| // Copyright (c) 2016-2020 Uber Technologies, Inc. |
| // |
| // Permission is hereby granted, free of charge, to any person obtaining a copy |
| // of this software and associated documentation files (the "Software"), to deal |
| // in the Software without restriction, including without limitation the rights |
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| // copies of the Software, and to permit persons to whom the Software is |
| // furnished to do so, subject to the following conditions: |
| // |
| // The above copyright notice and this permission notice shall be included in |
| // all copies or substantial portions of the Software. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| // THE SOFTWARE. |
| |
| package atomic |
| |
| import ( |
| "encoding/json" |
| "testing" |
| "time" |
| |
| "github.com/stretchr/testify/assert" |
| "github.com/stretchr/testify/require" |
| ) |
| |
| func TestBool(t *testing.T) { |
| atom := NewBool(false) |
| require.False(t, atom.Toggle(), "Expected Toggle to return previous value.") |
| require.True(t, atom.Toggle(), "Expected Toggle to return previous value.") |
| require.False(t, atom.Toggle(), "Expected Toggle to return previous value.") |
| require.True(t, atom.Load(), "Unexpected state after swap.") |
| |
| require.True(t, atom.CAS(true, true), "CAS should swap when old matches") |
| require.True(t, atom.Load(), "CAS should have no effect") |
| require.True(t, atom.CAS(true, false), "CAS should swap when old matches") |
| require.False(t, atom.Load(), "CAS should have modified the value") |
| require.False(t, atom.CAS(true, false), "CAS should fail on old mismatch") |
| require.False(t, atom.Load(), "CAS should not have modified the value") |
| |
| atom.Store(false) |
| require.False(t, atom.Load(), "Unexpected state after store.") |
| |
| prev := atom.Swap(false) |
| require.False(t, prev, "Expected Swap to return previous value.") |
| |
| prev = atom.Swap(true) |
| require.False(t, prev, "Expected Swap to return previous value.") |
| |
| t.Run("JSON/Marshal", func(t *testing.T) { |
| atom.Store(true) |
| bytes, err := json.Marshal(atom) |
| require.NoError(t, err, "json.Marshal errored unexpectedly.") |
| require.Equal(t, []byte("true"), bytes, "json.Marshal encoded the wrong bytes.") |
| }) |
| |
| t.Run("JSON/Unmarshal", func(t *testing.T) { |
| err := json.Unmarshal([]byte("false"), &atom) |
| require.NoError(t, err, "json.Unmarshal errored unexpectedly.") |
| require.False(t, atom.Load(), "json.Unmarshal didn't set the correct value.") |
| }) |
| |
| t.Run("JSON/Unmarshal/Error", func(t *testing.T) { |
| err := json.Unmarshal([]byte("42"), &atom) |
| require.Error(t, err, "json.Unmarshal didn't error as expected.") |
| assertErrorJSONUnmarshalType(t, err, |
| "json.Unmarshal failed with unexpected error %v, want UnmarshalTypeError.", err) |
| }) |
| } |
| |
| func TestFloat64(t *testing.T) { |
| atom := NewFloat64(4.2) |
| |
| require.Equal(t, float64(4.2), atom.Load(), "Load didn't work.") |
| |
| require.True(t, atom.CAS(4.2, 0.5), "CAS didn't report a swap.") |
| require.Equal(t, float64(0.5), atom.Load(), "CAS didn't set the correct value.") |
| require.False(t, atom.CAS(0.0, 1.5), "CAS reported a swap.") |
| |
| atom.Store(42.0) |
| require.Equal(t, float64(42.0), atom.Load(), "Store didn't set the correct value.") |
| require.Equal(t, float64(42.5), atom.Add(0.5), "Add didn't work.") |
| require.Equal(t, float64(42.0), atom.Sub(0.5), "Sub didn't work.") |
| |
| t.Run("JSON/Marshal", func(t *testing.T) { |
| atom.Store(42.5) |
| bytes, err := json.Marshal(atom) |
| require.NoError(t, err, "json.Marshal errored unexpectedly.") |
| require.Equal(t, []byte("42.5"), bytes, "json.Marshal encoded the wrong bytes.") |
| }) |
| |
| t.Run("JSON/Unmarshal", func(t *testing.T) { |
| err := json.Unmarshal([]byte("40.5"), &atom) |
| require.NoError(t, err, "json.Unmarshal errored unexpectedly.") |
| require.Equal(t, float64(40.5), atom.Load(), "json.Unmarshal didn't set the correct value.") |
| }) |
| |
| t.Run("JSON/Unmarshal/Error", func(t *testing.T) { |
| err := json.Unmarshal([]byte("\"40.5\""), &atom) |
| require.Error(t, err, "json.Unmarshal didn't error as expected.") |
| assertErrorJSONUnmarshalType(t, err, |
| "json.Unmarshal failed with unexpected error %v, want UnmarshalTypeError.", err) |
| }) |
| } |
| |
| func TestDuration(t *testing.T) { |
| atom := NewDuration(5 * time.Minute) |
| |
| require.Equal(t, 5*time.Minute, atom.Load(), "Load didn't work.") |
| require.Equal(t, 6*time.Minute, atom.Add(time.Minute), "Add didn't work.") |
| require.Equal(t, 4*time.Minute, atom.Sub(2*time.Minute), "Sub didn't work.") |
| |
| require.True(t, atom.CAS(4*time.Minute, time.Minute), "CAS didn't report a swap.") |
| require.Equal(t, time.Minute, atom.Load(), "CAS didn't set the correct value.") |
| |
| require.Equal(t, time.Minute, atom.Swap(2*time.Minute), "Swap didn't return the old value.") |
| require.Equal(t, 2*time.Minute, atom.Load(), "Swap didn't set the correct value.") |
| |
| atom.Store(10 * time.Minute) |
| require.Equal(t, 10*time.Minute, atom.Load(), "Store didn't set the correct value.") |
| |
| t.Run("JSON/Marshal", func(t *testing.T) { |
| atom.Store(time.Second) |
| bytes, err := json.Marshal(atom) |
| require.NoError(t, err, "json.Marshal errored unexpectedly.") |
| require.Equal(t, []byte("1000000000"), bytes, "json.Marshal encoded the wrong bytes.") |
| }) |
| |
| t.Run("JSON/Unmarshal", func(t *testing.T) { |
| err := json.Unmarshal([]byte("1000000000"), &atom) |
| require.NoError(t, err, "json.Unmarshal errored unexpectedly.") |
| require.Equal(t, time.Second, atom.Load(), "json.Unmarshal didn't set the correct value.") |
| }) |
| |
| t.Run("JSON/Unmarshal/Error", func(t *testing.T) { |
| err := json.Unmarshal([]byte("\"1000000000\""), &atom) |
| require.Error(t, err, "json.Unmarshal didn't error as expected.") |
| assertErrorJSONUnmarshalType(t, err, |
| "json.Unmarshal failed with unexpected error %v, want UnmarshalTypeError.", err) |
| }) |
| } |
| |
| func TestValue(t *testing.T) { |
| var v Value |
| assert.Nil(t, v.Load(), "initial Value is not nil") |
| |
| v.Store(42) |
| assert.Equal(t, 42, v.Load()) |
| |
| v.Store(84) |
| assert.Equal(t, 84, v.Load()) |
| |
| assert.Panics(t, func() { v.Store("foo") }) |
| } |