Merge branch 'main' into byx/dev

boomer.go

@@ -3,6 +3,7 @@ package hrp
 import (
 	"time"
 
+	"github.com/jinzhu/copier"
 	"github.com/rs/zerolog/log"
 
 	"github.com/httprunner/hrp/internal/boomer"
@@ -45,6 +46,11 @@ func (b *hrpBoomer) Run(testcases ...ITestCase) {
 		if err != nil {
 			panic(err)
 		}
+		cfg := testcase.Config.ToStruct()
+		err = initParameterIterator(cfg, "boomer")
+		if err != nil {
+			panic(err)
+		}
 		task := b.convertBoomerTask(testcase)
 		taskSlice = append(taskSlice, task)
 	}
@@ -63,9 +69,21 @@ func (b *hrpBoomer) convertBoomerTask(testcase *TestCase) *boomer.Task {
 			testcaseSuccess := true       // flag whole testcase result
 			var transactionSuccess = true // flag current transaction result
 
+			cfg := testcase.Config.ToStruct()
+			caseConfig := &TConfig{}
+			// copy config to avoid data racing
+			if err := copier.Copy(caseConfig, cfg); err != nil {
+				log.Error().Err(err).Msg("copy config data failed")
+			}
+			// iterate through all parameter iterators and update case variables
+			for _, it := range caseConfig.ParametersSetting.Iterators {
+				if it.HasNext() {
+					caseConfig.Variables = mergeVariables(it.Next(), caseConfig.Variables)
+				}
+			}
 			startTime := time.Now()
 			for index, step := range testcase.TestSteps {
-				stepData, err := runner.runStep(index)
+				stepData, err := runner.runStep(index, caseConfig)
 				if err != nil {
 					// step failed
 					var elapsed int64

examples/account.csv

@@ -0,0 +1,4 @@
+username,password
+test1,111111
+test2,222222
+test3,333333

examples/parameters_test.json

@@ -0,0 +1,61 @@
+{
+  "config": {
+    "name": "request methods testcase: validate with parameters",
+    "parameters": {
+      "user_agent": [
+        "iOS/10.1",
+        "iOS/10.2"
+      ],
+      "username-password": "${parameterize(examples/account.csv)}"
+    },
+    "parameters_setting": {
+      "strategy": {
+        "user_agent": "sequential",
+        "username-password": "random"
+      },
+      "iteration": 6
+    },
+    "variables": {
+      "app_version": "v1",
+      "user_agent": "iOS/10.3"
+    },
+    "base_url": "https://postman-echo.com",
+    "verify": false
+  },
+  "teststeps": [
+    {
+      "name": "get with params",
+      "variables": {
+        "foo1": "$username",
+        "foo2": "$password",
+        "foo3": "$user_agent"
+      },
+      "request": {
+        "method": "GET",
+        "url": "/get",
+        "params": {
+          "foo1": "$foo1",
+          "foo2": "$foo2",
+          "foo3": "$foo3"
+        },
+        "headers": {
+          "User-Agent": "$user_agent,$app_version"
+        }
+      },
+      "validate": [
+        {
+          "check": "status_code",
+          "assert": "equals",
+          "expect": 200,
+          "msg": "check status code"
+        },
+        {
+          "check": "body.args.foo3",
+          "assert": "not_equal",
+          "expect": "iOS/10.3",
+          "msg": "check app version"
+        }
+      ]
+    }
+  ]
+}

examples/parameters_test.yaml

@@ -0,0 +1,40 @@
+config:
+  name: "request methods testcase: validate with parameters"
+  parameters:
+    user_agent: [ "iOS/10.1", "iOS/10.2" ]
+    username-password: ${parameterize(examples/account.csv)}
+  parameters_setting:
+    strategy:
+      user_agent: "sequential"
+      username-password: "random"
+    iteration: 6
+  variables:
+    app_version: v1
+    user_agent: iOS/10.3
+  base_url: "https://postman-echo.com"
+  verify: False
+
+teststeps:
+  - name: get with params
+    variables:
+      foo1: $username
+      foo2: $password
+      foo3: $user_agent
+    request:
+      method: GET
+      url: /get
+      params:
+        foo1: $foo1
+        foo2: $foo2
+        foo3: $foo3
+      headers:
+        User-Agent: $user_agent,$app_version
+    validate:
+      - check: status_code
+        assert: equals
+        expect: 200
+        msg: check status code
+      - check: body.args.foo3
+        assert: not_equal
+        expect: iOS/10.3
+        msg: check app version

