add has release

deployment.go

@@ -0,0 +1,11 @@
+package gogobosh
+
+// HasRelease if deployment has release
+func (d *Deployment) HasRelease(name string) bool {
+	for _, release := range d.Releases {
+		if release.Name == name {
+			return true
+		}
+	}
+	return false
+}

deployment_test.go

@@ -0,0 +1,28 @@
+package gogobosh_test
+
+import (
+	. "github.com/cloudfoundry-community/gogobosh"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Deployment", func() {
+	Describe("Test Deployment", func() {
+
+		Describe("Test if release exist", func() {
+
+			It("see if release exist", func() {
+				deployment := &Deployment{
+					Releases: []Resource{
+						Resource{
+							Name: "test",
+						},
+					},
+				}
+				Expect(deployment.HasRelease("test")).Should(Equal(true))
+				Expect(deployment.HasRelease("bad")).Should(Equal(false))
+			})
+		})
+
+	})
+})