feat!: prepare the third version

.golangci.json

@@ -30,7 +30,8 @@
       "varcheck",
       "ifshort",
       "nosnakecase",
-      "rowserrcheck"
+      "rowserrcheck",
+      "depguard"
     ]
   },
   "linters-settings": {

Makefile

@@ -1,4 +1,4 @@
-GOLANG_CI_LINT_VER:=v1.51.2
+GOLANG_CI_LINT_VER:=v1.53.2
 OUT_BIN?=${PWD}/bin/gherkingen
 COVER_PACKAGES=./...
 VERSION?=${shell git describe --tags}

README.md

@@ -16,11 +16,12 @@ The generator is very customizable, it is possible to customize an output for an
 
 # What is for?
 ## Simple example
+
 **Given** [feature](internal/generator/examples/readme.feature) [[reference](https://cucumber.io/docs/gherkin/reference/)]:
 ```feature
 Feature: Application command line tool
   Scenario: User wants to see usage information
-    When flag <flag> is provided
+    When the application is started with <flag>
     Then usage should be printed <printed>
     And exit status should be <exit_status>
     Examples:
@@ -34,9 +35,11 @@ Feature: Application command line tool
 
 ```go
 func TestApplicationCommandLineTool(t *testing.T) {
-	f := bdd.NewFeature(t, "Application command line tool")
+	t.Parallel()
+
+	t.Run("User wants to see usage information", func(t *testing.T) {
+		t.Parallel()
 
-	f.Scenario("User wants to see usage information", func(t *testing.T, f *bdd.Feature) {
 		type testCase struct {
 			Flag       string `field:"<flag>"`
 			ExitStatus int    `field:"<exit_status>"`
@@ -49,94 +52,52 @@ func TestApplicationCommandLineTool(t *testing.T) {
 			"-invalid_1_false": {"-invalid", 1, false},
 		}
 
-		f.TestCases(testCases, func(t *testing.T, f *bdd.Feature, tc testCase) {
-			f.When("flag <flag> is provided", func() {
+		for name, testCase := range testCases {
+			testCase := testCase
 
-			})
-			f.Then("usage should be printed <printed>", func() {
+			t.Run(name, func(t *testing.T) {
+				t.Parallel()
 
-			})
-			f.And("exit status should be <exit_status>", func() {
+				// When the application is started with <flag>.
+
+				// Then usage should be printed <printed>.
+
+				// And exit status should be <exit_status>.
 
 			})
-		})
+		}
 	})
 }
 ```
 
-**Then** on failure next logs will be printed:
-
-```feature
-Feature: Application command line tool
-	Scenario: User wants to see usage information
-		# TestCase: {Flag:-invalid ExitStatus:1 Printed:false}
-		When flag -invalid is provided
-		Then usage should be printed false
-		And exit status should be 1
-```
-
 **Example** implementation:
-```go
-f.TestCases(testCases, func(t *testing.T, f *bdd.Feature, tc testCase) {
-	var exitStatus int
-	arguments := []string{}
-
-	f.When("flag <flag> is provided", func() {
-		arguments = append(arguments, tc.Flag)
-	})
-	f.Then("usage should be printed <printed>", func() {
-		var output string
-		output, exitStatus = runApp(t, arguments)
-		assert.Equal(t, tc.Printed, strings.Contains(output, "usage"))
-	})
-	f.And("exit status should be <exit_status>", func() {
-		assert.Equal(t, tc.ExitStatus, exitStatus)
-	})
-})
-```
-
-## Simplified template
-
-A simplified template is also available. It uses only the std [testing](https://pkg.go.dev/testing) package without any other dependency. Steps are defined by comments.
-Provide `-template @/std.simple.v1.go.tmpl` to to use [this](internal/assets/std.simple.v1.go.tmpl) template.
 
