add windows integration test

.github/workflows/integration-tests-win.yml

@@ -0,0 +1,21 @@
+name: Integration Tests Windows
+on:
+  # Run tests on main just so the module and build cache can be saved and used
+  # in PRs. This speeds up the time it takes to test PRs dramatically.
+  # (More information on https://docs.github.com/en/[email protected]/actions/using-workflows/caching-dependencies-to-speed-up-workflows)
+  push:
+    branches:
+      - main
+  pull_request:
+jobs:
+  run_tests:
+    runs-on: windows-latest
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+    - name: Setup Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: "1.22"
+    - name: Run tests
+      run: make integration-test

internal/cmd/integration-tests/tests/windows/config.alloy

@@ -0,0 +1,23 @@
+prometheus.exporter.windows "default" { }
+
+prometheus.scrape "default" {
+  targets    = prometheus.exporter.windows.default.targets
+  forward_to = [prometheus.remote_write.default.receiver]
+  scrape_interval = "1s"
+  scrape_timeout = "500ms"
+}
+
+prometheus.remote_write "default" {
+  endpoint {
+    url = "http://localhost:9009/api/v1/push"
+    metadata_config {
+        send_interval = "1s"
+    }
+    queue_config {
+        max_samples_per_send = 100
+    }
+  }
+  external_labels = {
+    test_name = "win_metrics",
+  }
+}

internal/cmd/integration-tests/tests/windows/windows_metrics_test.go

@@ -0,0 +1,22 @@
+//go:build windows
+
+package main
+
+import (
+	"testing"
+
+	"github.com/grafana/alloy/internal/cmd/integration-tests/common"
+)
+
+func TestWindowsMetrics(t *testing.T) {
+	var winMetrics = []string{
+		"windows_cpu_logical_processor",    // cpu
+		"windows_cs_logical_processors",    // cs
+		"windows_logical_disk_info",        // logical_disk
+		"windows_net_bytes_received_total", // net
+		"windows_os_info",                  // os
+		"windows_service_info",             // service
+		"windows_system_processes",         // system
+	}
+	common.MimirMetricsTest(t, winMetrics, []string{}, "win_metrics")
+}