feat: support to run tests with multiple threads (#13)

Co-authored-by: rick <LinuxSuRen@users.noreply.github.com>

cmd/run.go

@@ -1,18 +1,26 @@
 package cmd
 
 import (
+	"context"
 	"fmt"
 	"path"
 	"path/filepath"
 	"strings"
+	"sync"
+	"time"
 
+	"github.com/linuxsuren/api-testing/pkg/render"
 	"github.com/linuxsuren/api-testing/pkg/runner"
 	"github.com/linuxsuren/api-testing/pkg/testing"
 	"github.com/spf13/cobra"
+	"golang.org/x/sync/semaphore"
 )
 
 type runOption struct {
-	pattern string
+	pattern  string
+	duration time.Duration
+	thread   int64
+	context  context.Context
 }
 
 // CreateRunCommand returns the run command
@@ -31,31 +39,84 @@ See also https://github.com/LinuxSuRen/api-testing/tree/master/sample`,
 	flags := cmd.Flags()
 	flags.StringVarP(&opt.pattern, "pattern", "p", "test-suite-*.yaml",
 		"The file pattern which try to execute the test cases")
+	flags.DurationVarP(&opt.duration, "duration", "", 0, "Running duration")
+	flags.Int64VarP(&opt.thread, "thread", "", 1, "Threads of the execution")
 	return
 }
 
 func (o *runOption) runE(cmd *cobra.Command, args []string) (err error) {
 	var files []string
-	ctx := getDefaultContext()
+	o.context = cmd.Context()
 
 	if files, err = filepath.Glob(o.pattern); err == nil {
 		for i := range files {
 			item := files[i]
-			if err = runSuite(item, ctx); err != nil {
+			if err = o.runSuiteWithDuration(item); err != nil {
 				return
 			}
 		}
 	}
 	return
 }
 
+func (o *runOption) runSuiteWithDuration(suite string) (err error) {
+	sem := semaphore.NewWeighted(o.thread)
+	stop := false
+	var timeout *time.Ticker
+	if o.duration > 0 {
+		timeout = time.NewTicker(o.duration)
+	} else {
+		// make sure having a valid timer
+		timeout = time.NewTicker(time.Second)
+	}
+	errChannel := make(chan error, 10)
+	var wait sync.WaitGroup
+
+	for !stop {
+		select {
+		case <-timeout.C:
+			stop = true
+		case err = <-errChannel:
+			if err != nil {
+				stop = true
+			}
+		default:
+			if err := sem.Acquire(o.context, 1); err != nil {
+				continue
+			}
+			wait.Add(1)
+			if o.duration <= 0 {
+				stop = true
+			}
+
+			go func(ch chan error) {
+				defer sem.Release(1)
+				defer wait.Done()
+
+				ctx := getDefaultContext()
+				ch <- runSuite(suite, ctx)
+			}(errChannel)
+		}
+	}
+	err = <-errChannel
+	wait.Wait()
+	return
+}
+
 func runSuite(suite string, ctx map[string]interface{}) (err error) {
 	var testSuite *testing.TestSuite
 	if testSuite, err = testing.Parse(suite); err != nil {
 		return
 	}
 
-	testSuite.API = strings.TrimSuffix(testSuite.API, "/")
+	var result string
+	if result, err = render.Render("base api", testSuite.API, ctx); err == nil {
+		testSuite.API = result
+		testSuite.API = strings.TrimSuffix(testSuite.API, "/")
+	} else {
+		return
+	}
+
 	for _, testCase := range testSuite.Items {
 		// reuse the API prefix
 		if strings.HasPrefix(testCase.Request.API, "/") {

cmd/run_test.go

@@ -1,7 +1,6 @@
 package cmd
 
 import (
-	"fmt"
 	"net/http"
 	"testing"
 
@@ -89,7 +88,6 @@ func TestRunCommand(t *testing.T) {
 
 			root.SetArgs(append([]string{"run"}, tt.args...))
 
-			fmt.Println(tt.args)
 			err := root.Execute()
 			assert.Equal(t, tt.hasErr, err != nil, err)
 		})

go.mod

@@ -30,5 +30,6 @@ require (
 	github.com/spf13/cast v1.3.1 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	golang.org/x/crypto v0.3.0 // indirect
+	golang.org/x/sync v0.1.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -72,6 +72,8 @@ golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug
 golang.org/x/net v0.2.0/go.mod h1:KqCZLdyyvdV855qA2rE3GC2aiw5xGR5TEjj8smXukLY=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

main.go

@@ -9,7 +9,8 @@ import (
 
 func main() {
 	cmd := &cobra.Command{
-		Use: "atest",
+		Use:   "atest",
+		Short: "API testing tool",
 	}
 	cmd.AddCommand(c.CreateInitCommand(), c.CreateRunCommand())
 

