feat(server-go): 分子检测扩展（qPCR Ct 判读/SERS 光谱上传/光谱库，#19）

server-go/internal/model/molecular_test.go

@@ -0,0 +1,45 @@
+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")
+	}
+}