Add additional spec generators (#638)

Author: ryanplusplus

exercises/practice/leap/.meta/spec_generator.lua

@@ -0,0 +1,9 @@
+return {
+  module_name = 'is_leap_year',
+
+  generate_test = function(case)
+    local template = [[
+      assert.is_%s(is_leap_year(%d))]]
+    return template:format(case.expected, case.input.year)
+  end
+}

exercises/practice/leap/leap_spec.lua

@@ -1,23 +1,23 @@
 local is_leap_year = require('leap')
 
 describe('leap', function()
-  it('year not divisible by 4 is common year', function()
+  it('year not divisible by 4 in common year', function()
     assert.is_false(is_leap_year(2015))
   end)
 
-  it('year divisible by 2, not divisible by 4 is common year', function()
+  it('year divisible by 2, not divisible by 4 in common year', function()
     assert.is_false(is_leap_year(1970))
   end)
 
-  it('year divisible by 4, not divisible by 100 is leap year', function()
+  it('year divisible by 4, not divisible by 100 in leap year', function()
     assert.is_true(is_leap_year(1996))
   end)
 
   it('year divisible by 4 and 5 is still a leap year', function()
     assert.is_true(is_leap_year(1960))
   end)
 
-  it('year divisible by 100, not divisible by 400 is common year', function()
+  it('year divisible by 100, not divisible by 400 in common year', function()
     assert.is_false(is_leap_year(2100))
   end)
 
@@ -33,7 +33,7 @@ describe('leap', function()
     assert.is_true(is_leap_year(2400))
   end)
 
-  it('year divisible by 200, not divisible by 400 is common year', function()
+  it('year divisible by 200, not divisible by 400 in common year', function()
     assert.is_false(is_leap_year(1800))
   end)
 end)

exercises/practice/raindrops/.meta/spec_generator.lua

@@ -0,0 +1,9 @@
+return {
+  module_name = 'raindrops',
+
+  generate_test = function(case)
+    local template = [[
+      assert.equal('%s', raindrops(%d))]]
+    return template:format(case.expected, case.input.number)
+  end
+}

exercises/practice/raindrops/raindrops_spec.lua

@@ -5,71 +5,71 @@ describe('raindrops', function()
     assert.equal('1', raindrops(1))
   end)
 
-  it('the sound for 3 is Pling', function()
+  it('the sound for 3 is pling', function()
     assert.equal('Pling', raindrops(3))
   end)
 
-  it('the sound for 5 is Plang', function()
+  it('the sound for 5 is plang', function()
     assert.equal('Plang', raindrops(5))
   end)
 
-  it('the sound for 7 is Plong', function()
+  it('the sound for 7 is plong', function()
     assert.equal('Plong', raindrops(7))
   end)
 
-  it('the sound for 6 is Pling as it has a factor 3', function()
+  it('the sound for 6 is pling as it has a factor 3', function()
     assert.equal('Pling', raindrops(6))
   end)
 
   it('2 to the power 3 does not make a raindrop sound as 3 is the exponent not the base', function()
     assert.equal('8', raindrops(8))
   end)
 
-  it('the sound for 9 is Pling as it has a factor 3', function()
+  it('the sound for 9 is pling as it has a factor 3', function()
     assert.equal('Pling', raindrops(9))
   end)
 
-  it('the sound for 10 is Plang as it has a factor 5', function()
+  it('the sound for 10 is plang as it has a factor 5', function()
     assert.equal('Plang', raindrops(10))
   end)
 
-  it('the sound for 14 is Plong as it has a factor 7', function()
+  it('the sound for 14 is plong as it has a factor of 7', function()
     assert.equal('Plong', raindrops(14))
   end)
 
-  it('the sound for 15 is PlingPlang as it has a factor 3 and 5', function()
+  it('the sound for 15 is plingplang as it has factors 3 and 5', function()
     assert.equal('PlingPlang', raindrops(15))
   end)
 
-  it('the sound for 21 is PlingPlong as it has factors 3 and 7', function()
+  it('the sound for 21 is plingplong as it has factors 3 and 7', function()
     assert.equal('PlingPlong', raindrops(21))
   end)
 
-  it('the sound for 25 is Plang as it has a factor 5', function()
+  it('the sound for 25 is plang as it has a factor 5', function()
     assert.equal('Plang', raindrops(25))
   end)
 
-  it('the sound for 27 is Pling as it has a factor 3', function()
+  it('the sound for 27 is pling as it has a factor 3', function()
     assert.equal('Pling', raindrops(27))
   end)
 
