unit-test rate limit behavior

github_test.go

@@ -76,4 +76,76 @@ var _ = Describe("GitHub Client", func() {
 			Ω(err).ShouldNot(HaveOccurred())
 		})
 	})
+
+	Describe("GetRelease", func() {
+		BeforeEach(func() {
+			source = Source{
+				User:       "concourse",
+				Repository: "concourse",
+			}
+		})
+		Context("When GitHub's rate limit has been exceeded", func() {
+			BeforeEach(func() {
+				rateLimitResponse := `{
+          "message": "API rate limit exceeded for 127.0.0.1. (But here's the good news: Authenticated requests get a higher rate limit. Check out the documentation for more details.)",
+          "documentation_url": "https://developer.github.com/v3/#rate-limiting"
+        }`
+
+				rateLimitHeaders := http.Header(map[string][]string{
+					"X-RateLimit-Limit": {"60"},
+					"X-RateLimit-Remaining": {"0"},
+					"X-RateLimit-Reset": {"1377013266"},
+				})
+
+				server.AppendHandlers(
+					ghttp.CombineHandlers(
+						ghttp.VerifyRequest("GET", "/repos/concourse/concourse/releases/20"),
+						ghttp.RespondWith(403, rateLimitResponse, rateLimitHeaders),
+					),
+				)
+			})
+
+			It("Returns an appropriate error", func() {
+				_, err := client.GetRelease(20)
+				Expect(err).ToNot(BeNil())
+				Expect(err.Error()).To(ContainSubstring("API rate limit exceeded for 127.0.0.1. (But here's the good news: Authenticated requests get a higher rate limit. Check out the documentation for more details.)"))
+			})
+		})
+	})
+
+	Describe("GetReleaseByTag", func() {
+		BeforeEach(func() {
+			source = Source{
+				User:       "concourse",
+				Repository: "concourse",
+			}
+		})
+		Context("When GitHub's rate limit has been exceeded", func() {
+			BeforeEach(func() {
+				rateLimitResponse := `{
+          "message": "API rate limit exceeded for 127.0.0.1. (But here's the good news: Authenticated requests get a higher rate limit. Check out the documentation for more details.)",
+          "documentation_url": "https://developer.github.com/v3/#rate-limiting"
+        }`
+
+				rateLimitHeaders := http.Header(map[string][]string{
+					"X-RateLimit-Limit": {"60"},
+					"X-RateLimit-Remaining": {"0"},
+					"X-RateLimit-Reset": {"1377013266"},
+				})
+
+				server.AppendHandlers(
+					ghttp.CombineHandlers(
+						ghttp.VerifyRequest("GET", "/repos/concourse/concourse/releases/tags/some-tag"),
+						ghttp.RespondWith(403, rateLimitResponse, rateLimitHeaders),
+					),
+				)
+			})
+
+			It("Returns an appropriate error", func() {
+				_, err := client.GetReleaseByTag("some-tag")
+				Expect(err).ToNot(BeNil())
+				Expect(err.Error()).To(ContainSubstring("API rate limit exceeded for 127.0.0.1. (But here's the good news: Authenticated requests get a higher rate limit. Check out the documentation for more details.)"))
+			})
+		})
+	})
 })