Example for httpresponse error (#15598)

sdk/azcore/example_test.go

@@ -8,11 +8,16 @@
 package azcore_test
 
 import (
+	"context"
 	"encoding/json"
+	"errors"
 	"fmt"
+	"io/ioutil"
+	"net/http"
 
 	"github.com/Azure/azure-sdk-for-go/sdk/azcore"
 	"github.com/Azure/azure-sdk-for-go/sdk/azcore/log"
+	"github.com/Azure/azure-sdk-for-go/sdk/azcore/runtime"
 )
 
 // false positive by linter
@@ -58,3 +63,25 @@ func ExampleNullValue() {
 	// Output:
 	// {"count":null}
 }
+
+func ExampleHTTPResponse() {
+	pipeline := runtime.NewPipeline(http.DefaultClient)
+	req, err := runtime.NewRequest(context.Background(), "POST", "https://fakecontainerregisty.azurecr.io/acr/v1/nonexisteng/_tags")
+	if err != nil {
+		panic(err)
+	}
+	resp, err := pipeline.Do(req)
+	var httpErr azcore.HTTPResponse
+	if errors.As(err, &httpErr) {
+		// Handle Error
+		if httpErr.RawResponse().StatusCode == http.StatusNotFound {
+			fmt.Printf("Repository could not be found: %v", httpErr.RawResponse())
+		} else if httpErr.RawResponse().StatusCode == http.StatusForbidden {
+			fmt.Printf("You do not have permission to access this repository: %v", httpErr.RawResponse())
+		} else {
+			// ...
+		}
+	}
+	// Do something with response
+	fmt.Println(ioutil.ReadAll(resp.Body))
+}