Added phpunit tests

Author: ykadosh

tests.php

@@ -0,0 +1,142 @@
+<?php
+use PHPUnit\Framework\TestCase;
+
+/**
+ * To run the tests, use the following command:
+ * $ phpunit --bootstrap compiler.php tests.php
+ */
+class CompilerTest extends TestCase
+{
+    /**
+     * DynamicCSSCompiler::strtoval test
+     */
+    public function testStrToVal()
+    {
+        // Make protected functions accessible through a reflection class
+        $class = new ReflectionClass('DynamicCSSCompiler');
+        $method = $class->getMethod('strtoval');
+        $method->setAccessible(true);
+        $dcss = DynamicCSSCompiler::get_instance();
+        
+        // Assert
+        $str = "'value'";
+        $method->invokeArgs($dcss, array(&$str));
+        $this->assertEquals($str, 'value');
+        
+        $str = "false";
+        $method->invokeArgs($dcss, array(&$str));
+        $this->assertEquals($str, false);
+        
+        $str = "true";
+        $method->invokeArgs($dcss, array(&$str));
+        $this->assertEquals($str, true);
+        
+        $str = "4";
+        $method->invokeArgs($dcss, array(&$str));
+        $this->assertEquals($str, 4);
+        
+        $str = "4.321";
+        $method->invokeArgs($dcss, array(&$str));
+        $this->assertEquals($str, 4.321);
+    }
+    
+    /**
+     * DynamicCSSCompiler::apply_filters test
+     */
+    public function testFilterApplication()
+    {
+        // Make protected functions accessible through a reflection class
+        $class = new ReflectionClass('DynamicCSSCompiler');
+        $method = $class->getMethod('apply_filters');
+        $method->setAccessible(true);
+        $dcss = DynamicCSSCompiler::get_instance();
+        
+        // Assert
+        $this->assertEquals($method->invokeArgs($dcss, array('simple_filter', 'foo', array('simple_filter' => 'simple_filter_callback'))), 'foobar');
+        $this->assertEquals($method->invokeArgs($dcss, array('simple_filter|simple_filter', 'foo', array('simple_filter' => 'simple_filter_callback'))), 'foobarbar');
+        $this->assertEquals($method->invokeArgs($dcss, array('complex_filter(\'bar\')', 'foo', array('complex_filter' => 'complex_filter_callback'))), 'foobar');
+        $this->assertEquals($method->invokeArgs($dcss, array('complex_filter(\'bar\',\'foo\')', 'foo', array('complex_filter' => 'complex_filter_callback'))), 'foobarfoo');
+        $this->assertEquals($method->invokeArgs($dcss, array('complex_filter(\'bar\')|complex_filter(\'foo\')', 'foo', array('complex_filter' => 'complex_filter_callback'))), 'foobarfoo');
+        $this->assertEquals($method->invokeArgs($dcss, array('add_filter(5,5)', '5 + 5 = ', array('add_filter' => 'add_filter_callback'))), '5 + 5 = 10');
+        $this->assertEquals($method->invokeArgs($dcss, array('add_filter(5.5,5.5)', '5.5 + 5.5 = ', array('add_filter' => 'add_filter_callback'))), '5.5 + 5.5 = 11');
+    }
+    
+    /**
+     * DynamicCSSCompiler::compile_css test
+     */
+    public function testCompilation()
+    {
+        // Make protected functions accessible through a reflection class
+        $class = new ReflectionClass('DynamicCSSCompiler');
+        $method = $class->getMethod('compile_css');
+        $method->setAccessible(true);
+        $dcss = DynamicCSSCompiler::get_instance();
+        
+        // Assert
+        $this->assertEquals($method->invokeArgs($dcss, array('$var1', 'callback', array())), 'value1');
+        $this->assertEquals($method->invokeArgs($dcss, array('$var2', 'callback', array())), 'value2');
+        $this->assertEquals($method->invokeArgs($dcss, array('$var3[\'index1\']', 'callback', array())), 'value3');
+        $this->assertEquals($method->invokeArgs($dcss, array('$var3[\'index2\'][\'subindex1\']', 'callback', array())), 'value4');
+        $this->assertEquals($method->invokeArgs($dcss, array('$var3[index2][subindex1]', 'callback', array())), 'value4');
+        $this->assertEquals($method->invokeArgs($dcss, array('$var3[index2][subindex1]', 'callback', array())), 'value4');
+        $this->assertEquals($method->invokeArgs($dcss, array('$var4|simpleFilter', 'callback', array('simpleFilter' => 'simple_filter_callback'))), 'valuebar');
+        $this->assertEquals($method->invokeArgs($dcss, array('$var4|simpleFilter|simpleFilter', 'callback', array('simpleFilter' => 'simple_filter_callback'))), 'valuebarbar');
+        $this->assertEquals($method->invokeArgs($dcss, array('$var4|complexFilter(6)', 'callback', array('complexFilter' => 'complex_filter_callback'))), 'value6');
+        $this->assertEquals($method->invokeArgs($dcss, array('$var5|complexFilter(e)|complexFilter(7)', 'callback', array('complexFilter' => 'complex_filter_callback'))), 'value7');
+        $this->assertEquals($method->invokeArgs($dcss, array('$var3[index1]|simpleFilter', 'callback', array('simpleFilter' => 'simple_filter_callback'))), 'value3bar');
+    }
+}
+
+/**
+ * Value retrieval function
+ */
+function callback( $varname, $subscripts )
+{
+    $values = array(
+        'var1'  => 'value1',
+        'var2'  => 'value2',
+        'var3'  => array(
+            'index1' => 'value3',
+            'index2' => array(
+                'subindex1' => 'value4'
+            )
+        ),
+        'var4'  => 'value',
+        'var5'  => 'valu'
+    );
+    
+    $val = $values[$varname];
+    if( null !== $subscripts )
+    {
+        foreach( $subscripts as $subscript )
+        {
+            $val = $val[$subscript];
+        }
+    }
+    
+    return $val;
+}
+
+/**
+ * Simple string concat filter
+ */
+function simple_filter_callback( $foo )
+{
+    return $foo.'bar';
+}
+
+/**
+ * String concat filter with parameters
+ */
+function complex_filter_callback( $value, $arg1 = '', $arg2 = '')
+{
+    return $value.$arg1.$arg2;
+}
+
+/**
+ * Number adding filter
+ */
+function add_filter_callback( $value, $a, $b )
+{
+    return $value.($a+$b);
+}