Add option to support custom http client (#130)

- add WithHTTPClient as an option

Co-authored-by: Fidel Ruiz <[email protected]>

options.go

@@ -1,6 +1,9 @@
 package goshopify
 
-import "fmt"
+import (
+	"fmt"
+	"net/http"
+)
 
 // Option is used to configure client with options
 type Option func(c *Client)
@@ -28,3 +31,10 @@ func WithLogger(logger LeveledLoggerInterface) Option {
 		c.log = logger
 	}
 }
+
+// WithHTTPClient is used to set a custom http client
+func WithHTTPClient(client *http.Client) Option {
+	return func(c *Client) {
+		c.Client = client
+	}
+}

options_test.go

@@ -2,7 +2,9 @@ package goshopify
 
 import (
 	"fmt"
+	"net/http"
 	"testing"
+	"time"
 )
 
 func TestWithVersion(t *testing.T) {
@@ -61,3 +63,12 @@ func TestWithUnstableVersion(t *testing.T) {
 		t.Errorf("WithVersion client.pathPrefix = %s, expected %s", c.pathPrefix, expected)
 	}
 }
+
+func TestWithHTTPClient(t *testing.T) {
+	c := NewClient(app, "fooshop", "abcd", WithHTTPClient(&http.Client{Timeout: 30 * time.Second}))
+	expected := 30 * time.Second
+
+	if c.Client.Timeout.String() != expected.String() {
+		t.Errorf("WithVersion client.Client = %s, expected %s", c.Client.Timeout, expected)
+	}
+}