pkg/render/doc.go

@@ -0,0 +1,2 @@
+// Package render provides a simple way to render as template
+package render

pkg/render/template.go

@@ -0,0 +1,21 @@
+package render
+
+import (
+	"bytes"
+	"html/template"
+	"strings"
+
+	"github.com/Masterminds/sprig/v3"
+)
+
+// Render render then return the result
+func Render(name, text string, ctx interface{}) (result string, err error) {
+	var tpl *template.Template
+	if tpl, err = template.New(name).Funcs(sprig.FuncMap()).Parse(text); err == nil {
+		buf := new(bytes.Buffer)
+		if err = tpl.Execute(buf, ctx); err == nil {
+			result = strings.TrimSpace(buf.String())
+		}
+	}
+	return
+}

pkg/render/template_test.go

@@ -0,0 +1,33 @@
+package render
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestRender(t *testing.T) {
+	tests := []struct {
+		name   string
+		text   string
+		ctx    interface{}
+		expect string
+	}{{
+		name:   "default",
+		text:   `{{default "hello" .Bar}}`,
+		ctx:    nil,
+		expect: "hello",
+	}, {
+		name:   "trim",
+		text:   `{{trim "   hello    "}}`,
+		ctx:    "",
+		expect: "hello",
+	}}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result, err := Render(tt.name, tt.text, tt.ctx)
+			assert.Nil(t, err)
+			assert.Equal(t, tt.expect, result)
+		})
+	}
+}

pkg/runner/simple.go

@@ -11,6 +11,7 @@ import (
 	"os"
 	"reflect"
 	"strings"
+	"time"
 
 	"github.com/andreyvit/diff"
 	"github.com/antonmedv/expr"
@@ -36,7 +37,9 @@ func RunTestCase(testcase *testing.TestCase, ctx interface{}) (output interface{
 		}
 	}()
 
-	client := http.Client{}
+	client := http.Client{
+		Timeout: time.Second * 30,
+	}
 	var requestBody io.Reader
 	if testcase.Request.Body != "" {
 		requestBody = bytes.NewBufferString(testcase.Request.Body)

pkg/testing/parser.go

@@ -1,13 +1,11 @@
 package testing
 
 import (
-	"bytes"
-	"html/template"
 	"net/http"
 	"os"
 	"strings"
 
-	"github.com/Masterminds/sprig/v3"
+	"github.com/linuxsuren/api-testing/pkg/render"
 	"gopkg.in/yaml.v2"
 )
 
@@ -24,15 +22,12 @@ func Parse(configFile string) (testSuite *TestSuite, err error) {
 // Render injects the template based context
 func (r *Request) Render(ctx interface{}) (err error) {
 	// template the API
-	var tpl *template.Template
-	if tpl, err = template.New("api").Funcs(sprig.FuncMap()).Parse(r.API); err != nil {
+	var result string
+	if result, err = render.Render("api", r.API, ctx); err == nil {
+		r.API = result
+	} else {
 		return
 	}
-	buf := new(bytes.Buffer)
-	if err = tpl.Execute(buf, ctx); err != nil {
-		return
-	}
-	r.API = buf.String()
 
 	// read body from file
 	if r.BodyFromFile != "" {
@@ -45,29 +40,26 @@ func (r *Request) Render(ctx interface{}) (err error) {
 
 	// template the header
 	for key, val := range r.Header {
-		if tpl, err = template.New("header").Funcs(sprig.FuncMap()).Parse(val); err == nil {
-			buf = new(bytes.Buffer)
-			if err = tpl.Execute(buf, ctx); err == nil {
-				r.Header[key] = buf.String()
-			}
+		if result, err = render.Render("header", val, ctx); err == nil {
+			r.Header[key] = result
+		} else {
+			return
 		}
 	}
 
 	// template the body
-	if tpl, err = template.New("body").Funcs(sprig.FuncMap()).Parse(r.Body); err == nil {
-		buf = new(bytes.Buffer)
-		if err = tpl.Execute(buf, ctx); err == nil {
-			r.Body = buf.String()
-		}
+	if result, err = render.Render("body", r.Body, ctx); err == nil {
+		r.Body = result
+	} else {
+		return
 	}
 
 	// template the form
 	for key, val := range r.Form {
-		if tpl, err = template.New("form").Funcs(sprig.FuncMap()).Parse(val); err == nil {
-			buf = new(bytes.Buffer)
-			if err = tpl.Execute(buf, ctx); err == nil {
-				r.Form[key] = buf.String()
-			}
+		if result, err = render.Render("form", val, ctx); err == nil {
+			r.Form[key] = result
+		} else {
+			return
 		}
 	}