internal/builtin/function.go

@@ -2,10 +2,16 @@ package builtin
 
 import (
 	"crypto/md5"
+	"encoding/csv"
 	"encoding/hex"
+	"io/ioutil"
 	"math"
 	"math/rand"
+	"path/filepath"
+	"strings"
 	"time"
+
+	"github.com/rs/zerolog/log"
 )
 
 var Functions = map[string]interface{}{
@@ -13,7 +19,9 @@ var Functions = map[string]interface{}{
 	"sleep":             sleep,           // call with one argument
 	"gen_random_string": genRandomString, // call with one argument
 	"max":               math.Max,        // call with two arguments
-	"md5":               MD5,			  // call with one argument
+	"md5":               MD5,			        // call with one argument
+	"parameterize":      loadFromCSV,
+	"P":                 loadFromCSV,
 }
 
 func init() {
@@ -44,3 +52,33 @@ func MD5(str string) string {
 	hasher.Write([]byte(str))
 	return hex.EncodeToString(hasher.Sum(nil))
 }
+
+func loadFromCSV(path string) []map[string]interface{} {
+	path, err := filepath.Abs(path)
+	if err != nil {
+		log.Error().Str("path", path).Err(err).Msg("convert absolute path failed")
+		panic(err)
+	}
+	log.Info().Str("path", path).Msg("load csv file")
+
+	file, err := ioutil.ReadFile(path)
+	if err != nil {
+		log.Error().Err(err).Msg("load csv file failed")
+		panic(err)
+	}
+	r := csv.NewReader(strings.NewReader(string(file)))
+	content, err := r.ReadAll()
+	if err != nil {
+		log.Error().Err(err).Msg("parse csv file failed")
+		panic(err)
+	}
+	var result []map[string]interface{}
+	for i := 1; i < len(content); i++ {
+		row := make(map[string]interface{})
+		for j := 0; j < len(content[i]); j++ {
+			row[content[0][j]] = content[i][j]
+		}
+		result = append(result, row)
+	}
+	return result
+}

