1 files changed, 69 insertions, 0 deletions
diff --git a/Library/Homebrew/test/test_formula_validation.rb b/Library/Homebrew/test/test_formula_validation.rb
new file mode 100644
index 000000000..be4c38c64
--- /dev/null
+++ b/Library/Homebrew/test/test_formula_validation.rb
@@ -0,0 +1,69 @@
+require 'testing_env'
+require 'formula'
+
+class FormulaValidationTests < Test::Unit::TestCase
+  def formula(*args, &block)
+    Class.new(Formula, &block).new(*args)
+  end
+
+  def assert_invalid(attr, &block)
+    e = assert_raises(FormulaValidationError, &block)
+    assert_equal attr, e.attr
+  end
+
+  def test_cant_override_brew
+    assert_raises(RuntimeError) do
+      Class.new(Formula) { def brew; end }
+    end
+  end
+
+  def test_validates_name
+    assert_invalid :name do
+      formula "name with spaces" do
+        url "foo"
+        version "1.0"
+      end
+    end
+  end
+
+  def test_validates_url
+    assert_invalid :url do
+      formula do
+        url ""
+        version "1"
+      end
+    end
+  end
+
+  def test_validates_version
+    assert_invalid :version do
+      formula do
+        url "foo"
+        version "version with spaces"
+      end
+    end
+
+    assert_invalid :version do
+      formula do
+        url "foo"
+        version ""
+      end
+    end
+  end
+
+  def test_validates_when_initialize_overridden
+    assert_invalid :name do
+      formula do
+        def initialize; end
+      end.brew {}
+    end
+  end
+
+  def test_head_only_valid
+    assert_nothing_raised do
+      formula do
+        head "foo"
+      end
+    end
+  end
+end