Test for #275

Signed-off-by: Vishal Rana <vr@labstack.com>

.travis.yml

@@ -12,7 +12,7 @@ env:
 
 before_install:
   - export PATH=$PATH:$GOPATH/bin
-  - go get golang.org/x/tools/cmd/vet
+  # - go get golang.org/x/tools/cmd/vet
   - go get golang.org/x/tools/cmd/cover
   - go get github.com/modocache/gover
   - go get github.com/mattn/goveralls

response_test.go

@@ -64,3 +64,27 @@ func TestResponse(t *testing.T) {
 	// reset
 	r.reset(httptest.NewRecorder(), New())
 }
+
+func TestResponseWriteCommit(t *testing.T) {
+	e := New()
+	w := httptest.NewRecorder()
+	r := NewResponse(w, e)
+
+	// Write body, it writes header if not committed yet
+	s := "echo"
+	r.Write([]byte(s))
+
+	assert.Equal(t, w.Code, 200)
+	assert.Equal(t, w.Body.String(), s)
+
+	assert.Equal(t, r.Status(), 200)
+	assert.Equal(t, r.Size(), int64(4))
+	assert.True(t, r.Committed())
+
+	// This is ignored with warning
+	r.WriteHeader(400)
+
+	assert.Equal(t, r.Status(), 200)
+	assert.Equal(t, r.Size(), int64(4))
+	assert.True(t, r.Committed())
+}