Add spec generator for acronym (#635)

* Add spec generator for acronym

* rm -rf

Author: ryanplusplus

bin/test

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+# Runs tests for all provided slugs
+
+RESULT=0
+
+rm -rf test-exercises
+cp -r exercises/practice test-exercises
+cd test-exercises || exit 1
+
+for i in "$@"
+do
+  if test -d "$i"
+  then
+    echo "Testing $i..."
+    pushd "$i"
+    mv .meta/example.lua "$i.lua"
+    busted --verbose || RESULT=1
+    popd
+  fi
+done
+
+exit $RESULT

bin/test-all

@@ -2,7 +2,7 @@
 
 RESULT=0
 
-rm -r test-exercises
+rm -rf test-exercises
 cp -r exercises/practice test-exercises
 cd test-exercises || exit 1
 

exercises/practice/acronym/.meta/example.lua

@@ -1,6 +1,6 @@
 return function(s)
   local letters = {}
-  s:gsub('[A-Z]*[a-z]*', function(match)
+  s:gsub("[A-Z]*[a-z']*", function(match)
     table.insert(letters, match:sub(1, 1):upper())
   end)
   return table.concat(letters)

exercises/practice/acronym/.meta/spec_generator.lua

@@ -0,0 +1,11 @@
+return {
+  module_name = 'acronym',
+
+  generate_test = function(case)
+    local template = [[
+      local input = "%s"
+      local expected = '%s'
+      assert.equal(expected, acronym(input))]]
+    return template:format(case.input.phrase, case.expected)
+  end
+}

exercises/practice/acronym/acronym_spec.lua

@@ -1,27 +1,57 @@
 local acronym = require('acronym')
 
 describe('acronym', function()
-  it('should generate single-letter acronyms', function()
-    assert.equal('L', acronym('Lua'))
+  it('basic', function()
+    local input = "Portable Network Graphics"
+    local expected = 'PNG'
+    assert.equal(expected, acronym(input))
   end)
 
-  it('should generate multi-letter acronyms', function()
-    assert.equal('LUA', acronym('Lua Ultimate Acronym'))
+  it('lowercase words', function()
+    local input = "Ruby on Rails"
+    local expected = 'ROR'
+    assert.equal(expected, acronym(input))
   end)
 
-  it('should include lowercase words', function()
-    assert.equal('ROR', acronym('Ruby on Rails'))
+  it('punctuation', function()
+    local input = "First In, First Out"
+    local expected = 'FIFO'
+    assert.equal(expected, acronym(input))
   end)
 
-  it('should ignore punctuation', function()
-    assert.equal('FIFO', acronym('First In, First Out'))
+  it('all caps word', function()
+    local input = "GNU Image Manipulation Program"
+    local expected = 'GIMP'
+    assert.equal(expected, acronym(input))
   end)
 
-  it('should split words with internal capitalization', function()
-    assert.equal('HTML', acronym('HyperText Markup Language'))
+  it('punctuation without whitespace', function()
+    local input = "Complementary metal-oxide semiconductor"
+    local expected = 'CMOS'
+    assert.equal(expected, acronym(input))
   end)
 
-  it('should not split words that are all uppercase', function()
-    assert.equal('PHP', acronym('PHP: Hypertext Processor'))
+  it('very long abbreviation', function()
+    local input = "Rolling On The Floor Laughing So Hard That My Dogs Came Over And Licked Me"
+    local expected = 'ROTFLSHTMDCOALM'
+    assert.equal(expected, acronym(input))
+  end)
+
+  it('consecutive delimiters', function()
+    local input = "Something - I made up from thin air"
+    local expected = 'SIMUFTA'
+    assert.equal(expected, acronym(input))
+  end)
+
+  it('apostrophes', function()
+    local input = "Halley's Comet"
+    local expected = 'HC'
+    assert.equal(expected, acronym(input))
+  end)
+
+  it('underscore emphasis', function()
+    local input = "The Road _Not_ Taken"
+    local expected = 'TRNT'
+    assert.equal(expected, acronym(input))
   end)
 end)