1 files changed, 49 insertions, 0 deletions
diff --git a/Library/Homebrew/test/language_module_requirement_spec.rb b/Library/Homebrew/test/language_module_requirement_spec.rb
new file mode 100644
index 000000000..7f2666855
--- /dev/null
+++ b/Library/Homebrew/test/language_module_requirement_spec.rb
@@ -0,0 +1,49 @@
+require "requirements/language_module_requirement"
+
+describe LanguageModuleRequirement do
+  specify "unique dependencies are not equal" do
+    x = described_class.new(:node, "less")
+    y = described_class.new(:node, "coffee-script")
+    expect(x).not_to eq(y)
+    expect(x.hash).not_to eq(y.hash)
+  end
+
+  context "when module and import name differ" do
+    subject { described_class.new(:python, mod_name, import_name) }
+    let(:mod_name) { "foo" }
+    let(:import_name) { "bar" }
+
+    its(:message) { is_expected.to include(mod_name) }
+    its(:the_test) { is_expected.to include("import #{import_name}") }
+  end
+
+  context "when the language is Perl" do
+    it "does not satisfy invalid dependencies" do
+      expect(described_class.new(:perl, "notapackage")).not_to be_satisfied
+    end
+
+    it "satisfies valid dependencies" do
+      expect(described_class.new(:perl, "Env")).to be_satisfied
+    end
+  end
+
+  context "when the language is Python", :needs_python do
+    it "does not satisfy invalid dependencies" do
+      expect(described_class.new(:python, "notapackage")).not_to be_satisfied
+    end
+
+    it "satisfies valid dependencies" do
+      expect(described_class.new(:python, "datetime")).to be_satisfied
+    end
+  end
+
+  context "when the language is Ruby" do
+    it "does not satisfy invalid dependencies" do
+      expect(described_class.new(:ruby, "notapackage")).not_to be_satisfied
+    end
+
+    it "satisfies valid dependencies" do
+      expect(described_class.new(:ruby, "date")).to be_satisfied
+    end
+  end
+end