feat: diff artifact capability added

Signed-off-by: Batuhan Apaydın <batuhan.apaydin@trendyol.com>

cmd/flux/diff_artifact_test.go

@@ -0,0 +1,109 @@
+//go:build unit
+// +build unit
+
+/*
+Copyright 2021 The Flux authors
+
+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 main
+
+import (
+	"context"
+	"fmt"
+	"testing"
+	"time"
+
+	"github.com/distribution/distribution/v3/configuration"
+	"github.com/distribution/distribution/v3/registry"
+	_ "github.com/distribution/distribution/v3/registry/auth/htpasswd"
+	_ "github.com/distribution/distribution/v3/registry/storage/driver/inmemory"
+	"github.com/phayes/freeport"
+	ctrl "sigs.k8s.io/controller-runtime"
+)
+
+var dockerReg string
+
+func setupRegistryServer(ctx context.Context) error {
+	// Registry config
+	config := &configuration.Configuration{}
+	port, err := freeport.GetFreePort()
+	if err != nil {
+		return fmt.Errorf("failed to get free port: %s", err)
+	}
+
+	dockerReg = fmt.Sprintf("localhost:%d", port)
+	config.HTTP.Addr = fmt.Sprintf("127.0.0.1:%d", port)
+	config.HTTP.DrainTimeout = time.Duration(10) * time.Second
+	config.Storage = map[string]configuration.Parameters{"inmemory": map[string]interface{}{}}
+	dockerRegistry, err := registry.NewRegistry(ctx, config)
+	if err != nil {
+		return fmt.Errorf("failed to create docker registry: %w", err)
+	}
+
+	// Start Docker registry
+	go dockerRegistry.ListenAndServe()
+
+	return nil
+}
+
+func TestDiffArtifact(t *testing.T) {
+	tests := []struct {
+		name     string
+		url      string
+		argsTpl  string
+		pushFile string
+		diffFile string
+		assert   assertFunc
+	}{
+		{
+			name:     "should not fail if there is no diff",
+			url:      "oci://%s/podinfo:1.0.0",
+			argsTpl:  "diff artifact  %s --path=%s",
+			pushFile: "./testdata/diff-artifact/deployment.yaml",
+			diffFile: "./testdata/diff-artifact/deployment.yaml",
+			assert:   assertGoldenFile("testdata/diff-artifact/success.golden"),
+		},
+		{
+			name:     "should fail if there is a diff",
+			url:      "oci://%s/podinfo:2.0.0",
+			argsTpl:  "diff artifact %s --path=%s",
+			pushFile: "./testdata/diff-artifact/deployment.yaml",
+			diffFile: "./testdata/diff-artifact/deployment-diff.yaml",
+			assert:   assertError("the remote artifact contents differs from the local one"),
+		},
+	}
+
+	ctx := ctrl.SetupSignalHandler()
+	err := setupRegistryServer(ctx)
+	if err != nil {
+		panic(fmt.Sprintf("failed to start docker registry: %s", err))
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tt.url = fmt.Sprintf(tt.url, dockerReg)
+			_, err := executeCommand("push artifact " + tt.url + " --path=" + tt.pushFile + " --source=test --revision=test")
+			if err != nil {
+				t.Fatalf(fmt.Errorf("failed to push image: %w", err).Error())
+			}
+
+			cmd := cmdTestCase{
+				args:   fmt.Sprintf(tt.argsTpl, tt.url, tt.diffFile),
+				assert: tt.assert,
+			}
+			cmd.runTestCmd(t)
+		})
+	}
+}