Examples of Go language functional testing and performance testing

This is a creation in Article, where the information may have evolved or changed. F:./SRC
└─hello
Hello.go

Hello_test.go

Hello.go

=========

Package Hello

Import"FMT"

FuncAdd (A, b int) (result int) {

  returnA + b

}

FuncMain (){

  FMT. Println ("Hello, World.  ") Hello, world! ")

  C: = ADD (1, 2)

  FMT. Println ("c=", c)

}

Hello_test.go

Package Hello

Import(

  "FMT"

  "Testing"

  "Time"

)

FuncTestAdd1 (t *testing. T) {

  FMT. Println ("Add Test")

  r: = ADD (1, 2)

  ifr! = 2 {//  this should be 3, deliberately changed to 2 test error scenario

  T.errorf ("Add (1, 2) failed. Got%d, expected 3. ", R)

    }

  FMT. PRINTLN ("Other test Tests")//Add additional tests

}

FuncBenchmarkAdd1 (b *testing. B) {

  FMT. Println ("Perform the Add Performance test")

  b.stoptimer ()  //Pause Timer

 time . Sleep (3)  //A lengthy preparatory work, such as reading a file

  B.starttimer ()//Turn on the timer, before the preparation time is not counted in the total time spent

For i: = 0; i < B.N; i++ {   

  Add (1, 2)

    }
   Fmt. PRINTLN ("Other test Tests")//Add additional tests
}
You can compile and run directly from the menu directly under Liteide.
The following is the form of the command line

C:/go/bin/go.exe test [F:/golang/test/src/hello]

C:/go/bin/go.exe test-test.bench=.* [F:/golang/test/src/hello]