2 files changed, 126 insertions, 0 deletions
diff --git a/Library/Homebrew/test/formatter_spec.rb b/Library/Homebrew/test/formatter_spec.rb
new file mode 100644
index 000000000..e8bd34416
--- /dev/null
+++ b/Library/Homebrew/test/formatter_spec.rb
@@ -0,0 +1,55 @@
+require "utils/formatter"
+require "utils/tty"
+
+describe Formatter do
+  describe "::columns" do
+    let(:input) {
+      [
+        "aa",
+        "bbb",
+        "ccc",
+        "dd",
+      ]
+    }
+    subject { described_class.columns(input) }
+
+    it "doesn't output columns if $stdout is not a TTY." do
+      allow_any_instance_of(IO).to receive(:tty?).and_return(false)
+      allow(Tty).to receive(:width).and_return(10)
+
+      expect(subject).to eq(
+        "aa\n" \
+        "bbb\n" \
+        "ccc\n" \
+        "dd\n",
+      )
+    end
+
+    describe "$stdout is a TTY" do
+      it "outputs columns" do
+        allow_any_instance_of(IO).to receive(:tty?).and_return(true)
+        allow(Tty).to receive(:width).and_return(10)
+
+        expect(subject).to eq(
+          "aa    ccc\n" \
+          "bbb   dd\n",
+        )
+      end
+
+      it "outputs only one line if everything fits" do
+        allow_any_instance_of(IO).to receive(:tty?).and_return(true)
+        allow(Tty).to receive(:width).and_return(20)
+
+        expect(subject).to eq(
+          "aa   bbb  ccc  dd\n",
+        )
+      end
+    end
+
+    describe "with empty input" do
+      let(:input) { [] }
+
+      it { is_expected.to eq("\n") }
+    end
+  end
+end
diff --git a/Library/Homebrew/test/locale_spec.rb b/Library/Homebrew/test/locale_spec.rb
new file mode 100644
index 000000000..9e4d09e83
--- /dev/null
+++ b/Library/Homebrew/test/locale_spec.rb
@@ -0,0 +1,71 @@
+require "locale"
+
+describe Locale do
+  describe "::parse" do
+    it "parses a string in the correct format" do
+      expect(described_class.parse("zh")).to eql(described_class.new("zh", nil, nil))
+      expect(described_class.parse("zh-CN")).to eql(described_class.new("zh", "CN", nil))
+      expect(described_class.parse("zh-Hans")).to eql(described_class.new("zh", nil, "Hans"))
+      expect(described_class.parse("zh-CN-Hans")).to eql(described_class.new("zh", "CN", "Hans"))
+    end
+
+    context "raises a ParserError when given" do
+      it "an empty string" do
+        expect { described_class.parse("") }.to raise_error(Locale::ParserError)
+      end
+
+      it "a string in a wrong format" do
+        expect { described_class.parse("zh_CN_Hans") }.to raise_error(Locale::ParserError)
+        expect { described_class.parse("zhCNHans") }.to raise_error(Locale::ParserError)
+        expect { described_class.parse("zh-CN_Hans") }.to raise_error(Locale::ParserError)
+        expect { described_class.parse("zhCN") }.to raise_error(Locale::ParserError)
+        expect { described_class.parse("zh_Hans") }.to raise_error(Locale::ParserError)
+      end
+    end
+  end
+
+  describe "::new" do
+    it "raises an ArgumentError when all arguments are nil" do
+      expect { described_class.new(nil, nil, nil) }.to raise_error(ArgumentError)
+    end
+
+    it "raises a ParserError when one of the arguments does not match the locale format" do
+      expect { described_class.new("ZH", nil, nil) }.to raise_error(Locale::ParserError)
+      expect { described_class.new(nil, "cn", nil) }.to raise_error(Locale::ParserError)
+      expect { described_class.new(nil, nil, "hans") }.to raise_error(Locale::ParserError)
+    end
+  end
+
+  describe "#include?" do
+    subject { described_class.new("zh", "CN", "Hans") }
+
+    it { is_expected.to include("zh") }
+    it { is_expected.to include("zh-CN") }
+    it { is_expected.to include("CN") }
+    it { is_expected.to include("CN-Hans") }
+    it { is_expected.to include("Hans") }
+    it { is_expected.to include("zh-CN-Hans") }
+  end
+
+  describe "#eql?" do
+    subject { described_class.new("zh", "CN", "Hans") }
+
+    context "all parts match" do
+      it { is_expected.to eql("zh-CN-Hans") }
+      it { is_expected.to eql(subject) }
+    end
+
+    context "only some parts match" do
+      it { is_expected.to_not eql("zh") }
+      it { is_expected.to_not eql("zh-CN") }
+      it { is_expected.to_not eql("CN") }
+      it { is_expected.to_not eql("CN-Hans") }
+      it { is_expected.to_not eql("Hans") }
+    end
+
+    it "does not raise if 'other' cannot be parsed" do
+      expect { subject.eql?("zh_CN_Hans") }.not_to raise_error
+      expect(subject.eql?("zh_CN_Hans")).to be false
+    end
+  end
+end