Added tests for Utils

Library/Homebrew/test/utils/git_spec.rb

@@ -21,9 +21,9 @@ describe Git do
   let(:file) { "lib/blah.rb" }
   let(:repo) { Pathname.new("repo") }
 
-  # after(:all) do
+  after(:all) do
-  #   FileUtils.rm_rf("repo")
+    FileUtils.rm_rf("repo")
-  # end
+  end
 
   describe "#last_revision_commit_of_file" do
     it "sets args as --skip=1 when before_commit is nil" do
@@ -61,6 +61,116 @@ describe Utils do
     it "returns git version if already set" do
       described_class.instance_variable_set(:@git, true)
       expect(described_class.git_available?).to be_truthy
+      described_class.instance_variable_set(:@git, nil)
+    end
+  end
+
+  describe "::git_path" do
+    context "when git is not available" do
+      before do
+        described_class.instance_variable_set(:@git, false)
+      end
+
+      it "returns" do
+        expect(described_class.git_path).to eq(nil)
+      end
+    end
+
+    context "when git is available" do
+      before do
+        described_class.instance_variable_set(:@git, true)
+      end
+
+      it "returns path of git" do
+        expect(described_class.git_path).to eq("/Applications/Xcode.app/Contents/Developer/usr/bin/git")
+      end
+
+      it "returns git_path if already set" do
+        described_class.instance_variable_set(:@git_path, "git")
+        expect(described_class.git_path).to eq("git")
+        described_class.instance_variable_set(:@git_path, nil)
+      end
+    end
+  end
+
+  describe "::git_version" do
+    context "when git is not available" do
+      before do
+        described_class.instance_variable_set(:@git, false)
+      end
+
+      it "returns" do
+        expect(described_class.git_path).to eq(nil)
+      end
+    end
+
+    context "when git is available" do
+      before do
+        described_class.instance_variable_set(:@git, true)
+      end
+
+      it "returns version of git" do
+        expect(described_class.git_version).not_to be_nil
+      end
+
+      it "returns git_version if already set" do
+        described_class.instance_variable_set(:@git_version, "v1")
+        expect(described_class.git_version).to eq("v1")
+        described_class.instance_variable_set(:@git_version, nil)
+      end
+    end
+  end
+
+  describe "::git_remote_exists" do
+    context "when git is not available" do
+      before do
+        described_class.instance_variable_set(:@git, false)
+      end
+
+      it "returns true" do
+        expect(described_class.git_remote_exists("blah")).to be_truthy
+      end
+    end
+
+    context "when git is available" do
+      before(:all) do
+        described_class.instance_variable_set(:@git, true)
+        git = HOMEBREW_SHIMS_PATH/"scm/git"
+        @repo = Pathname.new("hey")
+        FileUtils.mkpath("hey")
+        `cd #{@repo}`
+        `#{git} init`
+        `#{git} remote add origin git@github.com:Homebrew/brew`
+        `cd ..`
+      end
+
+      after(:all) do
+        FileUtils.rm_rf(@repo)
+      end
+
+      it "returns true when git remote exists" do
+        expect(described_class.git_remote_exists("git@github.com:Homebrew/brew")).to be_truthy
+      end
+
+      it "returns false when git remote does not exist" do
+        expect(described_class.git_remote_exists("blah")).to be_falsey
+      end
+    end
+  end
+
+  describe "::clear_git_available_cache" do
+    it "removes @git_path and @git_version if defined" do
+      described_class.clear_git_available_cache
+      expect(@git_path).to be_nil
+      expect(@git_version).to be_nil
+    end
+
+    it "removes @git if defined" do
+      described_class.instance_variable_set(:@git, true)
+      described_class.clear_git_available_cache
+      expect(@git).to be_nil
+      expect(@git_path).to be_nil
+      expect(@git_version).to be_nil
     end
   end
 end