models.go

@@ -1,5 +1,11 @@
 package hrp
 
+import (
+	"math/rand"
+	"sync"
+	"time"
+)
+
 const (
 	httpGET     string = "GET"
 	httpHEAD    string = "HEAD"
@@ -13,13 +19,68 @@ const (
 // TConfig represents config data structure for testcase.
 // Each testcase should contain one config part.
 type TConfig struct {
-	Name       string                 `json:"name" yaml:"name"` // required
-	Verify     bool                   `json:"verify,omitempty" yaml:"verify,omitempty"`
-	BaseURL    string                 `json:"base_url,omitempty" yaml:"base_url,omitempty"`
-	Variables  map[string]interface{} `json:"variables,omitempty" yaml:"variables,omitempty"`
-	Parameters map[string]interface{} `json:"parameters,omitempty" yaml:"parameters,omitempty"`
-	Export     []string               `json:"export,omitempty" yaml:"export,omitempty"`
-	Weight     int                    `json:"weight,omitempty" yaml:"weight,omitempty"`
+	Name              string                 `json:"name" yaml:"name"` // required
+	Verify            bool                   `json:"verify,omitempty" yaml:"verify,omitempty"`
+	BaseURL           string                 `json:"base_url,omitempty" yaml:"base_url,omitempty"`
+	Variables         map[string]interface{} `json:"variables,omitempty" yaml:"variables,omitempty"`
+	Parameters        map[string]interface{} `json:"parameters,omitempty" yaml:"parameters,omitempty"`
+	ParametersSetting *TParamsConfig         `json:"parameters_setting,omitempty" yaml:"parameters_setting,omitempty"`
+	Export            []string               `json:"export,omitempty" yaml:"export,omitempty"`
+	Weight            int                    `json:"weight,omitempty" yaml:"weight,omitempty"`
+}
+
+type TParamsConfig struct {
+	Strategy  interface{} `json:"strategy,omitempty" yaml:"strategy,omitempty"`
+	Iteration int         `json:"iteration,omitempty" yaml:"iteration,omitempty"`
+	Iterators []*Iterator `json:"parameterIterator,omitempty" yaml:"parameterIterator,omitempty"` //保存参数的迭代器
+}
+
+const (
+	strategyRandom     string = "random"
+	strategySequential string = "Sequential"
+)
+
+type paramsType []map[string]interface{}
+
+type Iterator struct {
+	sync.Mutex
+	data      paramsType
+	strategy  string // random, sequential
+	iteration int
+	index     int
+}
+
+func (params paramsType) Iterator() *Iterator {
+	return &Iterator{
+		data:      params,
+		iteration: len(params),
+		index:     0,
+	}
+}
+
+func (iter *Iterator) HasNext() bool {
+	if iter.iteration == -1 {
+		return true
+	}
+	return iter.index < iter.iteration
+}
+
+func (iter *Iterator) Next() (value map[string]interface{}) {
+	iter.Lock()
+	defer iter.Unlock()
+	if len(iter.data) == 0 {
+		iter.index++
+		return map[string]interface{}{}
+	}
+	if iter.strategy == strategyRandom {
+		randSource := rand.New(rand.NewSource(time.Now().Unix()))
+		randIndex := randSource.Intn(len(iter.data))
+		value = iter.data[randIndex]
+	} else {
+		value = iter.data[iter.index%len(iter.data)]
+	}
+	iter.index++
+	return value
 }
 
 // Request represents HTTP request data structure.

parser.go

@@ -9,6 +9,7 @@ import (
 	"strings"
 
 	"github.com/maja42/goval"
+	"github.com/pkg/errors"
 	"github.com/rs/zerolog/log"
 
 	"github.com/httprunner/hrp/internal/builtin"
@@ -255,7 +256,6 @@ func callFunc(funcName string, arguments ...interface{}) (interface{}, error) {
 		// function not found
 		return nil, fmt.Errorf("function %s is not found", funcName)
 	}
-
 	funcValue := reflect.ValueOf(function)
 	if funcValue.Kind() != reflect.Func {
 		// function not valid
@@ -493,3 +493,179 @@ func findallVariables(raw string) variableSet {
 
