1 files changed, 40 insertions, 0 deletions
diff --git a/tests/Components/ExpressionTest.php b/tests/Components/ExpressionTest.php
new file mode 100644
index 0000000..ecf5149
--- /dev/null
+++ b/tests/Components/ExpressionTest.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace SqlParser\Tests\Components;
+
+use SqlParser\Parser;
+use SqlParser\Components\Expression;
+
+use SqlParser\Tests\TestCase;
+
+class ExpressionTest extends TestCase
+{
+
+    public function testParse()
+    {
+        $component = Expression::parse(new Parser(), $this->getTokensList('IF(film_id > 0, film_id, film_id)'));
+        $this->assertEquals($component->expr, 'IF(film_id > 0, film_id, film_id)');
+    }
+
+    public function testParseErr1()
+    {
+        $parser = new Parser();
+        Expression::parse($parser, $this->getTokensList('(1))'));
+        $errors = $this->getErrorsAsArray($parser);
+        $this->assertEquals($errors[0][0], 'Unexpected bracket.');
+    }
+
+    public function testParseErr2()
+    {
+        $parser = new Parser();
+        Expression::parse($parser, $this->getTokensList('tbl..col'));
+        $errors = $this->getErrorsAsArray($parser);
+        $this->assertEquals($errors[0][0], 'Unexpected dot.');
+    }
+
+    public function testBuild()
+    {
+        $component = new Expression('1 + 2', 'three');
+        $this->assertEquals(Expression::build($component), '1 + 2 AS `three`');
+    }
+}