测试与调试

1package main
2 
3import "testing"
4 
5func Add(a, b int) int {
6    return a + b
7}
8 
9func TestAdd(t *testing.T) {
10    result := Add(2, 3)
11    expected := 5
12    
13    if result != expected {
14        t.Errorf("Add(2, 3) = %d; want %d", result, expected)
15    }
16}
17 
18// 表驱动测试
19func TestAddTableDriven(t *testing.T) {
20    tests := []struct {
21        name     string
22        a, b     int
23        expected int
24    }{
25        {"positive", 2, 3, 5},
26        {"negative", -1, -2, -3},
27        {"zero", 0, 0, 0},
28    }
29    
30    for _, tt := range tests {
31        t.Run(tt.name, func(t *testing.T) {
32            result := Add(tt.a, tt.b)
33            if result != tt.expected {
34                t.Errorf("got %d, want %d", result, tt.expected)
35            }
36        })
37    }
38}

1package main
2 
3import "testing"
4 
5func BenchmarkAdd(b *testing.B) {
6    for i := 0; i < b.N; i++ {
7        Add(2, 3)
8    }
9}
10 
11// 运行: go test -bench=. -benchmem