package model

import (
	"testing"
	"time"
)

func TestNewSampleDefaultsLabels(t *testing.T) {
	at := time.Unix(1700000000, 0)
	s := NewSample(MetricCPUUsage, 42.5, at, nil)
	if s.Name != MetricCPUUsage || s.Value != 42.5 || s.Timestamp != 1700000000 {
		t.Fatalf("sample = %+v", s)
	}
	if s.Labels == nil {
		t.Fatalf("labels should not be nil after NewSample")
	}
}

func TestNewSampleKeepsProvidedLabels(t *testing.T) {
	at := time.Now()
	labels := map[string]string{LabelHostID: "h-001", "service": "web"}
	s := NewSample(MetricMemUsedPercent, 70, at, labels)
	if s.Labels[LabelHostID] != "h-001" || s.Labels["service"] != "web" {
		t.Fatalf("labels = %v", s.Labels)
	}
}

func TestMetricNameConstants(t *testing.T) {
	// 与架构设计 5.1.3 的 <domain>.<metric> 命名规范对齐。
	want := map[string]string{
		"cpu.usage":           MetricCPUUsage,
		"mem.used_percent":    MetricMemUsedPercent,
		"load.1m":             MetricLoad1m,
		"disk.used_percent":   MetricDiskUsedPercent,
		"disk.io.read_bytes":  MetricDiskIOReadBytes,
		"disk.io.write_bytes": MetricDiskIOWriteBytes,
		"net.bytes_sent":      MetricNetBytesSent,
		"net.bytes_recv":      MetricNetBytesRecv,
		"net.pkt_drop":        MetricNetPktDrop,
		"process.cpu":         MetricProcessCPU,
		"process.mem":         MetricProcessMem,
		"process.count":       MetricProcessCount,
	}
	for name, constant := range want {
		if name != constant {
			t.Fatalf("metric name mismatch: %q != %q", name, constant)
		}
	}
}