// 积分账务单元测试，验证积分精度解析和非法输入处理。
package billing

import "testing"

// TestParsePointCents 验证积分字符串能够稳定转换为整数分值。
func TestParsePointCents(t *testing.T) {
	tests := map[string]int64{
		"0":      0,
		"1":      100,
		"1.2":    120,
		"1.23":   123,
		"1.2300": 123,
		"999.99": 99999,
	}
	for input, expected := range tests {
		actual, err := parsePointCents(input)
		if err != nil {
			t.Fatalf("parse %q: %v", input, err)
		}
		if actual != expected {
			t.Fatalf("parse %q: expected %d, got %d", input, expected, actual)
		}
	}
	for _, input := range []string{"", "-1", "1.234", "abc"} {
		if _, err := parsePointCents(input); err == nil {
			t.Fatalf("expected %q to be rejected", input)
		}
	}
}