Add tests for language/python

Library/Homebrew/test/language/python_spec.rb

@@ -1,6 +1,35 @@
 require "language/python"
 require "resource"
 
+describe Language::Python, :needs_python do
+  describe "#major_minor_version" do
+    it "returns a Version for Python 2" do
+      expect(subject).to receive(:major_minor_version).and_return(Version)
+      subject.major_minor_version("python")
+    end
+  end
+
+  describe "#site_packages" do
+    it "gives a different location between PyPy and Python 2" do
+      expect(subject.site_packages("python")).not_to eql(subject.site_packages("pypy"))
+    end
+  end
+
+  describe "#homebrew_site_packages" do
+    it "returns the Homebrew site packages location" do
+      expect(subject).to receive(:site_packages).and_return(Pathname)
+      subject.site_packages("python")
+    end
+  end
+
+  describe "#user_site_packages" do
+    it "can determine user site packages location" do
+      expect(subject).to receive(:user_site_packages).and_return(Pathname)
+      subject.user_site_packages("python")
+    end
+  end
+end
+
 describe Language::Python::Virtualenv::Virtualenv do
   subject { described_class.new(formula, dir, "python") }