Update dependencies

vendor/google.golang.org/grpc/metadata/metadata_test.go

@@ -0,0 +1,71 @@
+/*
+ *
+ * Copyright 2014 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package metadata
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestPairsMD(t *testing.T) {
+	for _, test := range []struct {
+		// input
+		kv []string
+		// output
+		md MD
+	}{
+		{[]string{}, MD{}},
+		{[]string{"k1", "v1", "k1", "v2"}, MD{"k1": []string{"v1", "v2"}}},
+	} {
+		md := Pairs(test.kv...)
+		if !reflect.DeepEqual(md, test.md) {
+			t.Fatalf("Pairs(%v) = %v, want %v", test.kv, md, test.md)
+		}
+	}
+}
+
+func TestCopy(t *testing.T) {
+	const key, val = "key", "val"
+	orig := Pairs(key, val)
+	copy := orig.Copy()
+	if !reflect.DeepEqual(orig, copy) {
+		t.Errorf("copied value not equal to the original, got %v, want %v", copy, orig)
+	}
+	orig[key][0] = "foo"
+	if v := copy[key][0]; v != val {
+		t.Errorf("change in original should not affect copy, got %q, want %q", v, val)
+	}
+}
+
+func TestJoin(t *testing.T) {
+	for _, test := range []struct {
+		mds  []MD
+		want MD
+	}{
+		{[]MD{}, MD{}},
+		{[]MD{Pairs("foo", "bar")}, Pairs("foo", "bar")},
+		{[]MD{Pairs("foo", "bar"), Pairs("foo", "baz")}, Pairs("foo", "bar", "foo", "baz")},
+		{[]MD{Pairs("foo", "bar"), Pairs("foo", "baz"), Pairs("zip", "zap")}, Pairs("foo", "bar", "foo", "baz", "zip", "zap")},
+	} {
+		md := Join(test.mds...)
+		if !reflect.DeepEqual(md, test.want) {
+			t.Errorf("context's metadata is %v, want %v", md, test.want)
+		}
+	}
+}