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.exercism/metadata.json

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+{"track":"bash","exercise":"raindrops","id":"7f497d15e3ac43dd82a89e80571d8dd4","url":"https://exercism.io/my/solutions/7f497d15e3ac43dd82a89e80571d8dd4","handle":"jinfield","is_requester":true,"auto_approve":false}

README.md

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+# Raindrops
+
+Your task is to convert a number into a string that contains raindrop sounds corresponding to certain potential factors. A factor is a number that evenly divides into another number, leaving no remainder. The simplest way to test if a one number is a factor of another is to use the [modulo operation](https://en.wikipedia.org/wiki/Modulo_operation).
+
+The rules of `raindrops` are that if a given number:
+
+- has 3 as a factor, add 'Pling' to the result.
+- has 5 as a factor, add 'Plang' to the result.
+- has 7 as a factor, add 'Plong' to the result.
+- _does not_ have any of 3, 5, or 7 as a factor, the result should be the digits of the number.
+
+## Examples
+
+- 28 has 7 as a factor, but not 3 or 5, so the result would be "Plong".
+- 30 has both 3 and 5 as factors, but not 7, so the result would be "PlingPlang".
+- 34 is not factored by 3, 5, or 7, so the result would be "34".
+
+
+Run the tests with:
+
+```bash
+bats raindrops_test.sh
+```
+
+After the first test(s) pass, continue by commenting out or removing the
+`[[ $BATS_RUN_SKIPPED == true ]] || skip` 
+annotations prepending other tests.
+
+To run all tests, including the ones with `skip` annotations, run:
+
+```bash
+BATS_RUN_SKIPPED=true bats raindrops_test.sh
+```
+
+## Source
+
+A variation on FizzBuzz, a famous technical interview question that is intended to weed out potential candidates. That question is itself derived from Fizz Buzz, a popular children's game for teaching division. [https://en.wikipedia.org/wiki/Fizz_buzz](https://en.wikipedia.org/wiki/Fizz_buzz)
+
+
+## External utilities
+`Bash` is a language to write "scripts" -- programs that can call
+external tools, such as
+[`sed`](https://www.gnu.org/software/sed/),
+[`awk`](https://www.gnu.org/software/gawk/),
+[`date`](https://www.gnu.org/software/coreutils/manual/html_node/date-invocation.html)
+and even programs written in other programming languages, 
+like [`Python`](https://www.python.org/).
+This track does not restrict the usage of these utilities, and as long
+as your solution is portable between systems and does not require
+installation of third party applications, feel free to use them to solve
+the exercise.
+
+For an extra challenge, if you would like to have a better understanding
+of the language, try to re-implement the solution in pure `Bash`,
+without using any external tools. Note that there are some types of
+problems that bash cannot solve, such as performing floating point
+arithmetic and manipulating dates: for those, you must call out to an
+external tool.
+
+## Submitting Incomplete Solutions
+It's possible to submit an incomplete solution so you can see how others
+have completed the exercise.

raindrops.sh

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+#!/usr/bin/env bash
+
+[[ -z $1 || ! $1 =~ ^[0-9]+$ ]] && echo "Usage: $0 <number>" && exit 1
+[[ $(( $1%7 )) = 0 ]] && res+="Pling"
+[[ $(( $1%5 )) = 0 ]] && res+="Plang"
+[[ $(( $1%3 )) = 0 ]] && res+="Plong"
+[[ -z $res ]] && res=$1
+echo $res

raindrops_test.sh

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+#!/usr/bin/env bash
+
+# local version: 1.1.0.0
+
+@test "the sound for 1 is 1" {
+  #[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 1
+  (( status == 0 ))
+  [[ $output == "1" ]]
+}
+
+@test "the sound for 3 is Pling" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 3
+  (( status == 0 ))
+  [[ $output == "Pling" ]]
+}
+
+@test "the sound for 5 is Plang" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 5
+  (( status == 0 ))
+  [[ $output == "Plang" ]]
+}
+
+@test "the sound for 7 is Plong" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 7
+  (( status == 0 ))
+  [[ $output == "Plong" ]]
+}
+
+@test "the sound for 6 is Pling as it has a factor 3" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 6
+  (( status == 0 ))
+  [[ $output == "Pling" ]]
+}
+
+@test "2 to the power 3 does not make a raindrop sound as 3 is the exponent not the base" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 8
+  (( status == 0 ))
+  [[ $output == "8" ]]
+}
+
+@test "the sound for 9 is Pling as it has a factor 3" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 9
+  (( status == 0 ))
+  [[ $output == "Pling" ]]
+}
+
+@test "the sound for 10 is Plang as it has a factor 5" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 10
+  (( status == 0 ))
+  [[ $output == "Plang" ]]
+}
+
+@test "the sound for 14 is Plong as it has a factor of 7" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 14
+  (( status == 0 ))
+  [[ $output == "Plong" ]]
+}
+
+@test "the sound for 15 is PlingPlang as it has factors 3 and 5" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 15
+  (( status == 0 ))
+  [[ $output == "PlingPlang" ]]
+}
+
+@test "the sound for 21 is PlingPlong as it has factors 3 and 7" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 21
+  (( status == 0 ))
+  [[ $output == "PlingPlong" ]]
+}
+
+@test "the sound for 25 is Plang as it has a factor 5" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 25
+  (( status == 0 ))
+  [[ $output == "Plang" ]]
+}
+
+@test "the sound for 27 is Pling as it has a factor 3" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 27
+  (( status == 0 ))
+  [[ $output == "Pling" ]]
+}
+
+@test "the sound for 35 is PlangPlong as it has factors 5 and 7" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 35
+  (( status == 0 ))
+  [[ $output == "PlangPlong" ]]
+}
+
+@test "the sound for 49 is Plong as it has a factor 7" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 49
+  (( status == 0 ))
+  [[ $output == "Plong" ]]
+}
+
+@test "the sound for 52 is 52" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 52
+  (( status == 0 ))
+  [[ $output == "52" ]]
+}
+
+@test "the sound for 105 is PlingPlangPlong as it has factors 3, 5 and 7" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 105
+  (( status == 0 ))
+  [[ $output == "PlingPlangPlong" ]]
+}
+
+@test "the sound for 3125 is Plang as it has a factor 5" {
+  [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  run bash raindrops.sh 3125
+  (( status == 0 ))
+  [[ $output == "Plang" ]]
+}