mirror of
https://github.com/gravitational/teleport.git
synced 2026-11-02 14:59:53 +08:00
121 lines
2.9 KiB
Go
121 lines
2.9 KiB
Go
/*
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Copyright 2022 Gravitational, Inc.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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package utils
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import (
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"bytes"
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"fmt"
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"testing"
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"github.com/stretchr/testify/require"
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"github.com/gravitational/teleport/api/internalutils/stream"
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"github.com/gravitational/teleport/api/types"
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)
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// TestMarshalMapConsistency ensures serialized byte comparisons succeed
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// after multiple serialize/deserialize round trips. Some JSON marshaling
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// backends don't sort map keys for performance reasons, which can make
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// operations that depend on the byte ordering fail (e.g. CompareAndSwap).
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func TestMarshalMapConsistency(t *testing.T) {
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t.Parallel()
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value := map[string]string{
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types.TeleportNamespace + "/foo": "1234",
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types.TeleportNamespace + "/bar": "5678",
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}
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compareTo, err := FastMarshal(value)
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require.NoError(t, err)
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for i := 0; i < 100; i++ {
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roundTrip := make(map[string]string)
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err := FastUnmarshal(compareTo, &roundTrip)
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require.NoError(t, err)
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val, err := FastMarshal(roundTrip)
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require.NoError(t, err)
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require.Truef(t, bytes.Equal(val, compareTo), "maps must serialize consistently (attempt %d)", i)
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}
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}
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type testObj struct {
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S string `json:"s"`
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N int `json:"n"`
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}
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func TestStreamJSONArray(t *testing.T) {
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objects := []testObj{
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{"spam", 1},
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{"eggs", 2},
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{"zero", 0},
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{"five", 5},
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{"", 100},
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{},
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{"neg", -100},
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}
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var objBuf bytes.Buffer
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err := StreamJSONArray(stream.Slice(objects), &objBuf, true)
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require.NoError(t, err)
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var objOut []testObj
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err = FastUnmarshal(objBuf.Bytes(), &objOut)
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require.NoError(t, err)
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require.Equal(t, objects, objOut)
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numbers := []int{
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0,
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-1,
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12,
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15,
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1000,
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0,
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1,
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}
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var numBuf bytes.Buffer
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err = StreamJSONArray(stream.Slice(numbers), &numBuf, false)
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require.NoError(t, err)
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var numOut []int
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err = FastUnmarshal(numBuf.Bytes(), &numOut)
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require.NoError(t, err)
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require.Equal(t, numbers, numOut)
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var iterative []string
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for i := 0; i < 100; i++ {
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var iterBuf bytes.Buffer
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err = StreamJSONArray(stream.Slice(iterative), &iterBuf, false)
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require.NoError(t, err)
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var iterOut []string
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err = FastUnmarshal(iterBuf.Bytes(), &iterOut)
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require.NoError(t, err)
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if len(iterative) == 0 {
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require.Len(t, iterOut, 0)
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} else {
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require.Equal(t, iterative, iterOut)
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}
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// we add at the end of the loop so that this test case
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// covers the empty slice case.
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iterative = append(iterative, fmt.Sprintf("%d", i))
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}
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}
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