Fix test run with PHPUnit 11.2.4

The patch replaces `assertRegExp` with `assertMatchesRegularExpression`
because the first one is outdated.

Closes #157

test/DMLTest.php

@@ -361,7 +361,7 @@ public function test_16_hash_select() {
             self::$tarantool->select("test_hash", null, null, null, null, TARANTOOL::ITERATOR_EQ);
             $this->assertFalse(True);
         } catch (TarantoolClientError $e) {
-            $this->assertRegExp('(Invalid key part|via a partial key)', $e->getMessage());
+            $this->assertMatchesRegularExpression('(Invalid key part|via a partial key)', $e->getMessage());
         }
     }
 
@@ -373,7 +373,7 @@ public function test_17_01_it_clienterror($spc, $itype, $xcmsg) {
             self::$tarantool->select($spc, null, null, null, null, $itype);
             $this->assertFalse(True);
         } catch (TarantoolClientError $e) {
-            $this->assertRegExp($xcmsg, $e->getMessage());
+            $this->assertMatchesRegularExpression($xcmsg, $e->getMessage());
         }
     }
 

test/PhpUnitCompat.php

@@ -230,6 +230,28 @@ public function expectExceptionMessageMatches($regularExpression) {
     }
 }
 
+/*
+ * AssertMatchesRegularExpressionTrait (private).
+ *
+ * phpunit-8 provides the new name for the
+ * assertRegExp() method:
+ * assertMatchesRegularExpression(). phpunit-10 removes the old name.
+ *
+ * This trait adds assertMatchesRegularExpression() method for
+ * phpunit-6, phpunit-7, phpunit-8 and phpunit-9.
+ */
+if ($testCaseRef->hasMethod('assertMatchesRegularExpression')) {
+    trait AssertMatchesRegularExpressionTrait {
+        /* Nothing to define. */
+    }
+} else {
+    trait AssertMatchesRegularExpressionTrait {
+        public function assertMatchesRegularExpression($pattern, $string, $message = '') {
+            self::assertRegExp($pattern, $string, $message);
+        }
+    }
+}
+
 /*
  * TestCaseCompat (public).
  *
@@ -240,4 +262,5 @@ trait TestCaseCompat
     use SetUpTearDownTrait;
     use AssertStringContainsStringTrait;
     use ExpectExceptionMessageMatchesTrait;
+    use AssertMatchesRegularExpressionTrait;
 }