Test the result of the automated commit

This factors out the function that checks directories for equivalence,
and uses it to check that the upstream repo has the expected update
when the controller has pushed its commit.

controllers/testdata/appconfig-expected/deploy.yaml

@@ -0,0 +1,10 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test
+spec:
+  template:
+    spec:
+      containers:
+      - name: helll
+        image: helloworld:1.0.1

controllers/update_test.go

@@ -39,6 +39,7 @@ import (
 
 	sourcev1alpha1 "github.com/fluxcd/source-controller/api/v1alpha1"
 	imagev1alpha1 "github.com/squaremo/image-automation-controller/api/v1alpha1"
+	"github.com/squaremo/image-automation-controller/pkg/test"
 	imagev1alpha1_reflect "github.com/squaremo/image-reflector-controller/api/v1alpha1"
 )
 
@@ -197,6 +198,16 @@ var _ = Describe("ImageUpdateAutomation", func() {
 			commit, err := localRepo.CommitObject(head.Hash())
 			Expect(err).ToNot(HaveOccurred())
 			Expect(commit.Message).To(Equal(commitMessage))
+
+			tmp, err := ioutil.TempDir("", "gotest-imageauto")
+			Expect(err).ToNot(HaveOccurred())
+			defer os.RemoveAll(tmp)
+
+			_, err = git.PlainClone(tmp, false, &git.CloneOptions{
+				URL: repoURL,
+			})
+			Expect(err).ToNot(HaveOccurred())
+			test.ExpectMatchingDirectories(tmp, "testdata/appconfig-expected")
 		})
 	})
 })

pkg/test/files.go

@@ -0,0 +1,67 @@
+/*
+Copyright 2020 Michael Bridgen <mikeb@squaremobius.net>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package test
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strings"
+
+	. "github.com/onsi/gomega"
+)
+
+// TODO rewrite this as just doing the diff, so I can test that it
+// fails at the right times too.
+func ExpectMatchingDirectories(actualRoot, expectedRoot string) {
+	Expect(actualRoot).To(BeADirectory())
+	filepath.Walk(expectedRoot, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return nil
+		}
+		// ignore emacs backups
+		if strings.HasSuffix(path, "~") {
+			return nil
+		}
+		relPath := path[len(expectedRoot):]
+		actualPath := filepath.Join(actualRoot, relPath)
+		if info.IsDir() {
+			if strings.HasPrefix(filepath.Base(path), ".") {
+				return filepath.SkipDir
+			}
+			Expect(actualPath).To(BeADirectory())
+			return nil
+		}
+		Expect(actualPath).To(BeARegularFile())
+		actualBytes, err := ioutil.ReadFile(actualPath)
+		expectedBytes, err := ioutil.ReadFile(path)
+		Expect(string(actualBytes)).To(Equal(string(expectedBytes)))
+		return nil
+	})
+	filepath.Walk(actualRoot, func(path string, info os.FileInfo, err error) error {
+		p := path[len(actualRoot):]
+		// ignore emacs backups
+		if strings.HasSuffix(p, "~") {
+			return nil
+		}
+		if info.IsDir() && strings.HasPrefix(filepath.Base(p), ".") {
+			return filepath.SkipDir
+		}
+		Expect(filepath.Join(expectedRoot, p)).To(BeAnExistingFile())
+		return nil
+	})
+}

pkg/test/files_test.go

@@ -0,0 +1,38 @@
+/*
+Copyright 2020 Michael Bridgen <mikeb@squaremobius.net>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package test
+
+import (
+	"testing"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+func TestFiles(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Files comparison helper")
+}
+
+var _ = Describe("Test helper", func() {
+	It("matches when given the same directory", func() {
+		ExpectMatchingDirectories("testdata/base", "testdata/base")
+	})
+	It("matches when given equivalent directories", func() {
+		ExpectMatchingDirectories("testdata/base", "testdata/equiv")
+	})
+})

pkg/update/update_test.go

@@ -3,77 +3,33 @@ package update
 import (
 	"io/ioutil"
 	"os"
-	"path/filepath"
-	"strings"
 	"testing"
 
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
-)
 
-// TODO rewrite this as just doing the diff, so I can test that it
-// fails at the right times too.
-func expectMatchingDirectories(actualRoot, expectedRoot string) {
-	Expect(actualRoot).To(BeADirectory())
-	filepath.Walk(expectedRoot, func(path string, info os.FileInfo, err error) error {
-		if err != nil {
-			return nil
-		}
-		// ignore emacs backups
-		if strings.HasSuffix(path, "~") {
-			return nil
-		}
-		relPath := path[len(expectedRoot):]
-		actualPath := filepath.Join(actualRoot, relPath)
-		if info.IsDir() {
-			Expect(actualPath).To(BeADirectory())
-			return nil
-		}
-		Expect(actualPath).To(BeARegularFile())
-		actualBytes, err := ioutil.ReadFile(actualPath)
-		expectedBytes, err := ioutil.ReadFile(path)
-		Expect(string(actualBytes)).To(Equal(string(expectedBytes)))
-		return nil
-	})
-	filepath.Walk(actualRoot, func(path string, info os.FileInfo, err error) error {
-		p := path[len(actualRoot):]
-		// ignore emacs backups
-		if strings.HasSuffix(p, "~") {
-			return nil
-		}
-		Expect(filepath.Join(expectedRoot, p)).To(BeAnExistingFile())
-		return nil
-	})
-}
+	"github.com/squaremo/image-automation-controller/pkg/test"
+)
 
 func TestUpdate(t *testing.T) {
 	RegisterFailHandler(Fail)
 	RunSpecs(t, "Update suite")
 }
 
-var _ = Describe("Test helper", func() {
-	It("matches when given the same directory", func() {
-		expectMatchingDirectories("testdata/base", "testdata/base")
-	})
-	It("matches when given equivalent directories", func() {
-		expectMatchingDirectories("testdata/base", "testdata/equiv")
-	})
-})
-
 var _ = Describe("Update image everywhere", func() {
 	It("leaves a different image alone", func() {
 		tmp, err := ioutil.TempDir("", "gotest")
 		Expect(err).ToNot(HaveOccurred())
 		defer os.RemoveAll(tmp)
 		Expect(UpdateImageEverywhere("testdata/leave/original", tmp, "notused", "notused:v1.0.1")).To(Succeed())
-		expectMatchingDirectories("testdata/leave/expected", tmp)
+		test.ExpectMatchingDirectories("testdata/leave/expected", tmp)
 	})
 
 	It("replaces the given image", func() {
 		tmp, err := ioutil.TempDir("", "gotest")
 		Expect(err).ToNot(HaveOccurred())
 		defer os.RemoveAll(tmp)
 		Expect(UpdateImageEverywhere("testdata/replace/original", tmp, "used", "used:v1.1.0")).To(Succeed())
-		expectMatchingDirectories("testdata/replace/expected", tmp)
+		test.ExpectMatchingDirectories("testdata/replace/expected", tmp)
 	})
 })