1 files changed, 94 insertions, 0 deletions
diff --git a/Library/Homebrew/test/formula_validation_spec.rb b/Library/Homebrew/test/formula_validation_spec.rb
new file mode 100644
index 000000000..ff50c86d1
--- /dev/null
+++ b/Library/Homebrew/test/formula_validation_spec.rb
@@ -0,0 +1,94 @@
+require "formula"
+
+describe Formula do
+  describe "::new" do
+    matcher :fail_with_invalid do |attr|
+      match do |actual|
+        expect {
+          begin
+            actual.call
+          rescue => e
+            expect(e.attr).to eq(attr)
+            raise e
+          end
+        }.to raise_error(FormulaValidationError)
+      end
+
+      def supports_block_expectations?
+        true
+      end
+    end
+
+    it "cant override the `brew` method" do
+      expect {
+        formula do
+          def brew; end
+        end
+      }.to raise_error(RuntimeError, /You cannot override Formula#brew/)
+    end
+
+    it "validates the `name`" do
+      expect {
+        formula "name with spaces" do
+          url "foo"
+          version "1.0"
+        end
+      }.to fail_with_invalid :name
+    end
+
+    it "validates the `url`" do
+      expect {
+        formula do
+          url ""
+          version "1"
+        end
+      }.to fail_with_invalid :url
+    end
+
+    it "validates the `version`" do
+      expect {
+        formula do
+          url "foo"
+          version "version with spaces"
+        end
+      }.to fail_with_invalid :version
+
+      expect {
+        formula do
+          url "foo"
+          version ""
+        end
+      }.to fail_with_invalid :version
+
+      expect {
+        formula do
+          url "foo"
+          version nil
+        end
+      }.to fail_with_invalid :version
+    end
+
+    specify "devel-only is valid" do
+      f = formula do
+        devel do
+          url "foo"
+          version "1.0"
+        end
+      end
+
+      expect(f).to be_devel
+    end
+
+    specify "head-only is valid" do
+      f = formula do
+        head "foo"
+      end
+
+      expect(f).to be_head
+    end
+
+    it "fails when Formula is empty" do
+      expect { formula {} }.to raise_error(FormulaSpecificationError)
+    end
+  end
+end