feat: issue#647 export log to file (#938)

* add the option to export log to a local file

* change position

* add validation for json file

* add test for validation

* change help sentence

* capital letter

* fix code bugs and not fail test when dir is not valid

* discard validation

* add test for checking invalid dir

---------

Co-authored-by: Alon Zylberberg <alon@Alons-MacBook-Pro.local>
Co-authored-by: Alon Zylberberg <alon@Alons-MBP.Home>

cmd/test/main.go

@@ -51,6 +51,7 @@ type K8sValidator interface {
 
 type TestCommandFlags struct {
 	Output               string
+	SaveResults          string
 	K8sVersion           string
 	ExcludePattern       string
 	IgnoreMissingSchemas bool
@@ -70,6 +71,7 @@ type TestCommandFlags struct {
 func NewTestCommandFlags() *TestCommandFlags {
 	return &TestCommandFlags{
 		Output:               "",
+		SaveResults:          "",
 		K8sVersion:           "",
 		ExcludePattern:       "",
 		IgnoreMissingSchemas: false,
@@ -149,6 +151,7 @@ type CliClient interface {
 
 type TestCommandData struct {
 	Output                string
+	SaveResults           string
 	K8sVersion            string
 	ExcludePattern        string
 	IgnoreMissingSchemas  bool
@@ -275,6 +278,7 @@ func (flags *TestCommandFlags) AddFlags(cmd *cobra.Command) {
 	cmd.Flags().BoolVar(&flags.OnlyK8sFiles, "only-k8s-files", false, "Evaluate only valid yaml files with the properties 'apiVersion' and 'kind'. Ignore everything else")
 	cmd.Flags().BoolVar(&flags.Verbose, "verbose", false, "Display 'How to Fix' link")
 	cmd.Flags().BoolVar(&flags.NoRecord, "no-record", false, "Don’t send policy checks metadata to the backend")
+	cmd.Flags().StringVarP(&flags.SaveResults, "save-results", "", "", "Enter the path to the directory where you want to save the output file")
 
 	cmd.Flags().StringVar(&flags.SkipValidation, "skip-validation", "", "Skip validation step. Possible values: 'schema'")
 
@@ -349,6 +353,7 @@ func GenerateTestCommandData(testCommandFlags *TestCommandFlags, localConfigCont
 	}
 
 	testCommandOptions := &TestCommandData{Output: testCommandFlags.Output,
+		SaveResults:           testCommandFlags.SaveResults,
 		K8sVersion:            k8sVersion,
 		ExcludePattern:        testCommandFlags.ExcludePattern,
 		IgnoreMissingSchemas:  testCommandFlags.IgnoreMissingSchemas,
@@ -465,7 +470,7 @@ func test(ctx *TestCommandContext, paths []string, testCommandData *TestCommandD
 		PassedPolicyCheckCount:    passedPolicyCheckCount,
 	}
 
-	err = evaluation.PrintResults(&evaluation.PrintResultsData{
+	evaluationData := &evaluation.PrintResultsData{
 		Results:               results,
 		AdditionalJUnitData:   evaluationResultData.AdditionalJUnitData,
 		InvalidYamlFiles:      validationManager.InvalidYamlFiles(),
@@ -481,7 +486,20 @@ func test(ctx *TestCommandContext, paths []string, testCommandData *TestCommandD
 		CliVersion:            ctx.CliVersion,
 		IsCI:                  ctx.CiContext.IsCI,
 		Quiet:                 testCommandData.Quiet,
-	})
+	}
+	err = evaluation.PrintResults(evaluationData)
+
+	if testCommandData.SaveResults != "" {
+		resultsText, err := evaluation.GetjsonResult(evaluationData)
+		if err != nil {
+			return err
+		}
+
+		err = ioutil.WriteFile(testCommandData.SaveResults, []byte(resultsText), 0666)
+		if err != nil {
+			return err
+		}
+	}
 
 	if evaluationResultData.PromptMessage != "" {
 		ctx.Printer.PrintPromptMessage(evaluationResultData.PromptMessage)

cmd/test/main_test.go

@@ -748,6 +748,7 @@ func TestTestCommandFlagsValidation(t *testing.T) {
 	test_testCommand_output_flags_validation(t, ctx)
 	test_testCommand_version_flags_validation(t, ctx)
 	test_testCommand_no_record_flag(t, ctx)
+	test_testCommand_save_results_flag(t, ctx)
 }
 
 func TestTestCommandEmptyDir(t *testing.T) {
@@ -918,6 +919,15 @@ func test_testCommand_no_record_flag(t *testing.T, ctx *TestCommandContext) {
 	assert.Equal(t, ViolationsFoundError, err)
 }
 
+func test_testCommand_save_results_flag(t *testing.T, ctx *TestCommandContext) {
+	flags := TestCommandFlags{SaveResults: "./"}
+	err := flags.Validate()
+	assert.NoError(t, err)
+
+	err = executeTestCommand(ctx, []string{"8/*", "--save-results=" + "../non-exsisted-dir/test.json"})
+	assert.EqualError(t, err, "open ../non-exsisted-dir/test.json: no such file or directory")
+}
+
 func newFilesConfigurationsChan(path string) chan *extractor.FileConfigurations {
 	filesConfigurationsChan := make(chan *extractor.FileConfigurations, 1)