fcb7ed1e69
Support serializing and deserializing atomic objects to/from JSON using
the JSON representation of the underlying types. Without this,
marshaling returns `{}`.
Per discussion in #68, `atomic.Value` does not yet implement support
because there's an open question as to whether it should implement it
even if the underlying type doesn't support JSON marshaling/
unmarshaling.
Resolves #49
59 lines
2.3 KiB
Go
59 lines
2.3 KiB
Go
// Copyright (c) 2016 Uber Technologies, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package atomic
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import (
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"encoding/json"
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"errors"
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"testing"
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"github.com/stretchr/testify/require"
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)
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func TestStringNoInitialValue(t *testing.T) {
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atom := &String{}
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require.Equal(t, "", atom.Load(), "Initial value should be blank string")
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}
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func TestString(t *testing.T) {
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atom := NewString("")
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require.Equal(t, "", atom.Load(), "Expected Load to return initialized value")
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atom.Store("abc")
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require.Equal(t, "abc", atom.Load(), "Unexpected value after Store")
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atom = NewString("bcd")
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require.Equal(t, "bcd", atom.Load(), "Expected Load to return initialized value")
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bytes, err := json.Marshal(atom)
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require.NoError(t, err, "json.Marshal errored unexpectedly.")
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require.Equal(t, []byte("\"bcd\""), bytes, "json.Marshal encoded the wrong bytes.")
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err = json.Unmarshal([]byte("\"abc\""), &atom)
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require.NoError(t, err, "json.Unmarshal errored unexpectedly.")
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require.Equal(t, "abc", atom.Load(), "json.Unmarshal didn't set the correct value.")
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err = json.Unmarshal([]byte("42"), &atom)
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require.Error(t, err, "json.Unmarshal didn't error as expected.")
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require.True(t, errors.As(err, new(*json.UnmarshalTypeError)),
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"json.Unmarshal failed with unexpected error %v, want UnmarshalTypeError.", err)
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}
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