add integration tests

Author: lahirumaramba

integration/auth/tenant_mgt_test.go

@@ -427,6 +427,23 @@ func testTenantAwareUserManagement(t *testing.T, id string) {
 		}
 	})
 
+	t.Run("QueryUsers()", func(t *testing.T) {
+		query := &auth.QueryUsersRequest{
+			Expression: []*auth.Expression{
+				{
+					Email: want.Email,
+				},
+			},
+		}
+		result, err := tenantClient.QueryUsers(context.Background(), query)
+		if err != nil {
+			t.Fatalf("QueryUsers() = %v", err)
+		}
+		if len(result.Users) != 1 || result.Users[0].UID != user.UID {
+			t.Errorf("QueryUsers(email=%s) = %v; want user %s", want.Email, result.Users, user.UID)
+		}
+	})
+
 	t.Run("DeleteUser()", func(t *testing.T) {
 		if err := tenantClient.DeleteUser(context.Background(), user.UID); err != nil {
 			t.Fatalf("DeleteUser() = %v", err)

integration/auth/user_mgt_test.go

@@ -1442,3 +1442,39 @@ func deletePhoneNumberUser(t *testing.T, phoneNumber string) {
 		t.Fatal(err)
 	}
 }
+func TestQueryUsers(t *testing.T) {
+	u1 := newUserWithParams(t)
+	defer deleteUser(u1.UID)
+	u2 := newUserWithParams(t)
+	defer deleteUser(u2.UID)
+
+	// Query by email
+	query := &auth.QueryUsersRequest{
+		Expression: []*auth.Expression{
+			{
+				Email: u1.Email,
+			},
+		},
+	}
+	result, err := client.QueryUsers(context.Background(), query)
+	if err != nil {
+		t.Fatalf("QueryUsers() = %v", err)
+	}
+	if len(result.Users) != 1 || result.Users[0].UID != u1.UID {
+		t.Errorf("QueryUsers(email=%s) = %v; want user %s", u1.Email, result.Users, u1.UID)
+	}
+
+	// Query with limit and sort
+	query = &auth.QueryUsersRequest{
+		Limit:  2,
+		SortBy: auth.CreatedAt,
+		Order:  auth.Desc,
+	}
+	result, err = client.QueryUsers(context.Background(), query)
+	if err != nil {
+		t.Fatalf("QueryUsers() = %v", err)
+	}
+	if len(result.Users) < 2 {
+		t.Errorf("QueryUsers(limit=2) = %d users; want >= 2", len(result.Users))
+	}
+}