-  it('the sound for 35 is PlangPlong as it has factors 5 and 7', function()
+  it('the sound for 35 is plangplong as it has factors 5 and 7', function()
     assert.equal('PlangPlong', raindrops(35))
   end)
 
-  it('the sound for 49 is Plong as it has a factor 7', function()
+  it('the sound for 49 is plong as it has a factor 7', function()
     assert.equal('Plong', raindrops(49))
   end)
 
   it('the sound for 52 is 52', function()
     assert.equal('52', raindrops(52))
   end)
 
-  it('the sound for 105 is PlingPlangPlong as it has factors 3, 5 and 7', function()
+  it('the sound for 105 is plingplangplong as it has factors 3, 5 and 7', function()
     assert.equal('PlingPlangPlong', raindrops(105))
   end)
 
-  it('the sound for 3125 is Plang as it has a factor 5', function()
+  it('the sound for 3125 is plang as it has a factor 5', function()
     assert.equal('Plang', raindrops(3125))
   end)
 end)

exercises/practice/resistor-color/.meta/example.lua

@@ -1,18 +1,26 @@
-local value = {
-  black = 0,
-  brown = 1,
-  red = 2,
-  orange = 3,
-  yellow = 4,
-  green = 5,
-  blue = 6,
-  violet = 7,
-  grey = 8,
-  white = 9
+local colors = {
+  'black', --
+  'brown', --
+  'red', --
+  'orange', --
+  'yellow', --
+  'green', --
+  'blue', --
+  'violet', --
+  'grey', --
+  'white'
 }
 
 return {
+  colors = function()
+    return colors
+  end,
+
   color_code = function(color)
-    return value[color]
+    for i, v in ipairs(colors) do
+      if v == color then
+        return i - 1
+      end
+    end
   end
 }

exercises/practice/resistor-color/.meta/spec_generator.lua

@@ -0,0 +1,29 @@
+local map = function(t, f)
+  local mapped = {}
+  for i, v in ipairs(t) do
+    mapped[i] = f(v)
+  end
+  return mapped
+end
+
+local function render_table(t)
+  return table.concat(map(t, function(element)
+    return "'" .. element .. "'"
+  end), ', --\n')
+end
+
+return {
+  module_name = 'rc',
+
+  generate_test = function(case)
+    if case.property == 'colors' then
+      local template = [[
+        assert.same({ %s }, rc.colors())]]
+      return template:format(render_table(case.expected))
+    else
+      local template = [[
+        assert.equal(%d, rc.color_code('%s'))]]
+      return template:format(case.expected, case.input.color)
+    end
+  end
+}

exercises/practice/resistor-color/.meta/tests.toml

@@ -20,4 +20,3 @@ description = "Color codes -> Orange"
 
 [581d68fa-f968-4be2-9f9d-880f2fb73cf7]
 description = "Colors"
-include = false

exercises/practice/resistor-color/resistor-color_spec.lua

@@ -1,43 +1,32 @@
-local rc = require 'resistor-color'
+local rc = require('resistor-color')
 
 describe('resistor-color', function()
-  it('Black', function()
-    assert.equal(0, rc.color_code('black'))
-  end)
-
-  it('Brown', function()
-    assert.equal(1, rc.color_code('brown'))
-  end)
-
-  it('Red', function()
-    assert.equal(2, rc.color_code('red'))
-  end)
-
-  it('Orange', function()
-    assert.equal(3, rc.color_code('orange'))
-  end)
-
-  it('Yellow', function()
-    assert.equal(4, rc.color_code('yellow'))
-  end)
-
-  it('Green', function()
-    assert.equal(5, rc.color_code('green'))
-  end)
-
-  it('Blue', function()
-    assert.equal(6, rc.color_code('blue'))
-  end)
-
-  it('Violet', function()
-    assert.equal(7, rc.color_code('violet'))
-  end)
-
-  it('Grey', function()
-    assert.equal(8, rc.color_code('grey'))
-  end)
-
-  it('White', function()
-    assert.equal(9, rc.color_code('white'))
+  describe('color codes', function()
+    it('black', function()
+      assert.equal(0, rc.color_code('black'))
+    end)
+
+    it('white', function()
+      assert.equal(9, rc.color_code('white'))
+    end)
+
+    it('orange', function()
+      assert.equal(3, rc.color_code('orange'))
+    end)
+  end)
+
+  it('colors', function()
+    assert.same({
+      'black', --
+      'brown', --
+      'red', --
+      'orange', --
+      'yellow', --
+      'green', --
+      'blue', --
+      'violet', --
+      'grey', --
+      'white'
+    }, rc.colors())
   end)
 end)