whatcanGOwrong

go/pkg/mod/go.uber.org/atomic@v1.7.0/string_test.go

@@ -0,0 +1,85 @@
+// 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"
+	"encoding/xml"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestStringNoInitialValue(t *testing.T) {
+	atom := &String{}
+	require.Equal(t, "", atom.Load(), "Initial value should be blank string")
+}
+
+func TestString(t *testing.T) {
+	atom := NewString("")
+	require.Equal(t, "", atom.Load(), "Expected Load to return initialized value")
+
+	atom.Store("abc")
+	require.Equal(t, "abc", atom.Load(), "Unexpected value after Store")
+
+	atom = NewString("bcd")
+	require.Equal(t, "bcd", atom.Load(), "Expected Load to return initialized value")
+
+	t.Run("JSON/Marshal", func(t *testing.T) {
+		bytes, err := json.Marshal(atom)
+		require.NoError(t, err, "json.Marshal errored unexpectedly.")
+		require.Equal(t, []byte(`"bcd"`), bytes, "json.Marshal encoded the wrong bytes.")
+	})
+
+	t.Run("JSON/Unmarshal", func(t *testing.T) {
+		err := json.Unmarshal([]byte(`"abc"`), &atom)
+		require.NoError(t, err, "json.Unmarshal errored unexpectedly.")
+		require.Equal(t, "abc", 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)
+	})
+
+	atom = NewString("foo")
+
+	t.Run("XML/Marshal", func(t *testing.T) {
+		bytes, err := xml.Marshal(atom)
+		require.NoError(t, err, "xml.Marshal errored unexpectedly.")
+		require.Equal(t, []byte("<String>foo</String>"), bytes, "xml.Marshal encoded the wrong bytes.")
+	})
+
+	t.Run("XML/Unmarshal", func(t *testing.T) {
+		err := xml.Unmarshal([]byte("<String>bar</String>"), &atom)
+		require.NoError(t, err, "xml.Unmarshal errored unexpectedly.")
+		require.Equal(t, "bar", atom.Load(), "xml.Unmarshal didn't set the correct value.")
+	})
+
+	t.Run("String", func(t *testing.T) {
+		atom := NewString("foo")
+		assert.Equal(t, "foo", atom.String(),
+			"String() returned an unexpected value.")
+	})
+}