cli(test): add --verbose flag to list test case names (#400)

Adds a -v/--verbose flag to the test command that prints individual test
case names as they are executed, similar to go test -v.

Closes redpanda-data/connect#893

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-authored-by: Michal Matczuk <michal.matczuk@redpanda.com>

Author: 3 people

internal/cli/test/cli.go

@@ -23,6 +23,12 @@ func CliCommand(cliOpts *common.CLIOpts) *cli.Command {
 			Usage: "allow components to write logs at a provided level to stdout.",
 		},
 
+		&cli.BoolFlag{
+			Name:    "verbose",
+			Aliases: []string{"v"},
+			Usage:   "print all test case names before they are executed.",
+		},
+
 		&cli.StringSliceFlag{
 			Name:    common.RootFlagResources,
 			Aliases: []string{"r"},
@@ -61,17 +67,18 @@ For more information check out the docs at:
 			if resourcesPaths, err = filepath.Globs(ifs.OS(), resourcesPaths); err != nil {
 				return fmt.Errorf("failed to resolve resource glob pattern: %w", err)
 			}
+			verbose := c.Bool("verbose")
 			if logLevel := c.String("log"); logLevel != "" {
 				logConf := log.NewConfig()
 				logConf.LogLevel = logLevel
 				logger, err := log.New(cliOpts.Stdout, ifs.OS(), logConf)
 				if err != nil {
 					return fmt.Errorf("failed to init logger: %w", err)
 				}
-				if RunAll(cliOpts, c.Args().Slice(), "_benthos_test", true, logger, resourcesPaths) {
+				if RunAll(cliOpts, c.Args().Slice(), "_benthos_test", true, verbose, logger, resourcesPaths) {
 					return nil
 				}
-			} else if RunAll(cliOpts, c.Args().Slice(), "_benthos_test", true, log.Noop(), resourcesPaths) {
+			} else if RunAll(cliOpts, c.Args().Slice(), "_benthos_test", true, verbose, log.Noop(), resourcesPaths) {
 				return nil
 			}
 			return &common.ErrExitCode{Err: errors.New("lint errors"), Code: 1}

internal/cli/test/command.go

@@ -125,7 +125,7 @@ func lintTarget(opts *common.CLIOpts, spec docs.FieldSpecs, path, testSuffix str
 // RunAll executes the test command for a slice of paths. The path can either be
 // a config file, a config files test definition file, a directory, or the
 // wildcard pattern './...'.
-func RunAll(opts *common.CLIOpts, paths []string, testSuffix string, lint bool, logger log.Modular, resourcesPaths []string) bool {
+func RunAll(opts *common.CLIOpts, paths []string, testSuffix string, lint, verbose bool, logger log.Modular, resourcesPaths []string) bool {
 	targets, err := GetTestTargets(paths, testSuffix)
 	if err != nil {
 		fmt.Fprintf(opts.Stderr, "Failed to obtain test targets: %v\n", err)
@@ -158,6 +158,15 @@ func RunAll(opts *common.CLIOpts, paths []string, testSuffix string, lint bool,
 				return false
 			}
 		}
+		if verbose {
+			for _, c := range targets[target] {
+				name := c.Name
+				if name == "" {
+					name = "(unnamed)"
+				}
+				fmt.Fprintf(opts.Stdout, "  - %v\n", name)
+			}
+		}
 		if failCases, err = Execute(opts.Environment, opts.MainConfigSpecCtor(), targets[target], target, resourcesPaths, logger); err != nil {
 			fmt.Fprintf(opts.Stderr, "Failed to execute test target '%v': %v\n", target, err)
 			return false

internal/cli/test/command_test.go

@@ -247,15 +247,15 @@ tests:
 	}
 	defer os.RemoveAll(testDir)
 
-	if !test.RunAll(common.NewCLIOpts("", ""), []string{filepath.Join(testDir, "foo.yaml")}, "_benthos_test", false, log.Noop(), nil) {
+	if !test.RunAll(common.NewCLIOpts("", ""), []string{filepath.Join(testDir, "foo.yaml")}, "_benthos_test", false, false, log.Noop(), nil) {
 		t.Error("Unexpected result")
 	}
 
-	if test.RunAll(common.NewCLIOpts("", ""), []string{filepath.Join(testDir, "foo.yaml")}, "_benthos_test", true, log.Noop(), nil) {
+	if test.RunAll(common.NewCLIOpts("", ""), []string{filepath.Join(testDir, "foo.yaml")}, "_benthos_test", true, false, log.Noop(), nil) {
 		t.Error("Unexpected result")
 	}
 
-	if test.RunAll(common.NewCLIOpts("", ""), []string{testDir}, "_benthos_test", true, log.Noop(), nil) {
+	if test.RunAll(common.NewCLIOpts("", ""), []string{testDir}, "_benthos_test", true, false, log.Noop(), nil) {
 		t.Error("Unexpected result")
 	}
 }