mirror of
https://github.com/ceph/ceph-csi.git
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126 lines
3.4 KiB
Go
126 lines
3.4 KiB
Go
/*
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*
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* Copyright 2014 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package metadata
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import (
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"reflect"
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"testing"
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"golang.org/x/net/context"
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)
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func TestPairsMD(t *testing.T) {
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for _, test := range []struct {
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// input
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kv []string
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// output
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md MD
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}{
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{[]string{}, MD{}},
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{[]string{"k1", "v1", "k1", "v2"}, MD{"k1": []string{"v1", "v2"}}},
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} {
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md := Pairs(test.kv...)
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if !reflect.DeepEqual(md, test.md) {
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t.Fatalf("Pairs(%v) = %v, want %v", test.kv, md, test.md)
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}
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}
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}
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func TestCopy(t *testing.T) {
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const key, val = "key", "val"
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orig := Pairs(key, val)
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copy := orig.Copy()
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if !reflect.DeepEqual(orig, copy) {
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t.Errorf("copied value not equal to the original, got %v, want %v", copy, orig)
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}
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orig[key][0] = "foo"
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if v := copy[key][0]; v != val {
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t.Errorf("change in original should not affect copy, got %q, want %q", v, val)
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}
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}
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func TestJoin(t *testing.T) {
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for _, test := range []struct {
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mds []MD
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want MD
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}{
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{[]MD{}, MD{}},
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{[]MD{Pairs("foo", "bar")}, Pairs("foo", "bar")},
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{[]MD{Pairs("foo", "bar"), Pairs("foo", "baz")}, Pairs("foo", "bar", "foo", "baz")},
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{[]MD{Pairs("foo", "bar"), Pairs("foo", "baz"), Pairs("zip", "zap")}, Pairs("foo", "bar", "foo", "baz", "zip", "zap")},
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} {
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md := Join(test.mds...)
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if !reflect.DeepEqual(md, test.want) {
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t.Errorf("context's metadata is %v, want %v", md, test.want)
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}
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}
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}
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func TestAppendToOutgoingContext(t *testing.T) {
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// Pre-existing metadata
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ctx := NewOutgoingContext(context.Background(), Pairs("k1", "v1", "k2", "v2"))
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ctx = AppendToOutgoingContext(ctx, "k1", "v3")
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ctx = AppendToOutgoingContext(ctx, "k1", "v4")
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md, ok := FromOutgoingContext(ctx)
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if !ok {
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t.Errorf("Expected MD to exist in ctx, but got none")
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}
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want := Pairs("k1", "v1", "k1", "v3", "k1", "v4", "k2", "v2")
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if !reflect.DeepEqual(md, want) {
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t.Errorf("context's metadata is %v, want %v", md, want)
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}
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// No existing metadata
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ctx = AppendToOutgoingContext(context.Background(), "k1", "v1")
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md, ok = FromOutgoingContext(ctx)
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if !ok {
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t.Errorf("Expected MD to exist in ctx, but got none")
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}
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want = Pairs("k1", "v1")
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if !reflect.DeepEqual(md, want) {
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t.Errorf("context's metadata is %v, want %v", md, want)
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}
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}
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// Old/slow approach to adding metadata to context
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func Benchmark_AddingMetadata_ContextManipulationApproach(b *testing.B) {
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for n := 0; n < b.N; n++ {
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ctx := context.Background()
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md, _ := FromOutgoingContext(ctx)
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NewOutgoingContext(ctx, Join(Pairs("k1", "v1", "k2", "v2"), md))
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}
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}
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// Newer/faster approach to adding metadata to context
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func BenchmarkAppendToOutgoingContext(b *testing.B) {
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for n := 0; n < b.N; n++ {
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AppendToOutgoingContext(context.Background(), "k1", "v1", "k2", "v2")
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}
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}
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func BenchmarkFromOutgoingContext(b *testing.B) {
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ctx := context.Background()
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ctx = NewOutgoingContext(ctx, MD{"k3": {"v3", "v4"}})
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ctx = AppendToOutgoingContext(ctx, "k1", "v1", "k2", "v2")
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for n := 0; n < b.N; n++ {
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FromOutgoingContext(ctx)
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}
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}
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