1 files changed, 48 insertions, 0 deletions
diff --git a/Library/Homebrew/test/test_formula_pin.rb b/Library/Homebrew/test/test_formula_pin.rb
new file mode 100644
index 000000000..938fd51f8
--- /dev/null
+++ b/Library/Homebrew/test/test_formula_pin.rb
@@ -0,0 +1,48 @@
+require 'testing_env'
+require 'formula_pin'
+
+class FormulaPinTests < Test::Unit::TestCase
+  class FormulaDouble
+    def name
+      "double"
+    end
+
+    def rack
+      Pathname.new("#{HOMEBREW_CELLAR}/#{name}")
+    end
+  end
+
+  def setup
+    @f   = FormulaDouble.new
+    @pin = FormulaPin.new(@f)
+    @f.rack.mkpath
+  end
+
+  def test_not_pinnable
+    assert !@pin.pinnable?
+  end
+
+  def test_pinnable_if_kegs_exist
+    (@f.rack+'0.1').mkpath
+    assert @pin.pinnable?
+  end
+
+  def test_pin
+    (@f.rack+'0.1').mkpath
+    @pin.pin
+    assert @pin.pinned?
+    assert_equal 1, FormulaPin::PINDIR.children.length
+  end
+
+  def test_unpin
+    (@f.rack+'0.1').mkpath
+    @pin.pin
+    @pin.unpin
+    assert !@pin.pinned?
+    assert_equal 0, FormulaPin::PINDIR.children.length
+  end
+
+  def teardown
+    @f.rack.rmtree
+  end
+end