Solved acronym in Bash

bash/acronym/acronym.bats

@@ -0,0 +1,78 @@
+#!/usr/bin/env bats
+load bats-extra
+
+# local version: 1.7.0.1
+
+@test 'basic' {
+  #[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash acronym.sh 'Portable Network Graphics'
+  assert_success
+  assert_output 'PNG'
+}
+
+@test 'lowercase words' {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash acronym.sh 'Ruby on Rails'
+  assert_success
+  assert_output 'ROR'
+}
+
+@test 'punctuation' {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash acronym.sh 'First In, First Out'
+  assert_success
+  assert_output 'FIFO'
+}
+
+@test 'all caps word' {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash acronym.sh 'GNU Image Manipulation Program'
+  assert_success
+  assert_output 'GIMP'
+}
+
+@test 'punctuation without whitespace' {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash acronym.sh 'Complementary metal-oxide semiconductor'
+  assert_success
+  assert_output 'CMOS'
+}
+
+@test 'very long abbreviation' {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash acronym.sh 'Rolling On The Floor Laughing So Hard That My Dogs Came Over And Licked Me'
+  assert_success
+  assert_output 'ROTFLSHTMDCOALM'
+}
+
+@test "consecutive delimiters" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash acronym.sh "Something - I made up from thin air"
+  assert_success
+  assert_output "SIMUFTA"
+}
+
+@test "apostrophes" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash acronym.sh "Halley's Comet"
+  assert_success
+  assert_output "HC"
+}
+
+@test "underscore emphasis" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash acronym.sh "The Road __Not__ Taken"
+  assert_success
+  assert_output "TRNT"
+}
+
+# bash-specific test: Focus the student's attention on the effects of 
+# word splitting and filename expansion:
+# https://www.gnu.org/software/bash/manual/bash.html#Shell-Expansions
+
+@test "contains shell globbing character" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash acronym.sh "Two * Words"
+  assert_success
+  assert_output "TW"
+}