Merge pull request #236 from dbican-gpsw/master

Add GetSubscriptionOffer method to IABMonetization for `monetization.subscriptions` API

playstore/validator.go

@@ -18,7 +18,7 @@ import (
 	androidpublisher "google.golang.org/api/androidpublisher/v3"
 )
 
-//go:generate mockgen  -destination=mocks/playstore.go -package=mocks github.com/awa/go-iap/playstore IABProduct,IABSubscription
+//go:generate mockgen  -destination=mocks/playstore.go -package=mocks github.com/awa/go-iap/playstore IABProduct,IABSubscription,IABMonetization
 
 // The IABProduct type is an interface for product service
 type IABProduct interface {
@@ -36,6 +36,11 @@ type IABSubscription interface {
 	RevokeSubscription(context.Context, string, string, string) error
 }
 
+// The IABMonetization type is an interface for monetization service
+type IABMonetization interface {
+	GetSubscriptionOffer(context.Context, string, string, string, string) (*androidpublisher.SubscriptionOffer, error)
+}
+
 // The Client type implements VerifySubscription method
 type Client struct {
 	service *androidpublisher.Service
@@ -196,6 +201,19 @@ func (c *Client) RevokeSubscription(ctx context.Context, packageName string, sub
 	return err
 }
 
+// GetSubscriptionOffer reads a single subscription offer.
+func (c *Client) GetSubscriptionOffer(ctx context.Context,
+	packageName string,
+	productID string,
+	basePlanID string,
+	offerID string,
+) (*androidpublisher.SubscriptionOffer, error) {
+	ps := androidpublisher.NewMonetizationSubscriptionsBasePlansOffersService(c.service)
+	result, err := ps.Get(packageName, productID, basePlanID, offerID).Context(ctx).Do()
+
+	return result, err
+}
+
 type VoidedPurchaseType int64
 
 const (

playstore/validator_test.go

@@ -252,6 +252,22 @@ func TestRevokeSubscription(t *testing.T) {
 	// TODO Normal scenario
 }
 
+func TestGetSubscriptionOffer(t *testing.T) {
+	t.Parallel()
+	// Exception scenario
+	expected := "googleapi: Error 404: Package not found: package., notFound"
+
+	client, _ := New(jsonKey)
+	ctx := context.Background()
+	_, err := client.GetSubscriptionOffer(ctx, "package", "productID", "basePlanID", "offerID")
+
+	if err == nil || err.Error() != expected {
+		t.Errorf("got %v", err)
+	}
+
+	// TODO Normal scenario
+}
+
 func TestVerifySignature(t *testing.T) {
 	t.Parallel()
 	receipt := []byte(`{"orderId":"GPA.xxxx-xxxx-xxxx-xxxxx","packageName":"my.package","productId":"myproduct","purchaseTime":1437564796303,"purchaseState":0,"developerPayload":"user001","purchaseToken":"some-token"}`)