 ```go
-func TestApplicationCommandLineTool(t *testing.T) {
+t.Run(name, func(t *testing.T) {
 	t.Parallel()
 
-	t.Run("User wants to see usage information", func(t *testing.T) {
-		t.Parallel()
-
-		type testCase struct {
-			Flag       string `field:"<flag>"`
-			ExitStatus int    `field:"<exit_status>"`
-			Printed    bool   `field:"<printed>"`
-		}
+	// When flag <flag> is provided.
+	arguments := []string{testCase.Flag}
 
-		testCases := map[string]testCase{
-			"--help_0_true":    {"--help", 0, true},
-			"-help_0_true":     {"-help", 0, true},
-			"-invalid_1_false": {"-invalid", 1, false},
-		}
+	// Then usage should be printed <printed>.
+	var output string
+	output, exitStatus = runApp(t, arguments)
+	assert.Equal(t, testCase.Printed, strings.Contains(output, "usage"))
 
-		for name, tc := range testCases {
-			t.Run(name, func(t *testing.T) {
-				// When flag <flag> is provided.
-
-				// Then usage should be printed <printed>.
-
-				// And exit status should be <exit_status>.
-
-			})
-		}
-	})
-}
+	// And exit status should be <exit_status>.
+	assert.Equal(t, testCase.ExitStatus, exitStatus)
+})
 ```
 
 ## More advanced example
 
 See [internal/app/app.feature](internal/app/app.feature) and [internal/app/app_test.go](internal/app/app_test.go).
 
+## Version 3 changes
+
+1. Simplified template is set by default. In order to use the default template from the previous versions, provide the following flag `-template @/std.struct.v1.go.tmpl`.
+2. All tests will have `t.Parallel` by default. This behaviour can be disabled by providing the flag `-disable-go-parallel`.
+
 # Install
 
 ## Package
@@ -177,7 +138,7 @@ gherkingen -help
 ## Go
 
 ```bash
-go install github.com/hedhyw/gherkingen/v2/cmd/gherkingen@latest
+go install github.com/hedhyw/gherkingen/v3/cmd/gherkingen@latest
 # Notice: gherkingen -version will return "unknown" version.
 ```
 
@@ -219,10 +180,12 @@ gherkingen -list
 gherkingen --help
 
 Usage of gherkingen [FEATURE_FILE]:
+  -disable-go-parallel
+        disable execution of tests in parallel
   -format string
         output format: autodetect, json, go, raw (default "autodetect")
   -go-parallel
-        add parallel mark
+        add parallel mark (deprecated, enabled by default) (default true)
   -help
         print usage
   -list
@@ -232,7 +195,7 @@ Usage of gherkingen [FEATURE_FILE]:
   -permanent-ids
         The same calls to the generator always produces the same output
   -template string
-        template file (default "@/std.struct.v1.go.tmpl")
+        template file (default "@/std.simple.v1.go.tmpl")
   -version
         print version
 ```

cmd/gherkingen/main.go

@@ -3,7 +3,7 @@ package main
 import (
 	"os"
 
-	"github.com/hedhyw/gherkingen/v2/internal/app"
+	"github.com/hedhyw/gherkingen/v3/internal/app"
 )
 
 // Version will be set on build.

go.mod

@@ -1,4 +1,4 @@
-module github.com/hedhyw/gherkingen/v2
+module github.com/hedhyw/gherkingen/v3
 
 go 1.20
 

internal/app/app.feature

@@ -52,11 +52,11 @@ Feature: Application command line tool
     | true         |
     | false        |
 
-  Scenario: User gives an invalid flag
+  Scenario: User provides an invalid flag
     When flag -invalid is provided
-    Then a generation failed
+    Then an error is returned
 
-  Scenario: User wants to know version
+  Scenario: User asks for a version
     When <flag> is provided
     Then version is printed
     Examples:
@@ -73,11 +73,10 @@ Feature: Application command line tool
     | app.feature | not_found  |
 
   Scenario: User wants to run tests in parallel
-    When `-go-parallel` is provided
-    And `scenario.feature` is given
+    When `scenario.feature` is given
     Then generated code contains `t.Parallel()`
 
   Scenario: User wants to run tests sequentially
-    When `-go-parallel` is not provided
+    When `-disable-go-parallel` is provided
     And `scenario.feature` is given
     Then generated code doesn't contain `t.Parallel()`

internal/app/app.go

@@ -7,76 +7,83 @@ import (
 	"strings"
 	"time"
 
-	"github.com/hedhyw/gherkingen/v2/internal/model"
+	"github.com/hedhyw/gherkingen/v3/internal/model"
 
