Golang Testing

Golang Testing

This skill provides guidance on comprehensive testing strategies for Go applications including unit tests, integration tests, benchmarks, and test organization.

When to Use This Skill

• When writing unit tests for Go code
• When creating table-driven tests
• When mocking dependencies with interfaces
• When writing integration tests with test containers
• When benchmarking performance-critical code
• When organizing test suites and fixtures

Table-Driven Tests

Basic Pattern

func TestAdd(t *testing.T) {
    tests := []struct {
        name     string
        a, b     int
        expected int
    }{
        {"positive numbers", 2, 3, 5},
        {"negative numbers", -2, -3, -5},
        {"mixed numbers", -2, 3, 1},
        {"zeros", 0, 0, 0},
    }

    for _, tt := range tests {
        t.Run(tt.name, func(t *testing.T) {
            result := Add(tt.a, tt.b)
            if result != tt.expected {
                t.Errorf("Add(%d, %d) = %d; want %d", tt.a, tt.b, result, tt.expected)
            }
        })
    }
}