 	return varSet
 }
+
+func genCartesianProduct(paramsMap map[string]paramsType) paramsType {
+	if len(paramsMap) == 0 {
+		return nil
+	}
+	var params []paramsType
+	for _, v := range paramsMap {
+		params = append(params, v)
+	}
+	var cartesianProduct paramsType
+	cartesianProduct = params[0]
+	for i := 0; i < len(params)-1; i++ {
+		var tempProduct paramsType
+		for _, param1 := range cartesianProduct {
+			for _, param2 := range params[i+1] {
+				tempProduct = append(tempProduct, mergeVariables(param1, param2))
+			}
+		}
+		cartesianProduct = tempProduct
+	}
+	return cartesianProduct
+}
+
+func parseParameters(parameters map[string]interface{}, variablesMapping map[string]interface{}) (map[string]paramsType, error) {
+	if len(parameters) == 0 {
+		return nil, nil
+	}
+	parsedParametersSlice := make(map[string]paramsType)
+	var err error
+	for k, v := range parameters {
+		var parameterSlice paramsType
+		rawValue := reflect.ValueOf(v)
+		switch rawValue.Kind() {
+		case reflect.String:
+			// e.g. username-password: ${parameterize(examples/account.csv)} -> [{"username": "test1", "password": "111111"}, {"username": "test2", "password": "222222"}]
+			var parsedParameterContent interface{}
+			parsedParameterContent, err = parseString(rawValue.String(), variablesMapping)
+			if err != nil {
+				log.Error().Interface("parameterContent", rawValue).Msg("[parseParameters] parse parameter content error")
+				return nil, err
+			}
+			parsedParameterRawValue := reflect.ValueOf(parsedParameterContent)
+			if parsedParameterRawValue.Kind() != reflect.Slice {
+				log.Error().Interface("parameterContent", parsedParameterRawValue).Msg("[parseParameters] parsed parameter content should be slice")
+				return nil, errors.New("parsed parameter content should be slice")
+			}
+			parameterSlice, err = parseSlice(k, parsedParameterRawValue.Interface())
+		case reflect.Slice:
+			// e.g. user_agent: ["iOS/10.1", "iOS/10.2"] -> [{"user_agent": "iOS/10.1"}, {"user_agent": "iOS/10.2"}]
+			parameterSlice, err = parseSlice(k, rawValue.Interface())
+		default:
+			log.Error().Interface("parameter", parameters).Msg("[parseParameters] parameter content should be slice or text(functions call)")
+			return nil, errors.New("parameter content should be slice or text(functions call)")
+		}
+		if err != nil {
+			return nil, err
+		}
+		parsedParametersSlice[k] = parameterSlice
+	}
+	return parsedParametersSlice, nil
+}
+
+func parseSlice(parameterName string, parameterContent interface{}) ([]map[string]interface{}, error) {
+	parameterNameSlice := strings.Split(parameterName, "-")
+	var parameterSlice []map[string]interface{}
+	parameterContentSlice := reflect.ValueOf(parameterContent)
+	if parameterContentSlice.Kind() != reflect.Slice {
+		return nil, errors.New("parameterContent should be slice")
+	}
+	for i := 0; i < parameterContentSlice.Len(); i++ {
+		parameterMap := make(map[string]interface{})
+		elem := reflect.ValueOf(parameterContentSlice.Index(i).Interface())
+		switch elem.Kind() {
+		case reflect.Map:
+			// e.g. "username-password": [{"username": "test1", "password": "passwd1", "other": "111"}, {"username": "test2", "password": "passwd2", "other": ""222}]
+			// -> [{"username": "test1", "password": "passwd1"}, {"username": "test2", "password": "passwd2"}]
+			for _, key := range parameterNameSlice {
+				if _, ok := elem.Interface().(map[string]interface{})[key]; ok {
+					parameterMap[key] = elem.MapIndex(reflect.ValueOf(key)).Interface()
+				} else {
+					log.Error().Interface("parameterNameSlice", parameterNameSlice).Msg("[parseParameters] parameter name not found")
+					return nil, errors.New("parameter name not found")
+				}
+			}