 	"github.com/google/uuid"
 )
 
 const (
-	internalPathPrefix = "@/"
-	defaultTemplate    = "std.struct.v1.go.tmpl"
+	internalPathPrefix       = "@/"
+	defaultTemplate          = "std.simple.v1.go.tmpl"
+	defaultDisableGoParallel = false
+	defaultOutputFormat      = model.FormatAutoDetect
 )
 
 // Run the application.
 func Run(arguments []string, out io.Writer, version string) (err error) {
-	flag.CommandLine.Init(flag.CommandLine.Name(), flag.ContinueOnError)
-	flag.CommandLine.SetOutput(out)
+	flagSet := flag.NewFlagSet(flag.CommandLine.Name(), flag.ContinueOnError)
+	flagSet.SetOutput(out)
 
-	outputFormat := flag.String(
+	outputFormat := flagSet.String(
 		"format",
-		string(model.FormatAutoDetect),
+		string(defaultOutputFormat),
 		"output format: "+strings.Join(model.Formats(), ", "),
 	)
-	templateFile := flag.String(
+	templateFile := flagSet.String(
 		"template",
 		internalPathPrefix+defaultTemplate,
 		"template file",
 	)
-	permanentIDs := flag.Bool(
+	permanentIDs := flagSet.Bool(
 		"permanent-ids",
 		false,
 		"The same calls to the generator always produces the same output",
 	)
-	helpCmd := flag.Bool(
+	helpCmd := flagSet.Bool(
 		"help",
 		false,
 		"print usage",
 	)
-	goParallel := flag.Bool(
+	_ = flagSet.Bool(
 		"go-parallel",
-		false,
-		"add parallel mark",
+		!defaultDisableGoParallel,
+		"add parallel mark (deprecated, enabled by default)",
+	)
+	disableGoParallel := flagSet.Bool(
+		"disable-go-parallel",
+		defaultDisableGoParallel,
+		"disable execution of tests in parallel",
 	)
-	listCmd := flag.Bool(
+	listCmd := flagSet.Bool(
 		"list",
 		false,
 		"list internal templates",
 	)
-	packageName := flag.String(
+	packageName := flagSet.String(
 		"package",
 		"generated_test",
 		"name of the generated package",
 	)
-	versionCmd := flag.Bool(
+	versionCmd := flagSet.Bool(
 		"version",
 		false,
 		"print version",
 	)
-	if err = flag.CommandLine.Parse(arguments); err != nil {
+	if err = flagSet.Parse(arguments); err != nil {
 		return err
 	}
 
+	var seed int64
+
 	if *permanentIDs {
-		// nolint:gosec // Usage for uniq ids.
-		uuid.SetRand(rand.New(rand.NewSource(0)))
+		seed = 1
 	} else {
-		// nolint:gosec // Usage for uniq ids.
-		uuid.SetRand(rand.New(rand.NewSource(time.Now().UnixNano())))
+		seed = time.Now().UnixNano()
 	}
 
 	var inputFile string
-	if flag.NArg() == 1 {
-		inputFile = flag.Args()[0]
+	if flagSet.NArg() == 1 {
+		inputFile = flagSet.Args()[0]
 	}
 
 	switch {
@@ -85,15 +92,27 @@ func Run(arguments []string, out io.Writer, version string) (err error) {
 	case *listCmd:
 		return runListTemplates(out)
 	case *helpCmd, inputFile == "":
-		return runHelp()
+		return runHelp(flagSet)
 	default:
 		return runGenerator(appArgs{
 			Output:       out,
 			OutputFormat: model.Format(*outputFormat),
 			TemplateFile: *templateFile,
 			InputFile:    inputFile,
 			PackageName:  *packageName,
-			GoParallel:   *goParallel,
+			GoParallel:   !(*disableGoParallel),
+			GenerateUUID: newUUIDRandomGenerator(seed),
 		})
 	}
 }
+
+func newUUIDRandomGenerator(seed int64) func() string {
+	// nolint:gosec // Usage for uniq ids.
+	randomGenerator := rand.New(rand.NewSource(seed))
+
+	return func() string {
+		uuidValue, err := uuid.NewRandomFromReader(randomGenerator)
+
+		return uuid.Must(uuidValue, err).String()
+	}
+}