package convx_test

import (
	"testing"

	"code.yun.ink/pkg/convx"
)

func TestToInt64(t *testing.T) {
	var tests = []struct {
		input   interface{}
		output  int64
		isError bool
	}{
		{"123", 123, false},            // string
		{123.456, 123, false},          // float64
		{true, 1, false},               // bool
		{"abc", 0, true},               // string
		{nil, 0, true},                 // nil
		{123, 123, false},              // int
		{int32(123), 123, false},       // int32
		{uint64(123), 123, false},      // uint64
		{int64(123), 123, false},       // int64
		{float32(123.456), 123, false}, // float32
		{float64(123.456), 123, false}, // float64
		{"-123", -123, false},          // string
		{"123.456", 123, false},        // string
		{"170141183460469231731687303715884105727", 9223372036854775807, false},   // max int64
		{"-170141183460469231731687303715884105728", -9223372036854775808, false}, // min int64
		{"9223372036854775807", 9223372036854775807, false},                       // max int64
		{"-9223372036854775808", -9223372036854775808, false},                     // min int64
		{"12345678901234567890", 9223372036854775807, false},                      // too large

	}
	for idx, test := range tests {
		output, err := convx.ToInt64(test.input)
		if test.isError && err == nil {
			t.Error(idx, ": ToInt64(", test.input, ") should return error")
			continue
		} else if !test.isError && err != nil {
			t.Error(idx, ": ToInt64(", test.input, ") should not return error", err.Error())
			continue
		}
		if output != test.output {
			t.Error("ToInt64(", test.input, ") should be", test.output, "but was", output)
		}
	}
}