[go学习笔记]三十二、go语言如何开始你的单元测试？

示例代码请访问：github.com/wenjianzhan…

单元测试

functions.go

package testing

func square(op int) int {
	return op * op
}

functions_test.go

package testing

import "testing"

func TestSquare(t *testing.T) {
	inputs := [...]int{1, 2, 3}
	expected := [...]int{1, 4, 9}
	for i := 0; i < len(inputs); i++ {
		ret := square(inputs[i])
		if ret != expected[i] {
			t.Errorf("input is %d, the exoected is %d, the actual %d", inputs[i], expected[i], ret)
		}
	}
}

输出

=== RUN   TestSquare
--- PASS: TestSquare (0.00s)
PASS

Process finished with exit code 0

这里输出结果是正确的，和预期是一样的

内置单元测试框架

• Fail, Error: 该测试失败，该测试继续，其他测试继续执行
• FailNow, Fatal: 该测试失败，该测试中止，其他测试继续执行
• 代码覆盖率 go test -v -cover
• 断言 github.com/stretchr/te…

Fail, Error

func TestErrorInCode(t *testing.T) {
	fmt.Println("start")
	t.Error("Error")
	fmt.Println("End")
}

输出

=== RUN   TestErrorInCode
start
End
--- FAIL: TestErrorInCode (0.00s)
    functions_test.go:22: Error
FAIL

Process finished with exit code 1

FailNow, Fatal

func TestFailInCode(t *testing.T) {
	fmt.Println("start")
	t.Fatal("Fail")
	fmt.Println("End")
}

输出

=== RUN   TestFailInCode
start
--- FAIL: TestFailInCode (0.00s)
    functions_test.go:28: Fail
FAIL

Process finished with exit code 1

断言

func TestSquareWithAssert(t *testing.T) {
	inputs := [...]int{1, 2, 3}
	expected := [...]int{1, 4, 9}
	for i := 0; i < len(inputs); i++ {
		ret := square(inputs[i])
		assert.Equal(t, expected[i], ret)
		if ret != expected[i] {
			t.Errorf("input is %d, the exoected is %d, the actual %d", inputs[i], expected[i], ret)
		}
	}
}

输出

=== RUN   TestSquareWithAssert
--- PASS: TestSquareWithAssert (0.00s)
PASS

Process finished with exit code 0

示例代码请访问：github.com/wenjianzhan…