基礎測試

main.go：

package main

import (
    "fmt"
)

func main() {
    fmt.Println(Sum(4,5))
}

func Sum(a, b int) int {
    return a + b
}

main_test.go：

package main

import (
    "testing"
)

// Test methods start with `Test`
func TestSum(t *testing.T) {
    got := Sum(1, 2)
    want := 3
    if got != want {
        t.Errorf("Sum(1, 2) == %d, want %d", got, want)
    }
}

要執行測試，只需使用 go test 命令：

$ go test
ok      test_app    0.005s

使用 -v 標誌檢視每個測試的結果：

$ go test -v
=== RUN   TestSum
--- PASS: TestSum (0.00s)
PASS
ok      _/tmp    0.000s

使用路徑 ./... 遞迴測試子目錄：

$ go test -v ./...
ok      github.com/me/project/dir1    0.008s
=== RUN   TestSum
--- PASS: TestSum (0.00s)
PASS
ok      github.com/me/project/dir2    0.008s
=== RUN   TestDiff
--- PASS: TestDiff (0.00s)
PASS

執行特定測試：
如果有多個測試並且你想要執行特定測試，可以這樣做：

go test -v -run=<TestName> // will execute only test with this name

例：

go test -v run=TestSum