diff --git a/examples/extract_test.go b/examples/extract_test.go
index 6f5d5dc2..5a7c05e0 100644
--- a/examples/extract_test.go
+++ b/examples/extract_test.go
@@ -1,4 +1,4 @@
-package postman_echo
+package examples
 
 import (
 	"testing"
diff --git a/examples/validate_test.go b/examples/validate_test.go
new file mode 100644
index 00000000..4f25c128
--- /dev/null
+++ b/examples/validate_test.go
@@ -0,0 +1,58 @@
+package examples
+
+import (
+	"testing"
+
+	"github.com/httprunner/httpboomer"
+)
+
+func TestCaseValidateStep(t *testing.T) {
+	testcase := &httpboomer.TestCase{
+		Config: httpboomer.TConfig{
+			Name:    "run request with variables",
+			BaseURL: "https://postman-echo.com",
+			Verify:  false,
+		},
+		TestSteps: []httpboomer.IStep{
+			httpboomer.Step("get with params").
+				WithVariables(map[string]interface{}{
+					"var1":               "bar1",
+					"agent":              "HttpBoomer",
+					"expectedStatusCode": 200,
+				}).
+				GET("/get").
+				WithParams(map[string]interface{}{"foo1": "$var1", "foo2": "bar2"}).
+				WithHeaders(map[string]string{"User-Agent": "$agent"}).
+				Extract().
+				WithJmesPath("body.args.foo1", "varFoo1").
+				Validate().
+				AssertEqual("status_code", "$expectedStatusCode", "check status code").                                  // assert status code
+				AssertEqual("headers.Connection", "keep-alive", "check header Connection").                              // assert response header
+				AssertEqual("headers.\"Content-Type\"", "application/json; charset=utf-8", "check header Content-Type"). // assert response header, with double quotes
+				AssertEqual("body.args.foo1", "bar1", "check args foo1").                                                // assert response json body with jmespath
+				AssertEqual("body.args.foo2", "bar2", "check args foo2").
+				AssertEqual("body.headers.\"user-agent\"", "HttpBoomer", "check header user agent"),
+			httpboomer.Step("get with params").
+				WithVariables(map[string]interface{}{
+					"var1":  "bar1",
+					"agent": "HttpBoomer",
+				}).
+				GET("/get").
+				WithParams(map[string]interface{}{"foo1": "$var1", "foo2": "bar2"}).
+				WithHeaders(map[string]string{"User-Agent": "$agent"}).
+				Extract().
+				WithJmesPath("status_code", "statusCode").
+				WithJmesPath("headers.\"Content-Type\"", "contentType").
+				Validate().
+				AssertEqual("$statusCode", 200, "check status code").                                        // assert with extracted variable from current step
+				AssertEqual("$contentType", "application/json; charset=utf-8", "check header Content-Type"). // assert with extracted variable from current step
+				AssertEqual("$varFoo1", "bar1", "check args foo1").                                          // assert with extracted variable from previous step
+				AssertEqual("body.args.foo2", "bar2", "check args foo2"),                                    // assert response json body with jmespath
+		},
+	}
+
+	err := httpboomer.Test(t, testcase)
+	if err != nil {
+		t.Fatalf("run testcase error: %v", err)
+	}
+}
diff --git a/examples/variables_test.go b/examples/variables_test.go
index 0f94cd03..f3df328a 100644
--- a/examples/variables_test.go
+++ b/examples/variables_test.go
@@ -1,4 +1,4 @@
-package postman_echo
+package examples
 
 import (
 	"testing"