+		case reflect.Slice:
+			// e.g. "username-password": [["test1", "passwd1"], ["test2", "passwd2"]]
+			// -> [{"username": "test1", "password": "passwd1"}, {"username": "test2", "password": "passwd2"}]
+			if len(parameterNameSlice) != elem.Len() {
+				log.Error().Interface("parameterNameSlice", parameterNameSlice).Interface("parameterContent", elem.Interface()).Msg("[parseParameters] parameter name slice and parameter content slice should have the same length")
+				return nil, errors.New("parameter name slice and parameter content slice should have the same length")
+			} else {
+				for j := 0; j < elem.Len(); j++ {
+					parameterMap[parameterNameSlice[j]] = elem.Index(j).Interface()
+				}
+			}
+		default:
+			// e.g. "app_version": [3.1, 3.0]
+			// -> [{"app_version": 3.1}, {"app_version": 3.0}]
+			if len(parameterNameSlice) != 1 {
+				log.Error().Interface("parameterNameSlice", parameterNameSlice).Msg("[parseParameters] parameter name slice should have only one element when parameter content is string")
+				return nil, errors.New("parameter name slice should have only one element when parameter content is string")
+			}
+			parameterMap[parameterNameSlice[0]] = elem.Interface()
+		}
+		parameterSlice = append(parameterSlice, parameterMap)
+	}
+	return parameterSlice, nil
+}
+
+func initParameterIterator(cfg *TConfig, mode string) (err error) {
+	var parameters map[string]paramsType
+	parameters, err = parseParameters(cfg.Parameters, cfg.Variables)
+	if err != nil {
+		return err
+	}
+	// parse config parameters setting
+	if cfg.ParametersSetting == nil {
+		cfg.ParametersSetting = &TParamsConfig{Iterators: []*Iterator{}}
+	}
+	// boomer模式下不限制迭代次数
+	if mode == "boomer" {
+		cfg.ParametersSetting.Iteration = -1
+	}
+	rawValue := reflect.ValueOf(cfg.ParametersSetting.Strategy)
+	switch rawValue.Kind() {
+	case reflect.Map:
+		// strategy: {"user_agent": "sequential", "username-password": "random"}, 每个参数对应一个迭代器，每个迭代器随机、顺序选取元素互不影响
+		for k, v := range parameters {
+			if _, ok := rawValue.Interface().(map[string]interface{})[k]; ok {
+				// use strategy if configured
+				cfg.ParametersSetting.Iterators = append(
+					cfg.ParametersSetting.Iterators,
+					newIterator(v, rawValue.MapIndex(reflect.ValueOf(k)).Interface().(string), cfg.ParametersSetting.Iteration),
+				)
+			} else {
+				// use sequential strategy by default
+				cfg.ParametersSetting.Iterators = append(
+					cfg.ParametersSetting.Iterators,
+					newIterator(v, strategySequential, cfg.ParametersSetting.Iteration),
+				)
+			}
+		}
+	case reflect.String:
+		// strategy: random, 仅生成一个的迭代器，该迭代器在参数笛卡尔积slice中随机选取元素
+		if len(rawValue.String()) == 0 {
+			cfg.ParametersSetting.Strategy = strategySequential
+		} else {
+			cfg.ParametersSetting.Strategy = strings.ToLower(rawValue.String())
+		}
+		cfg.ParametersSetting.Iterators = append(
+			cfg.ParametersSetting.Iterators,
+			newIterator(genCartesianProduct(parameters), cfg.ParametersSetting.Strategy.(string), cfg.ParametersSetting.Iteration),
+		)
+	default:
+		// default strategy: sequential, 仅生成一个的迭代器，该迭代器在参数笛卡尔积slice中顺序选取元素
+		cfg.ParametersSetting.Strategy = strategySequential
+		cfg.ParametersSetting.Iterators = append(
+			cfg.ParametersSetting.Iterators,
+			newIterator(genCartesianProduct(parameters), cfg.ParametersSetting.Strategy.(string), cfg.ParametersSetting.Iteration),
+		)
+	}
+	return nil
+}
+
+func newIterator(parameters paramsType, strategy string, iteration int) *Iterator {
+	iter := parameters.Iterator()
+	iter.strategy = strategy
+	if iteration > 0 {
+		iter.iteration = iteration
+	} else if iteration < 0 {
+		iter.iteration = -1
+	} else if iter.iteration == 0 {
+		iter.iteration = 1
+	}
+	return iter
+}

