring' "$unexpected" \
|
||||
'output' "$output" \
|
||||
| batslib_decorate 'output should not contain substring' \
|
||||
| fail
|
||||
fi
|
||||
else
|
||||
if [[ $output == "$unexpected" ]]; then
|
||||
batslib_print_kv_single_or_multi 6 \
|
||||
'output' "$output" \
|
||||
| batslib_decorate 'output equals, but it was expected to differ' \
|
||||
| fail
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
|
@ -0,0 +1,82 @@
|
|||
#!/usr/bin/env bats
|
||||
load bats-extra
|
||||
|
||||
# local version: 2.1.0.1
|
||||
# add test for invalid color
|
||||
|
||||
@test "brown black" {
|
||||
#[[ $BATS_RUN_SKIPPED == "true" ]] || skip
|
||||
run bash resistor_color_duo.sh brown black
|
||||
assert_success
|
||||
assert_output "10"
|
||||
}
|
||||
|
||||
@test "blue grey" {
|
||||
[[ $BATS_RUN_SKIPPED == "true" ]] || skip
|
||||
run bash resistor_color_duo.sh blue grey
|
||||
assert_success
|
||||
assert_output "68"
|
||||
}
|
||||
|
||||
@test "yellow violet" {
|
||||
[[ $BATS_RUN_SKIPPED == "true" ]] || skip
|
||||
run bash resistor_color_duo.sh yellow violet
|
||||
assert_success
|
||||
assert_output "47"
|
||||
}
|
||||
|
||||
@test "white red" {
|
||||
[[ $BATS_RUN_SKIPPED == "true" ]] || skip
|
||||
run bash resistor_color_duo.sh white red
|
||||
assert_success
|
||||
assert_output "92"
|
||||
}
|
||||
|
||||
@test "orange orange" {
|
||||
[[ $BATS_RUN_SKIPPED == "true" ]] || skip
|
||||
run bash resistor_color_duo.sh orange orange
|
||||
assert_success
|
||||
assert_output "33"
|
||||
}
|
||||
|
||||
@test "invalid color" {
|
||||
[[ $BATS_RUN_SKIPPED == "true" ]] || skip
|
||||
run bash resistor_color_duo.sh foo
|
||||
assert_failure
|
||||
assert_output --partial "invalid color"
|
||||
}
|
||||
|
||||
@test "one valid color and one invalid color" {
|
||||
[[ $BATS_RUN_SKIPPED == "true" ]] || skip
|
||||
run bash resistor_color_duo.sh blue foo
|
||||
assert_failure
|
||||
assert_output --partial "invalid color"
|
||||
}
|
||||
|
||||
@test "one invalid color and one valid color" {
|
||||
[[ $BATS_RUN_SKIPPED == "true" ]] || skip
|
||||
run bash resistor_color_duo.sh foo blue
|
||||
assert_failure
|
||||
assert_output --partial "invalid color"
|
||||
}
|
||||
|
||||
@test "ignore too many colors" {
|
||||
[[ $BATS_RUN_SKIPPED == "true" ]] || skip
|
||||
run bash resistor_color_duo.sh green brown orange
|
||||
assert_success
|
||||
assert_output "51"
|
||||
}
|
||||
|
||||
@test "black brown" {
|
||||
[[ $BATS_RUN_SKIPPED == "true" ]] || skip
|
||||
run bash resistor_color_duo.sh black brown
|
||||
assert_success
|
||||
assert_output "1"
|
||||
}
|
||||
|
||||
@test "black grey" {
|
||||
[[ $BATS_RUN_SKIPPED == "true" ]] || skip
|
||||
run bash resistor_color_duo.sh black grey
|
||||
assert_success
|
||||
assert_output "8"
|
||||
}
|
||||
|
|
@ -0,0 +1,46 @@
|
|||
#!/usr/bin/env bash
|
||||
|
||||
# Initialize variables for the first and second bands
|
||||
first_band=""
|
||||
second_band=""
|
||||
|
||||
# Iterate over the color arguments
|
||||
for ((i=1; i<=2; i++)); do
|
||||
color="${!i}" # Get the value of the i-th argument
|
||||
value="" # Initialize the value for the color
|
||||
|
||||
# Match the color to its numeric value using a case statement
|
||||
case $color in
|
||||
black) value="0" ;;
|
||||
brown) value="1" ;;
|
||||
red) value="2" ;;
|
||||
orange) value="3" ;;
|
||||
yellow) value="4" ;;
|
||||
green) value="5" ;;
|
||||
blue) value="6" ;;
|
||||
violet) value="7" ;;
|
||||
grey) value="8" ;;
|
||||
white) value="9" ;;
|
||||
esac
|
||||
|
||||
# Check if the color value is empty (unrecognized color)
|
||||
if [ -z "$value" ]; then
|
||||
echo "invalid color"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Assign the value to the corresponding band
|
||||
if [ -z "$first_band" ]; then
|
||||
first_band="$value"
|
||||
elif [ -z "$second_band" ]; then
|
||||
second_band="$value"
|
||||
break # Break the loop after finding the first two bands
|
||||
fi
|
||||
done
|
||||
|
||||
# Print the resulting number
|
||||
if [ "$first_band" = "0" ]; then
|
||||
echo "$second_band"
|
||||
else
|
||||
echo "$first_band$second_band"
|
||||
fi
|
||||
Loading…
Reference in New Issue