package metadata import ( "testing" "golang.org/x/net/context" ) func TestMetadataContext(t *testing.T) { md := Metadata{ "foo": "bar", } ctx := NewContext(context.TODO(), md) emd, ok := FromContext(ctx) if !ok { t.Errorf("Unexpected error retrieving metadata, got %t", ok) } if emd["foo"] != md["foo"] { t.Errorf("Expected key: %s val: %s, got key: %s val: %s", "foo", md["foo"], "foo", emd["foo"]) } if i := len(emd); i != 1 { t.Errorf("Expected metadata length 1 got %d", i) } }