parser_test.go

@@ -618,3 +618,133 @@ func TestFindallVariables(t *testing.T) {
 		}
 	}
 }
+
+func TestParseParameters(t *testing.T) {
+	testData := []struct {
+		rawVars      map[string]interface{}
+		expectLength int
+	}{
+		{
+			map[string]interface{}{
+				"username-password": "${parameterize(examples/account.csv)}",
+				"user_agent":        []interface{}{"IOS/10.1", "IOS/10.2"}},
+			6,
+		},
+		{
+			map[string]interface{}{
+				"username-password": [][]interface{}{{"test1", "111111"}, {"test2", "222222"}, {"test3", "333333"}},
+				"user_agent":        []interface{}{"IOS/10.1", "IOS/10.2"},
+				"app_version":       []interface{}{0.3}},
+			6,
+		},
+		{
+			map[string]interface{}{
+				"username-password": [][]interface{}{{"test1", "111111"}, {"test2", "222222"}, {"test3", "333333"}},
+				"user_agent":        []interface{}{"IOS/10.1", "IOS/10.2"},
+				"app_version":       []interface{}{0.3, 0.4, 0.5}},
+			18,
+		},
+		{
+			map[string]interface{}{}, 0,
+		},
+		{
+			nil, 0,
+		},
+	}
+	for _, data := range testData {
+		params, _ := parseParameters(data.rawVars, map[string]interface{}{})
+		value := genCartesianProduct(params)
+		if !assert.Len(t, value, data.expectLength) {
+			t.Fail()
+		}
+	}
+}
+
+func TestParseParametersError(t *testing.T) {
+	testData := []struct {
+		rawVars map[string]interface{}
+	}{
+		{
+			map[string]interface{}{
+				"username_password": "${parameterize(examples/account.csv)}",
+				"user_agent":        []interface{}{"IOS/10.1", "IOS/10.2"}},
+		},
+		{
+			map[string]interface{}{
+				"username-password": "${parameterize(examples/account.csv)}",
+				"user-agent":        []interface{}{"IOS/10.1", "IOS/10.2"}},
+		},
+		{
+			map[string]interface{}{
+				"username-password": "${param(examples/account.csv)}",
+				"user_agent":        []interface{}{"IOS/10.1", "IOS/10.2"}},
+		},
+	}
+	for _, data := range testData {
+		_, err := parseParameters(data.rawVars, map[string]interface{}{})
+		if !assert.Error(t, err) {
+			t.Fail()
+		}
+	}
+}
+
+func TestParseSlice(t *testing.T) {
+	testData := []struct {
+		rawVar1 string
+		rawVar2 interface{}
+		expect  []map[string]interface{}
+	}{
+		{
+			"username-password",
+			[]map[string]interface{}{{"username": "test1", "password": 111111, "other": "111"}, {"username": "test2", "password": 222222, "other": "222"}},
+			[]map[string]interface{}{
+				{"username": "test1", "password": 111111},
+				{"username": "test2", "password": 222222},
+			},
+		},
+		{
+			"username-password",
+			[][]string{{"test1", "111111"}, {"test2", "222222"}},
+			[]map[string]interface{}{
+				{"username": "test1", "password": "111111"},
+				{"username": "test2", "password": "222222"},
+			},
+		},
+		{
+			"app_version",
+			[]float64{3.1, 3.0},
+			[]map[string]interface{}{
+				{"app_version": 3.1},
+				{"app_version": 3.0},
+			},
+		},
+	}
+	for _, data := range testData {
+		value, _ := parseSlice(data.rawVar1, data.rawVar2)
+		if !assert.Equal(t, data.expect, value) {
+			t.Fail()
+		}
+	}
+}
+
+func TestParseSliceError(t *testing.T) {
+	testData := []struct {
+		rawVar1 string
+		rawVar2 interface{}
+	}{
+		{
+			"app_version",
+			123,
+		},
+		{
+			"app_version",
+			"123",
+		},
+	}
+	for _, data := range testData {
+		_, err := parseSlice(data.rawVar1, data.rawVar2)
+		if !assert.Error(t, err) {
+			t.Fail()
+		}
+	}
+}

runner.go

@@ -98,10 +98,26 @@ func (r *hrpRunner) Run(testcases ...ITestCase) error {
 			log.Error().Err(err).Msg("[Run] convert ITestCase interface to TestCase struct failed")
 			return err
 		}
-		if err := r.newCaseRunner(testcase).run(); err != nil {
-			log.Error().Err(err).Msg("[Run] run testcase failed")
+		cfg := testcase.Config.ToStruct()
+		// parse config parameters
+		err = initParameterIterator(cfg, "runner")
+		if err != nil {
+			log.Error().Interface("parameters", cfg.Parameters).Err(err).Msg("parse config parameters failed")
 			return err
 		}
+		// 在runner模式下，指定整体策略，cfg.ParametersSetting.Iterators仅包含一个CartesianProduct的迭代器
+		for it := cfg.ParametersSetting.Iterators[0]; it.HasNext(); {
+			// iterate through all parameter iterators and update case variables
+			for _, it := range cfg.ParametersSetting.Iterators {
+				if it.HasNext() {
+					cfg.Variables = mergeVariables(it.Next(), cfg.Variables)
+				}
+			}
+			if err := r.newCaseRunner(testcase).run(); err != nil {
+				log.Error().Err(err).Msg("[Run] run testcase failed")
+				return err
+			}
+		}
 	}
 	return nil
 }
@@ -141,16 +157,16 @@ func (r *caseRunner) run() error {
 	if err := r.parseConfig(config); err != nil {
 		return err
 	}
-
+	cfg := config.ToStruct()
 	log.Info().Str("testcase", config.Name()).Msg("run testcase start")
+
 	r.startTime = time.Now()
 	for index := range r.TestCase.TestSteps {
-		_, err := r.runStep(index)
+		_, err := r.runStep(index, cfg)
 		if err != nil {
 			if r.hrpRunner.failfast {
 				return errors.Wrap(err, "abort running due to failfast setting")
 			}
-			log.Warn().Err(err).Msg("run step failed, continue next step")
 		}
 	}
 
