1 files changed, 159 insertions, 0 deletions
diff --git a/http/server_test.go b/http/server_test.go
new file mode 100644
index 0000000..7138c73
--- /dev/null
+++ b/http/server_test.go
@@ -0,0 +1,159 @@
+package http_test
+
+import (
+	"context"
+	"io"
+	"net"
+	"net/http"
+	"strings"
+	"testing"
+	"time"
+
+	httpServer "go.sudomsg.com/kit/http"
+)
+
+// helper to find free TCP ports
+func newListener(tb testing.TB) net.Listener {
+	tb.Helper()
+
+	ln, err := net.Listen("tcp", "localhost:0")
+	if err != nil {
+		tb.Fatalf("failed to open listener: %v", err)
+	}
+	return ln
+}
+
+func TestOpenConfigListeners(t *testing.T) {
+	t.Parallel()
+	t.Run("successful config", func(t *testing.T) {
+		t.Parallel()
+		ctx := t.Context()
+
+		cfg := []httpServer.ServerConfig{
+			{Network: "tcp", Address: "localhost:0"},
+			{Network: "tcp", Address: "localhost:0"},
+		}
+
+		lns, err := httpServer.OpenConfigListners(ctx, cfg)
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		defer lns.CloseAll()
+
+		if got := len(lns); got != len(cfg) {
+			t.Errorf("expected %d listeners, got %d", len(cfg), got)
+		}
+	})
+
+	t.Run("port conflict triggers cleanup", func(t *testing.T) {
+		t.Parallel()
+		ctx := t.Context()
+
+		conflict := newListener(t)
+		defer conflict.Close()
+
+		cfg := []httpServer.ServerConfig{
+			{Network: "tcp", Address: "localhost:0"},
+			{Network: "tcp", Address: conflict.Addr().String()}, // will fail
+		}
+
+		lns, err := httpServer.OpenConfigListners(ctx, cfg)
+		if err == nil {
+			defer lns.CloseAll()
+			t.Fatal("expected error due to conflict, got nil")
+		}
+	})
+}
+
+func TestCloseAll(t *testing.T) {
+	t.Run("closes all listeners", func(t *testing.T) {
+		t.Parallel()
+		ln1 := newListener(t)
+		ln2 := newListener(t)
+
+		ls := httpServer.Listeners{ln1, ln2}
+		err := ls.CloseAll()
+		if err != nil {
+			t.Errorf("unexpected error from CloseAll: %v", err)
+		}
+
+		for _, ln := range ls {
+			if _, err := ln.Accept(); err == nil {
+				t.Error("expected listener to be closed, but Accept succeeded")
+			}
+		}
+	})
+}
+
+func TestRunHTTPServers(t *testing.T) {
+	t.Parallel()
+	t.Run("basic serve and shutdown", func(t *testing.T) {
+		t.Parallel()
+		ctx := t.Context()
+		handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			io.WriteString(w, "hello")
+		})
+
+		ln := newListener(t)
+		addr := ln.Addr().String()
+
+		ctx, cancel := context.WithCancel(ctx)
+		defer cancel()
+
+		go func() {
+			// Wait for server to be ready
+			time.Sleep(200 * time.Millisecond)
+
+			r, err := http.NewRequestWithContext(ctx, http.MethodGet, "http://"+addr, nil)
+			resp, err := http.DefaultClient.Do(r)
+			if err != nil {
+				t.Errorf("http.Do error: %v", err)
+				return
+			}
+			defer resp.Body.Close()
+
+			body, _ := io.ReadAll(resp.Body)
+			if got := strings.TrimSpace(string(body)); got != "hello" {
+				t.Errorf("unexpected response body: %q", got)
+			}
+
+			cancel() // shutdown the server
+		}()
+
+		err := httpServer.RunHTTPServers(ctx, httpServer.Listeners{ln}, handler)
+		if err != nil {
+			t.Fatalf("RunHTTPServers failed: %v", err)
+		}
+	})
+}
+
+func TestInvalidConfig(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name   string
+		config httpServer.ServerConfig
+	}{
+		{
+			name:   "invalid network",
+			config: httpServer.ServerConfig{Network: "invalid", Address: "localhost:0"},
+		},
+		{
+			name:   "invalid address",
+			config: httpServer.ServerConfig{Network: "tcp", Address: "::::"},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+
+			ctx := t.Context()
+
+			_, err := httpServer.OpenConfigListners(ctx, []httpServer.ServerConfig{tt.config})
+			if err == nil {
+				t.Fatal("OpenConfigListners() expected error, got nil")
+			}
+		})
+	}
+}