Solution to reverse string in Bash

bash/reverse-string/reverse_string.bats

@@ -0,0 +1,64 @@
+#!/usr/bin/env bats
+load bats-extra
+
+# local version: 1.2.0.1
+
+@test "an empty string" {
+  #[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash reverse_string.sh ""
+
+  assert_success
+  assert_output ""
+}
+
+@test "a word" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash reverse_string.sh "robot"
+
+  assert_success
+  assert_output "tobor"
+}
+
+@test "a capitalised word" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash reverse_string.sh "Ramen"
+
+  assert_success
+  assert_output "nemaR"
+}
+
+@test "a sentence with punctuation" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash reverse_string.sh "I'm hungry!"
+
+  assert_success
+  assert_output "!yrgnuh m'I"
+}
+
+@test "a palindrome" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash reverse_string.sh "racecar"
+
+  assert_success
+  assert_output "racecar"
+}
+
+@test "an even-sized word" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash reverse_string.sh "drawer"
+
+  assert_success
+  assert_output "reward"
+}
+
+# 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 "avoid globbing" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash reverse_string.sh " a *  b"
+
+  assert_success
+  assert_output "b  * a "
+}