test: add test cases for interceptor feature.

interceptor_test.go

@@ -0,0 +1,126 @@
+package request
+
+import (
+	"errors"
+	"net/http"
+	"testing"
+
+	"github.com/ghosind/go-assert"
+)
+
+func TestAddInterceptors(t *testing.T) {
+	a := assert.New(t)
+
+	reqInterIds := UseRequestInterceptor(func(r *http.Request) error {
+		// just a test interceptor
+		return nil
+	}, nil, func(r *http.Request) error {
+		// just a test interceptor
+		return nil
+	})
+	respInterIds := UseResponseInterceptor(func(r *http.Response) error {
+		// just a test interceptor
+		return nil
+	}, nil, func(r *http.Response) error {
+		// just a test interceptor
+		return nil
+	})
+	a.TrueNow(len(reqInterIds) == 3)
+	a.TrueNow(len(respInterIds) == 3)
+	a.EqualNow(len(defaultClient.reqInterceptors), 2)
+	a.EqualNow(len(defaultClient.respInterceptors), 2)
+
+	for _, id := range reqInterIds {
+		ok := RemoveRequestInterceptor(id)
+		a.EqualNow(ok, id != 0)
+	}
+	for _, id := range respInterIds {
+		ok := RemoveResponseInterceptor(id)
+		a.EqualNow(ok, id != 0)
+	}
+
+	// Remove again, should be all fail
+	for _, id := range reqInterIds {
+		ok := RemoveRequestInterceptor(id)
+		a.NotTrueNow(ok)
+	}
+	for _, id := range respInterIds {
+		ok := RemoveResponseInterceptor(id)
+		a.NotTrueNow(ok)
+	}
+}
+
+func TestRequestWithInterceptors(t *testing.T) {
+	a := assert.New(t)
+
+	reqIntercepted := false
+	respIntercepted := false
+
+	reqInterId := UseRequestInterceptor(func(r *http.Request) error {
+		reqIntercepted = true
+		return nil
+	})
+	respInterId := UseResponseInterceptor(func(r *http.Response) error {
+		respIntercepted = true
+		return nil
+	})
+	a.TrueNow(len(reqInterId) == 1)
+	a.TrueNow(len(respInterId) == 1)
+
+	_, err := Request("http://localhost:8080")
+	a.NilNow(err)
+	a.TrueNow(reqIntercepted)
+	a.TrueNow(respIntercepted)
+
+	ok := RemoveRequestInterceptor(reqInterId[0])
+	a.TrueNow(ok)
+	ok = RemoveResponseInterceptor(respInterId[0])
+	a.TrueNow(ok)
+}
+
+func TestRequestInterceptorFailure(t *testing.T) {
+	a := assert.New(t)
+
+	reqIntercepted := false
+
+	reqInterIds := UseRequestInterceptor(func(r *http.Request) error {
+		return errors.New("expected error")
+	}, func(r *http.Request) error {
+		reqIntercepted = true
+		return nil
+	})
+	a.TrueNow(len(reqInterIds) == 2)
+
+	_, err := Request("http://localhost:8080")
+	a.NotNilNow(err)
+	a.EqualNow(err.Error(), "expected error")
+	a.NotTrueNow(reqIntercepted)
+
+	for _, id := range reqInterIds {
+		RemoveRequestInterceptor(id)
+	}
+}
+
+func TestResponseInterceptorFailure(t *testing.T) {
+	a := assert.New(t)
+
+	respIntercepted := false
+
+	respInterIds := UseResponseInterceptor(func(r *http.Response) error {
+		return errors.New("expected error")
+	}, func(r *http.Response) error {
+		respIntercepted = true
+		return nil
+	})
+	a.TrueNow(len(respInterIds) == 2)
+
+	resp, err := Request("http://localhost:8080")
+	a.NotNilNow(err)
+	a.EqualNow(err.Error(), "expected error")
+	a.NotNilNow(resp)
+	a.NotTrueNow(respIntercepted)
+
+	for _, id := range respInterIds {
+		RemoveResponseInterceptor(id)
+	}
+}