go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/common/proto/reflectutil/shallow_copy_test.go (about)

     1  // Copyright 2022 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package reflectutil
    16  
    17  import (
    18  	"testing"
    19  
    20  	. "github.com/smartystreets/goconvey/convey"
    21  	. "go.chromium.org/luci/common/testing/assertions"
    22  )
    23  
    24  func TestShallowCopy(t *testing.T) {
    25  	t.Parallel()
    26  
    27  	Convey(`ShallowCopy`, t, func() {
    28  		Convey(`nil`, func() {
    29  			msg := (*TestShallowCopyMessage)(nil)
    30  			newMsg := ShallowCopy(msg).(*TestShallowCopyMessage)
    31  			So(newMsg, ShouldBeNil)
    32  		})
    33  
    34  		Convey(`basic fields`, func() {
    35  			msg := &TestShallowCopyMessage{
    36  				Field: "hello",
    37  				RepeatedField: []string{
    38  					"this", "is", "a", "test",
    39  				},
    40  				MappedField: map[string]string{
    41  					"this": "is",
    42  					"a":    "test",
    43  				},
    44  			}
    45  			newMsg := ShallowCopy(msg).(*TestShallowCopyMessage)
    46  			So(newMsg, ShouldResembleProto, msg)
    47  
    48  			msg.RepeatedField[0] = "meepmorp"
    49  			So(newMsg.RepeatedField[0], ShouldEqual, "meepmorp")
    50  
    51  			msg.MappedField["this"] = "meepmorp"
    52  			So(newMsg.MappedField["this"], ShouldEqual, "meepmorp")
    53  		})
    54  
    55  		Convey(`msg fields`, func() {
    56  			msg := &TestShallowCopyMessage{
    57  				InnerMsg: &TestShallowCopyMessage_Inner{Field: "hello"},
    58  				RepeatedMsg: []*TestShallowCopyMessage_Inner{
    59  					{Field: "this"}, {Field: "is"}, {Field: "a"}, {Field: "test"},
    60  				},
    61  				MappedMsg: map[string]*TestShallowCopyMessage_Inner{
    62  					"this": {Field: "is"},
    63  					"a":    {Field: "test"},
    64  				},
    65  			}
    66  			newMsg := ShallowCopy(msg).(*TestShallowCopyMessage)
    67  			So(newMsg, ShouldResembleProto, msg)
    68  
    69  			msg.InnerMsg.Field = "meepmorp"
    70  			So(newMsg.InnerMsg.Field, ShouldEqual, "meepmorp")
    71  
    72  			msg.RepeatedMsg[0].Field = "meepmorp"
    73  			So(newMsg.RepeatedMsg[0].Field, ShouldEqual, "meepmorp")
    74  
    75  			msg.MappedMsg["this"].Field = "meepmorp"
    76  			So(newMsg.MappedMsg["this"].Field, ShouldEqual, "meepmorp")
    77  		})
    78  	})
    79  }