more unit tests

Closes Homebrew/homebrew#42096.

Signed-off-by: Baptiste Fontaine <batifon@yahoo.fr>

Library/Homebrew/test/test_caveats.rb

+require 'testing_env'
+
+class CaveatsTests < Homebrew::TestCase
+  def setup
+    @f = formula { url "foo-1.0" }
+    @c = Caveats.new @f
+  end
+
+  def test_f
+    assert_equal @f, @c.f
+  end
+
+  def test_empty?
+    assert @c.empty?
+
+    f = formula do
+      url "foo-1.0"
+
+      def caveats
+        "something"
+      end
+    end
+    c = Caveats.new f
+
+    refute c.empty?
+  end
+end

Library/Homebrew/test/test_dependencies.rb

@@ -71,6 +71,20 @@ class DependenciesTests < Homebrew::TestCase
     refute_equal a, b
     refute_eql a, b
   end
+
+  def test_empty
+    a = Dependencies.new
+    assert a.empty?
+    a << Dependency.new("foo")
+    refute a.empty?
+  end
+
+  def test_inspect
+    a = Dependencies.new
+    assert_equal "#<Dependencies: []>", a.inspect
+    a << Dependency.new("foo")
+    assert_equal "#<Dependencies: [#<Dependency: \"foo\" []>]>", a.inspect
+  end
 end
 
 class RequirementsTests < Homebrew::TestCase

Library/Homebrew/test/test_formula.rb

@@ -257,4 +257,28 @@ class FormulaTests < Homebrew::TestCase
     assert f.option_defined?("bar")
     assert f.option_defined?("baz")
   end
+
+  def test_desc
+    f = formula do
+      desc "a formula"
+      url "foo-1.0"
+    end
+
+    assert_equal "a formula", f.desc
+  end
+
+  def test_post_install_defined
+    f1 = formula do
+      url "foo-1.0"
+
+      def post_install;end
+    end
+
+    f2 = formula do
+      url "foo-1.0"
+    end
+
+    assert f1.post_install_defined?
+    refute f2.post_install_defined?
+  end
 end

Library/Homebrew/test/test_options.rb

@@ -23,6 +23,10 @@ class OptionTests < Homebrew::TestCase
     assert_empty @option.description
     assert_equal "foo", Option.new("foo", "foo").description
   end
+
+  def test_inspect
+    assert_equal "#<Option: \"--foo\">", @option.inspect
+  end
 end
 
 class DeprecatedOptionTests < Homebrew::TestCase
@@ -121,10 +125,21 @@ class OptionsTests < Homebrew::TestCase
     assert_equal [foo, bar, baz].sort, (@options | options).sort
   end
 
+  def test_times
+    @options << Option.new("aa") << Option.new("bb") << Option.new("cc")
+    assert_equal %w[--aa --bb --cc], (@options * "XX").split("XX").sort
+  end
+
   def test_create_with_array
     array = %w{--foo --bar}
     option1 = Option.new("foo")
     option2 = Option.new("bar")
     assert_equal [option1, option2].sort, Options.create(array).sort
   end
+
+  def test_inspect
+    assert_equal "#<Options: []>", @options.inspect
+    @options << Option.new("foo")
+    assert_equal "#<Options: [#<Option: \"--foo\">]>", @options.inspect
+  end
 end

Library/Homebrew/test/test_version_subclasses.rb

@@ -44,4 +44,10 @@ class MacOSVersionTests < Homebrew::TestCase
     assert_equal @v, MacOS::Version.from_symbol(:lion)
     assert_raises(ArgumentError) { MacOS::Version.from_symbol(:foo) }
   end
+
+  def test_pretty_name
+    assert_equal "El Capitan", MacOS::Version.new("10.11").pretty_name
+    assert_equal "Mountain Lion", MacOS::Version.new("10.8").pretty_name
+    assert_equal "Yosemite", MacOS::Version.new("10.10").pretty_name
+  end
 end