Convert `ARGV` test to spec.

2 files changed, 149 insertions, 79 deletions

diff --git a/Library/Homebrew/test/ARGV_spec.rb b/Library/Homebrew/test/ARGV_spec.rb
new file mode 100644
index 000000000..bcb7c3f70
--- /dev/null
+++ b/Library/Homebrew/test/ARGV_spec.rb
@@ -0,0 +1,149 @@
+require "extend/ARGV"
+
+describe HomebrewArgvExtension do
+  subject { argv.extend(HomebrewArgvExtension) }
+  let(:argv) { ["mxcl"] }
+
+  describe "#formulae" do
+    it "raises an error when a Formula is unavailable" do
+      expect { subject.formulae }.to raise_error FormulaUnavailableError
+    end
+
+    context "when there are no Formulae" do
+      let(:argv) { [] }
+
+      it "returns an empty array" do
+        expect(subject.formulae).to be_empty
+      end
+    end
+  end
+
+  describe "#casks" do
+    it "returns an empty array if there is no match" do
+      expect(subject.casks).to eq []
+    end
+  end
+
+  describe "#kegs" do
+    context "when there are matching Kegs" do
+      before(:each) do
+        keg = HOMEBREW_CELLAR + "mxcl/10.0"
+        keg.mkpath
+      end
+
+      it "returns an array of Kegs" do
+        expect(subject.kegs.length).to eq 1
+      end
+    end
+
+    context "when there are no matching Kegs" do
+      let(:argv) { [] }
+
+      it "returns an empty array" do
+        expect(subject.kegs).to be_empty
+      end
+    end
+  end
+
+  describe "#named" do
+    let(:argv) { ["foo", "--debug", "-v"] }
+
+    it "returns an array of non-option arguments" do
+      expect(subject.named).to eq ["foo"]
+    end
+
+    context "when there are no named arguments" do
+      let(:argv) { [] }
+
+      it "returns an empty array" do
+        expect(subject.named).to be_empty
+      end
+    end
+  end
+
+  describe "#options_only" do
+    let(:argv) { ["--foo", "-vds", "a", "b", "cdefg"] }
+
+    it "returns an array of option arguments" do
+      expect(subject.options_only).to eq ["--foo", "-vds"]
+    end
+  end
+
+  describe "#flags_only" do
+    let(:argv) { ["--foo", "-vds", "a", "b", "cdefg"] }
+
+    it "returns an array of flags" do
+      expect(subject.flags_only).to eq ["--foo"]
+    end
+  end
+
+  describe "#empty?" do
+    let(:argv) { [] }
+
+    it "returns true if it is empty" do
+      expect(subject).to be_empty
+    end
+  end
+
+  describe "#switch?" do
+    let(:argv) { ["-ns", "-i", "--bar", "-a-bad-arg"] }
+
+    it "returns true if the given string is a switch" do
+      %w[n s i].each do |s|
+        expect(subject.switch?(s)).to be true
+      end
+    end
+
+    it "returns false if the given string is not a switch" do
+      %w[b ns bar --bar -n a bad arg].each do |s|
+        expect(subject.switch?(s)).to be false
+      end
+    end
+  end
+
+  describe "#flag?" do
+    let(:argv) { ["--foo", "-bq", "--bar"] }
+
+    it "returns true if the given string is a flag" do
+      expect(subject.flag?("--foo")).to eq true
+      expect(subject.flag?("--bar")).to eq true
+    end
+
+    it "returns true if there is a switch with the same initial character" do
+      expect(subject.flag?("--baz")).to eq true
+      expect(subject.flag?("--qux")).to eq true
+    end
+
+    it "returns false if there is no matching flag" do
+      expect(subject.flag?("--frotz")).to eq false
+      expect(subject.flag?("--debug")).to eq false
+    end
+  end
+
+  describe "#value" do
+    let(:argv) { ["--foo=", "--bar=ab"] }
+
+    it "returns the value for a given string" do
+      expect(subject.value("foo")).to eq ""
+      expect(subject.value("bar")).to eq "ab"
+    end
+
+    it "returns nil if there is no matching argument" do
+      expect(subject.value("baz")).to be nil
+    end
+  end
+
+  describe "#values" do
+    let(:argv) { ["--foo=", "--bar=a", "--baz=b,c"] }
+
+    it "returns the value for a given argument" do
+      expect(subject.values("foo")).to eq []
+      expect(subject.values("bar")).to eq ["a"]
+      expect(subject.values("baz")).to eq ["b", "c"]
+    end
+
+    it "returns nil if there is no matching argument" do
+      expect(subject.values("qux")).to be nil
+    end
+  end
+end
diff --git a/Library/Homebrew/test/ARGV_test.rb b/Library/Homebrew/test/ARGV_test.rb
deleted file mode 100644
index e93d09c39..000000000
--- a/Library/Homebrew/test/ARGV_test.rb
+++ /dev/null
@@ -1,79 +0,0 @@
-require "testing_env"
-require "extend/ARGV"
-
-class ArgvExtensionTests < Homebrew::TestCase
-  def setup
-    super
-    @argv = [].extend(HomebrewArgvExtension)
-  end
-
-  def test_argv_formulae
-    @argv.unshift "mxcl"
-    assert_raises(FormulaUnavailableError) { @argv.formulae }
-  end
-
-  def test_argv_casks
-    @argv.unshift "mxcl"
-    assert_equal [], @argv.casks
-  end
-
-  def test_argv_kegs
-    keg = HOMEBREW_CELLAR + "mxcl/10.0"
-    keg.mkpath
-    @argv << "mxcl"
-    assert_equal 1, @argv.kegs.length
-  end
-
-  def test_argv_named
-    @argv << "foo" << "--debug" << "-v"
-    assert_equal %w[foo], @argv.named
-  end
-
-  def test_options_only
-    @argv << "--foo" << "-vds" << "a" << "b" << "cdefg"
-    assert_equal %w[--foo -vds], @argv.options_only
-  end
-
-  def test_flags_only
-    @argv << "--foo" << "-vds" << "a" << "b" << "cdefg"
-    assert_equal %w[--foo], @argv.flags_only
-  end
-
-  def test_empty_argv
-    assert_empty @argv.named
-    assert_empty @argv.kegs
-    assert_empty @argv.formulae
-    assert_empty @argv
-  end
-
-  def test_switch?
-    @argv << "-ns" << "-i" << "--bar" << "-a-bad-arg"
-    %w[n s i].each { |s| assert @argv.switch?(s) }
-    %w[b ns bar --bar -n a bad arg].each { |s| assert !@argv.switch?(s) }
-  end
-
-  def test_flag?
-    @argv << "--foo" << "-bq" << "--bar"
-    assert @argv.flag?("--foo")
-    assert @argv.flag?("--bar")
-    assert @argv.flag?("--baz")
-    assert @argv.flag?("--qux")
-    assert !@argv.flag?("--frotz")
-    assert !@argv.flag?("--debug")
-  end
-
-  def test_value
-    @argv << "--foo=" << "--bar=ab"
-    assert_equal "", @argv.value("foo")
-    assert_equal "ab", @argv.value("bar")
-    assert_nil @argv.value("baz")
-  end
-
-  def test_values
-    @argv << "--foo=" << "--bar=a" << "--baz=b,c"
-    assert_equal [], @argv.values("foo")
-    assert_equal ["a"], @argv.values("bar")
-    assert_equal ["b", "c"], @argv.values("baz")
-    assert_nil @argv.values("qux")
-  end
-end