Notes Golang Test Case

This is a creation in Article, where the information may have evolved or changed.

1. Introduction

The go language comes with a lightweight test framework testing and its own go test commands for unit testing and performance testing.

2. Requirements

• The file name must end With ' _test.go ' so that it executes to the corresponding code when executing ' Go test '
• You must import ' testing ' this bag
• All test case functions must start with ' test '
• The tests are executed in the order in which they were written in the source code.
• The parameter of the test function ' testxxx () ' is ' testing. T ', we can use this type to log errors or test status
• Test format: ' Func testxxx (t *testing. T) ', ' Xxx ' section can be any combination of alphanumeric, but the first letter cannot be a lowercase letter [a-z], such as ' Testintdiv ' is the wrong function name.
• function, by calling ' testing. T ' Error ', ' Errorf ', ' failnow ', ' Fatal ', ' fatalif ' method, means that the test does not pass, and the call ' Log ' method is used to record the information of the test.

3. Case studies

Gotest.go

Package Gotestimport (    "errors") Func division (A, B float64) (Float64, Error) {    if0  {        return0, errors. New (" divisor cannot be 0")    }    return A/ B, nil}

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Gotest_test.go

Package Gotestimport ("Testing") func test_division_1 (t*testing. T) {ifI, E: = Division (6,2); I! =3|| E! =Nil {t.error ("The Division function test didn't pass .")    } Else{T.Log ("The first Test passes")}}func test_division_2 (t*testing. T) {T.error ("just don't pass .")}

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4. Stress testing

• The stress test case must follow the following format, where XXX can be a combination of any alphanumeric, but the first letter cannot be a lowercase letter
• Func benchmarkxxx (b *testing. B) {...}
• Go test does not perform the stress test function by default, if you want to perform a stress test with parameter-test.bench, syntax:-test.bench= "Test_name_regex", such as Go test-test.bench= ". *" Means testing all the stress test functions
• In the stress test case, remember to use testing in the loop body. B.N to allow the test to run correctly the file name must also end with _test.go

5. Case studies

Webbench_test.go

 package gotestimport (  " testing   ) func Benchmark_division (b  *testing. B) { for  I: = 0 ; i < B.N; I++ {Division ( 4 , 5  )}}func Benchmark_timeconsumingfunction (b  *testing. B) {B.stoptimer () B.starttimer ()  for  I: = 0 ; i < B.N; I++ {Division ( 4 , 5   

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Command line execution: Go.exe test-test.bench=.*