fix unit test warning

Author: inhere

.gitignore

@@ -11,3 +11,4 @@ composer.lock
 *.swp
 *.swo
 .DS_Store
+.phpunit.result.cache

test/RuleValidationTest.php

@@ -284,8 +284,19 @@ public function testValidateFailed()
             ->validate([], false);
         $out = ob_get_clean();
 
-        $this->assertStringContainsString('use when pre-check', $out);
-        $this->assertStringContainsString('use custom validate', $out);
+        $needle = 'use when pre-check';
+        if (\version_compare(\PHPUnit\Runner\Version::id(), '7.0.0', '<') ) {
+            $this->assertContains($needle, $out);
+        } else {
+            $this->assertStringContainsString($needle, $out);
+        }
+
+        $needle = 'use custom validate';
+        if (\version_compare(\PHPUnit\Runner\Version::id(), '7.0.0', '<') ) {
+            $this->assertContains($needle, $out);
+        } else {
+            $this->assertStringContainsString($needle, $out);
+        }
 
         $this->assertFalse($v->isOk());
         $this->assertTrue($v->failed());

test/Validator/MessagesTest.php

@@ -10,6 +10,7 @@
 
 use Inhere\Validate\Validator\Messages;
 use PHPUnit\Framework\TestCase;
+use PHPUnit\Runner\Version;
 
 /**
  * Class MessagesTest
@@ -30,6 +31,12 @@ public function testBasic()
         $this->assertTrue(Messages::has('key1'));
         $this->assertFalse(Messages::has('key3'));
 
-        $this->assertContains('validation is not through!', Messages::getDefault());
+        $needle = 'validation is not through!';
+
+        if (\version_compare(Version::id(), '7.0.0', '<') ) {
+            $this->assertContains($needle, Messages::getDefault());
+        } else {
+            $this->assertStringContainsString($needle, Messages::getDefault());
+        }
     }
 }