go语言单元

最新推荐文章于 2024-12-20 15:15:27 发布

原创最新推荐文章于 2024-12-20 15:15:27 发布 · 533 阅读

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本文介绍了Go语言的单元测试，包括使用内置的testing包、Goconvey库以及GoStub进行测试和打桩方法。通过示例展示了如何创建测试用例、断言以及自定义诊断，并提供了对函数和库函数打桩的示例。

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用到的组件
Testing
Goconvey
GoStub
自带的testing
go test会自动执行xxx_test.go中的Testxxx的函数
如a_test.go中的
func Testxxx(t *testing.T) {
}
Goconvey
用Convey来创建测试用例
如Convey(“Test xxxx function”, t, func() {
…
})
在Convey中使用So来做诊断
如So(var, ShouldEqual, 1)
标准的assertion
So(thing1, ShouldEqual, thing2)
So(thing1, ShouldNotEqual, thing2)
So(thing1, ShouldResemble, thing2) // a deep equals for arrays, slices, maps, and structs
So(thing1, ShouldNotResemble, thing2)
So(thing1, ShouldPointTo, thing2)
So(thing1, ShouldNotPointTo, thing2)
So(thing1, ShouldBeNil)
So(thing1, ShouldNotBeNil)
So(thing1, ShouldBeTrue)
So(thing1, ShouldBeFalse)
So(thing1, ShouldBeZeroValue)

So(1, ShouldBeGreaterThan, 0)
So(1, ShouldBeGreaterThanOrEqualTo, 0)
So(1, ShouldBeLessThan, 2)
So(1, ShouldBeLessThanOrEqualTo, 2)
So(1.1, ShouldBeBetween, .8, 1.2)
So(1.1, ShouldNotBeBetween, 2, 3)
So(1.1, ShouldBeBetweenOrEqual, .9, 1.1)
So(1.1, ShouldNotBeBetweenOrEqual, 1000, 2000)
So(1.0, ShouldAlmostEqual, 0.99999999, .0001) // tolerance is optional; default 0.0000000001
So(1.0, ShouldNotAlmostEqual, 0.9, .0001)

So([]int{2, 4, 6}, ShouldContain, 4)
So([]int{2, 4, 6}, ShouldNotContain, 5)
So(4, ShouldBeIn, …[]int{2, 4, 6})
So(4, ShouldNotBeIn, …[]int{1, 3, 5})
So([]int{}, ShouldBeEmpty)
So([]int{1}, ShouldNotBeEmpty)
So(map[string]string{“a”: “b”}, ShouldContainKey, “a”)
So(map[string]string{“a”: “b”}, ShouldNotContainKey, “b”)
So(map[string]string{“a”: “b”}, ShouldNotBeEmpty)
So(map[string]string{}, ShouldBeEmpty)
So(map[string]string{“a”: “b”}, ShouldHaveLength, 1) // supports map, slice, chan,

So(“asdf”, ShouldStartWith, “as”)
So(“asdf”, ShouldNotStartWith, “df”)
So(“asdf”, ShouldEndWith, “df”)
So(“asdf”, ShouldNotEndWith, “df”)
So(“asdf”, ShouldContainSubstring, “sd”) // optional ‘expected occurences’ arguments?
So(“asdf”, ShouldNotContainSubstring, “er”)
So(“adsf”, ShouldBeBlank)
So(“asdf”, ShouldNotBeBlank)

参考https://github.com/smartystreets/goconvey/wiki/Assertions

自定义诊断
func should(actual interface{}, expected …interface{}) string {
if <some-important-condition-is-met(actual, expected)> {
return “” // empty string means the assertion passed
} else {
return “

Convey(“All caps always makes text more meaningful”, func() {
So(“BOO!”, shouldScareGophersMoreThan, “boo”)
})

打桩方法
使用gostub打桩
对于变量直接使用
xxxstub := Stub (&xxx, yyy)
defer xxxstub.Reset()

对于函数的打桩
var Exec = func(xxx,xxx)(string, error) {
}
execstub := Stub(&Exec, func())(string, error) {})
execstub.Reset()

对于库函数的stub
var Stat = os.Stat
然后stub