如何在单元测试中处理New Server函数。

huangapple
go评论144阅读模式
英文:

how to handle New Server func in unit testing

问题

对于我来说，单元测试有一定的工作量，所以我使用gotests来生成样板测试代码。

server.go

  1. func NewServer(cfg *Config, l net.Listener, driver Driver, db store.Store) *Server {
  2. 	s := &Server{
  3. 		cfg:      cfg,
  4. 		listener: l,
  5. 		leader:   "",
  6. 		driver:   driver,
  7. 		db:       db,
  8. 	}
  10. 	s.server = &http.Server{
  11. 		Handler: s.createMux(),
  12. 	}
  14. 	return s
  15. }

使用gotests生成server_test.go：

  1. func TestNewServer(t *testing.T) {
  2. 	fakeCfg := &Config{
  3. 		Listen:   "hello",
  4. 		LogLevel: "debug",
  5. 	}
  6. 	type args struct {
  7. 		cfg    *Config
  8. 		l      net.Listener
  9. 		leader string
  10. 		driver Driver
  11. 		db     store.Store
  12. 	}
  13. 	tests := []struct {
  14. 		name string
  15. 		args args
  16. 		want *Server
  17. 	}{
  18. 		{
  19. 			name: "test",
  20. 			args: args{
  21. 				cfg: fakeCfg,
  22. 			},
  23. 			want: &Server{
  24. 				cfg: fakeCfg,
  25. 				server: &http.Server{
  26. 					Handler: nil,
  27. 				},
  28. 			},
  29. 		},
  30. 	}
  31. 	for _, tt := range tests {
  32. 		t.Run(tt.name, func(t *testing.T) {
  33. 			if got := NewServer(tt.args.cfg, tt.args.l, tt.args.driver, tt.args.db); !reflect.DeepEqual(got, tt.want) {
  34. 				t.Errorf("NewServer() = %v, want %v", got, tt.want)
  35. 			}
  36. 		})
  37. 	}
  38. }

单元测试结果：

  1. $ go test -v -run TestNewServer
  2. === RUN   TestNewServer
  3. === RUN   TestNewServer/test
  4. --- FAIL: TestNewServer (0.00s)
  5.     --- FAIL: TestNewServer/test (0.00s)
  6.         server_test.go:47: NewServer() = &{cfg:0xc4201f5580 listener:<nil> leader: server:0xc4201d6840 driver:<nil> db:<nil> Mutex:{state:0 sema:0}}, want &{cfg:0xc4201f5580 listener:<nil> leader: server:0xc4201d6790 driver:<nil> db:<nil> Mutex:{state:0 sema:0}}
  7. FAIL
  8. exit status 1
  9. FAIL    github.com/Dataman-Cloud/swan/api       0.017s

因为初始的server结构不是一步完成的，所以我无法在&Server{}部分正确获取server属性。

有人可以帮我一下，给我一个提示吗？如何在这种情况下编写测试？

英文:

for me , unit testing has workload. so i use gotests to generate Boilerplate testing code case.

server.go

  1.  func NewServer(cfg *Config, l net.Listener, driver Driver, db store.Store) *Server {
  2. 	s := &amp;Server{
  3. 		cfg:      cfg,
  4. 		listener: l,
  5. 		leader:   &quot;&quot;,
  6. 		driver:   driver,
  7. 		db:       db,
  8. 	}
  10. 	s.server = &amp;http.Server{
  11. 		Handler: s.createMux(),
  12. 	}
  14. 	return s
  15. }

gotests generate server_test.go:

  1. func TestNewServer(t *testing.T) {
  2. 	fakeCfg := &amp;Config{
  3. 		Listen:   &quot;hello&quot;,
  4. 		LogLevel: &quot;debug&quot;,
  5. 	}
  6. 	type args struct {
  7. 		cfg    *Config
  8. 		l      net.Listener
  9. 		leader string
  10. 		driver Driver
  11. 		db     store.Store
  12. 	}
  13. 	tests := []struct {
  14. 		name string
  15. 		args args
  16. 		want *Server
  17. 	}{
  18. 		{
  19. 			name: &quot;test&quot;,
  20. 			args: args{
  21. 				cfg: fakeCfg,
  22. 			},
  23. 			want: &amp;Server{
  24. 				cfg: fakeCfg,
  25. 				server: &amp;http.Server{
  26. 					Handler: nil,
  27. 				},
  28. 			},
  29. 		},
  30. 	}
  31. 	for _, tt := range tests {
  32. 		t.Run(tt.name, func(t *testing.T) {
  33. 			if got := NewServer(tt.args.cfg, tt.args.l, tt.args.driver, tt.args.db); !reflect.DeepEqual(got, tt.want) {
  34. 				t.Errorf(&quot;NewServer() = %v, want %v&quot;, got, tt.want)
  35. 			}
  36. 		})
  37. 	}
  38. }

unit test result:

  1. $ go test -v -run TestNewServer
  2. === RUN   TestNewServer
  3. === RUN   TestNewServer/test
  4. --- FAIL: TestNewServer (0.00s)
  5.     --- FAIL: TestNewServer/test (0.00s)
  6.         server_test.go:47: NewServer() = &amp;{cfg:0xc4201f5580 listener:&lt;nil&gt; leader: server:0xc4201d6840 driver:&lt;nil&gt; db:&lt;nil&gt; Mutex:{state:0 sema:0}}, want &amp;{cfg:0xc4201f5580 listener:&lt;nil&gt; leader: server:0xc4201d6790 driver:&lt;nil&gt; db:&lt;nil&gt; Mutex:{state:0 sema:0}}
  7. FAIL
  8. exit status 1
  9. FAIL    github.com/Dataman-Cloud/swan/api       0.017s

because the initial server struct is not one step. i can't correct get server attribute in &Server{} section.

anyone can do me a favor, give me a hint?howto write test on this situation?

答案1

得分: 2

你正在比较指针而不是值。

你应该将测试改为：

  1. !reflect.DeepEqual(*got, *tt.want)

然后你就在比较结构体的内容。

英文:

You are comparing the pointers and not the values.

You should change your test to:

  1. !reflect.DeepEqual(*got, *tt.want)

Then you are comparing the content of the structs.

答案2

得分: 0

最后，我进行了一个巧妙的测试，我手动组合了对象的每个元素。它运行得非常好。

英文:

finally i do a trick test, i manually compose every element of the object. it works like a charm.

huangapple
  • 本文由 发表于 2017年8月3日 15:59:34
  • 转载请务必保留本文链接：https://go.coder-hub.com/45478213.html
  • go
  • testing
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