Fix tests

tests/TestCase/Database/Expression/FunctionExpressionTest.php

@@ -79,7 +79,7 @@ class FunctionExpressionTest extends TestCase
         $binder = new ValueBinder;
         $f = new FunctionExpression('MyFunction', ['foo', 'bar']);
         $g = new FunctionExpression('Wrapper', ['bar' => 'literal', $f]);
-        $this->assertEquals('Wrapper(bar, (MyFunction(:param0, :param1)))', $g->sql($binder));
+        $this->assertEquals('Wrapper(bar, MyFunction(:param0, :param1))', $g->sql($binder));
     }
 
     /**

tests/TestCase/Database/ExpressionTypeCastingTest.php

@@ -158,7 +158,7 @@ class ExpressionTypeCastingTest extends TestCase
         $function = new FunctionExpression('DATE', ['2016-01'], ['test']);
         $binder = new ValueBinder;
         $sql = $function->sql($binder);
-        $this->assertEquals('DATE((CONCAT(:param0, :param1)))', $sql);
+        $this->assertEquals('DATE(CONCAT(:param0, :param1))', $sql);
         $this->assertEquals('2016-01', $binder->bindings()[':param0']['value']);
 
         $expressions = [];