remove support go 1.6 (#190)

* remove support go 1.6

* add subtests

* fix gofmt

* update changelog

* fix gofmt

Author: chemidy

CHANGELOG.md

@@ -1,5 +1,6 @@
 # Unreleased
 
+- [dropped] Dropped support for Go 1.8 and earlier.
 - [fixed] Fixing error handling in FCM. The SDK now checks the key 
   `type.googleapis.com/google.firebase.fcm.v1.FcmError` to set error code.
 - [added] `messaging.ApsAlert` type now supports subtitle in its payload.

auth/auth.go

@@ -23,7 +23,7 @@ import (
 
 	"google.golang.org/api/option"
 
-	"golang.org/x/net/context"
+	"context"
 
 	"firebase.google.com/go/internal"
 	"google.golang.org/api/identitytoolkit/v3"

auth/auth_appengine.go

@@ -17,8 +17,9 @@
 package auth
 
 import (
+	"context"
+
 	"firebase.google.com/go/internal"
-	"golang.org/x/net/context"
 
 	"google.golang.org/appengine"
 )

auth/auth_std.go

@@ -17,8 +17,9 @@
 package auth // import "firebase.google.com/go/auth"
 
 import (
+	"context"
+
 	"firebase.google.com/go/internal"
-	"golang.org/x/net/context"
 )
 
 func newCryptoSigner(ctx context.Context, conf *internal.AuthConfig) (cryptoSigner, error) {

auth/auth_test.go

@@ -25,7 +25,7 @@ import (
 	"testing"
 	"time"
 
-	"golang.org/x/net/context"
+	"context"
 
 	"golang.org/x/oauth2/google"
 
@@ -205,10 +205,12 @@ func TestCustomTokenError(t *testing.T) {
 	}
 
 	for _, tc := range cases {
-		token, err := client.CustomTokenWithClaims(ctx, tc.uid, tc.claims)
-		if token != "" || err == nil {
-			t.Errorf("CustomTokenWithClaims(%q) = (%q, %v); want = (\"\", error)", tc.name, token, err)
-		}
+		t.Run(tc.name, func(t *testing.T) {
+			token, err := client.CustomTokenWithClaims(ctx, tc.uid, tc.claims)
+			if token != "" || err == nil {
+				t.Errorf("CustomTokenWithClaims(%q) = (%q, %v); want = (\"\", error)", tc.name, token, err)
+			}
+		})
 	}
 }
 
@@ -321,9 +323,11 @@ func TestVerifyIDTokenError(t *testing.T) {
 	}
 
 	for _, tc := range cases {
-		if _, err := client.VerifyIDToken(ctx, tc.token); err == nil {
-			t.Errorf("VerifyIDToken(%q) = nil; want error", tc.name)
-		}
+		t.Run(tc.name, func(t *testing.T) {
+			if _, err := client.VerifyIDToken(ctx, tc.token); err == nil {
+				t.Errorf("VerifyIDToken(%q) = nil; want error", tc.name)
+			}
+		})
 	}
 }
 

auth/token_generator.go

@@ -32,7 +32,7 @@ import (
 	"firebase.google.com/go/internal"
 	"google.golang.org/api/transport"
 
-	"golang.org/x/net/context"
+	"context"
 )
 
 type jwtHeader struct {

auth/token_generator_test.go

@@ -28,7 +28,7 @@ import (
 	"firebase.google.com/go/internal"
 	"google.golang.org/api/option"
 
-	"golang.org/x/net/context"
+	"context"
 )
 
 func TestEncodeToken(t *testing.T) {

auth/token_verifier.go

@@ -32,8 +32,7 @@ import (
 	"sync"
 	"time"
 
-	"golang.org/x/net/context"
-	"golang.org/x/net/context/ctxhttp"
+	"context"
 )
 
 // keySource is used to obtain a set of public keys, which can be used to verify cryptographic
@@ -89,7 +88,7 @@ func (k *httpKeySource) refreshKeys(ctx context.Context) error {
 		return err
 	}
 
-	resp, err := ctxhttp.Do(ctx, k.HTTPClient, req)
+	resp, err := k.HTTPClient.Do(req.WithContext(ctx))
 	if err != nil {
 		return err
 	}

auth/user_mgt.go

@@ -24,8 +24,9 @@ import (
 	"strings"
 	"time"
 
+	"context"
+
 	"firebase.google.com/go/internal"
-	"golang.org/x/net/context"
 
 	"google.golang.org/api/googleapi"
 	"google.golang.org/api/identitytoolkit/v3"

auth/user_mgt_test.go

@@ -27,7 +27,7 @@ import (
 	"testing"
 	"time"
 
-	"golang.org/x/net/context"
+	"context"
 
 	"firebase.google.com/go/internal"