@@ -158,8 +174,7 @@ func (r *caseRunner) run() error {
 	return nil
 }
 
-func (r *caseRunner) runStep(index int) (stepResult *stepData, err error) {
-	config := r.TestCase.Config
+func (r *caseRunner) runStep(index int, caseConfig *TConfig) (stepResult *stepData, err error) {
 	step := r.TestCase.TestSteps[index]
 
 	// step type priority order: transaction > rendezvous > testcase > request
@@ -179,23 +194,18 @@ func (r *caseRunner) runStep(index int) (stepResult *stepData, err error) {
 		log.Error().Err(err).Msg("copy step data failed")
 		return nil, err
 	}
-	copiedConfig := &TConfig{}
-	if err = copier.Copy(copiedConfig, config.ToStruct()); err != nil {
-		log.Error().Err(err).Msg("copy config data failed")
-		return nil, err
-	}
 
 	stepVariables := copiedStep.Variables
 	// override variables
 	// step variables > session variables (extracted variables from previous steps)
 	stepVariables = mergeVariables(stepVariables, r.sessionVariables)
 	// step variables > testcase config variables
-	stepVariables = mergeVariables(stepVariables, copiedConfig.Variables)
+	stepVariables = mergeVariables(stepVariables, caseConfig.Variables)
 
 	// parse step variables
 	parsedVariables, err := parseVariables(stepVariables)
 	if err != nil {
-		log.Error().Interface("variables", copiedConfig.Variables).Err(err).Msg("parse step variables failed")
+		log.Error().Interface("variables", caseConfig.Variables).Err(err).Msg("parse step variables failed")
 		return nil, err
 	}
 	copiedStep.Variables = parsedVariables // avoid data racing
@@ -212,7 +222,7 @@ func (r *caseRunner) runStep(index int) (stepResult *stepData, err error) {
 		}
 	} else {
 		// run request
-		copiedStep.Request.URL = buildURL(copiedConfig.BaseURL, copiedStep.Request.URL) // avoid data racing
+		copiedStep.Request.URL = buildURL(caseConfig.BaseURL, copiedStep.Request.URL) // avoid data racing
 		stepResult, err = r.runStepRequest(copiedStep)
 		if err != nil {
 			log.Error().Err(err).Msg("run request step failed")
@@ -484,7 +494,6 @@ func (r *caseRunner) parseConfig(config IConfig) error {
 		return err
 	}
 	cfg.Variables = parsedVariables
-
 	// parse config name
 	parsedName, err := parseString(cfg.Name, cfg.Variables)
 	if err != nil {

step_test.go

@@ -79,10 +79,10 @@ func TestRunRequestRun(t *testing.T) {
 		TestSteps: []IStep{stepGET, stepPOSTData},
 	}
 	runner := NewRunner(t).SetDebug(true).newCaseRunner(testcase)
-	if _, err := runner.runStep(0); err != nil {
+	if _, err := runner.runStep(0, testcase.Config.ToStruct()); err != nil {
 		t.Fatalf("tStep.Run() error: %s", err)
 	}
-	if _, err := runner.runStep(1); err != nil {
+	if _, err := runner.runStep(1, testcase.Config.ToStruct()); err != nil {
 		t.Fatalf("tStepPOSTData.Run() error: %s", err)
 	}
 }