package cast_test

import (
	"math"
	"testing"

	"apigo.cc/go/cast"
)

// --- 黑盒测试 (Black-box / Edge Cases) ---

func TestEdgeCases(t *testing.T) {
	// 1. 极端数值
	if cast.Int64(math.MaxInt64) != math.MaxInt64 { t.Error("MaxInt64 failed") }
	if cast.Float64("1.7976931348623157e+308") == 0 { t.Error("MaxFloat64 string failed") }
	
	// 2. 各种非法格式字符串
	if cast.Int("abc") != 0 { t.Error("Invalid string to int should be 0") }
	if cast.Float("1.2.3.4") != 0 { t.Error("Invalid float string should be 0") }
	if cast.Bool("not_a_bool") != false { t.Error("Invalid bool string should be false") }
	
	// 3. 深度嵌套与空指针
	var p ***int
	if cast.Int(p) != 0 { t.Error("Deep nil pointer to int failed") }
	
	// 4. JSON 异常输入
	if cast.UnJson("{invalid_json}", nil) == nil { t.Log("UnJson handled invalid input") }
}

// --- 性能测试 (Performance / Benchmarks) ---

func BenchmarkInt(b *testing.B) {
	val := "123456"
	for i := 0; i < b.N; i++ {
		_ = cast.Int(val)
	}
}

func BenchmarkIntFromInterface(b *testing.B) {
	var val interface{} = 123456
	for i := 0; i < b.N; i++ {
		_ = cast.Int(val)
	}
}

func BenchmarkString(b *testing.B) {
	val := 123456.789
	for i := 0; i < b.N; i++ {
		_ = cast.String(val)
	}
}

func BenchmarkJson(b *testing.B) {
	type User struct {
		ID   int    `json:"id"`
		Name string `json:"name"`
	}
	u := User{ID: 1, Name: "Benchmark User"}
	for i := 0; i < b.N; i++ {
		_ = cast.Json(u)
	}
}

func BenchmarkIf(b *testing.B) {
	for i := 0; i < b.N; i++ {
		_ = cast.If(i%2 == 0, "A", "B")
	}
}

func BenchmarkSplitTrim(b *testing.B) {
	s := " a, b, c, d, e, f, g "
	for i := 0; i < b.N; i++ {
		_ = cast.SplitTrim(s, ",")
	}
}