test(multiplayer): cover cooldown response boundary

server/api/errors_test.go

@@ -0,0 +1,21 @@
+package api
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"github.com/cosmic-clash/cosmic-clash/server/domain"
+)
+
+func TestCooldownDomainErrorIsRetryableButNotAConflict(t *testing.T) {
+	recorder := httptest.NewRecorder()
+	writeDomainError(recorder, domain.ErrPlayerCooldown)
+	if recorder.Code != http.StatusTooManyRequests {
+		t.Fatalf("cooldown status = %d, want 429", recorder.Code)
+	}
+	if !strings.Contains(recorder.Body.String(), "matchmaking_cooldown") {
+		t.Fatalf("cooldown response = %q", recorder.Body.String())
+	}
+}