package model

import "testing"

func TestJudgeQPCR(t *testing.T) {
	cases := []struct {
		name      string
		cts       []float64
		threshold float64
		want      string
	}{
		{"Ct32 阳性", []float64{32}, 35, "positive"},
		{"Ct38 阴性", []float64{38}, 35, "negative"},
		{"无Ct 阴性", nil, 35, "negative"},
		{"多个Ct含阳性", []float64{33, 37}, 35, "positive"},
		{"自定义阈值40", []float64{38}, 40, "positive"},
		{"阈值为0用默认35", []float64{38}, 0, "negative"},
	}
	for _, c := range cases {
		got, reason := JudgeQPCR(c.cts, c.threshold)
		if got != c.want {
			t.Errorf("%s: result=%s, want %s（原因 %s）", c.name, got, c.want, reason)
		}
		if reason == "" {
			t.Errorf("%s: 缺少判读说明", c.name)
		}
	}
}

func TestValidateSpectrumFile(t *testing.T) {
	for _, name := range []string{"a.csv", "b.txt", "c.json"} {
		if err := ValidateSpectrumFile(name, 1024); err != nil {
			t.Errorf("%s 应被允许: %v", name, err)
		}
	}
	if err := ValidateSpectrumFile("a.jpg", 1024); err == nil {
		t.Error("图片扩展名不应被允许")
	}
	if err := ValidateSpectrumFile("a.csv", 0); err == nil {
		t.Error("空文件应被拒绝")
	}
	if err := ValidateSpectrumFile("a.csv", maxSpectrumSize+1); err == nil {
		t.Error("超 5MB 应被拒绝")
	}
}