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vendor/react/partial/tests/BindRightTest.php

@@ -0,0 +1,81 @@
+<?php
+
+namespace React\Partial;
+
+class BindRightTest extends \PHPUnit_Framework_TestCase
+{
+    public function testBindWithNoArgs()
+    {
+        $div = $this->createDivFunction();
+        $newDiv = bind_right($div);
+        $this->assertSame(2, $newDiv(4, 2));
+    }
+
+    public function testBindWithOneArg()
+    {
+        $div = $this->createDivFunction();
+        $divOne = bind_right($div, 4);
+        $this->assertSame(0.5, $divOne(2));
+    }
+
+    public function testBindWithTwoArgs()
+    {
+        $div = $this->createDivFunction();
+        $divTwo = bind_right($div, 2, 4);
+        $this->assertSame(0.5, $divTwo());
+    }
+
+    public function testBindWithPlaceholder()
+    {
+        $div = $this->createDivFunction();
+        $divFun = bind_right($div, …(), 4);
+        $this->assertSame(5, $divFun(20));
+        $this->assertSame(10, $divFun(40));
+    }
+
+    public function testBindWithMultiplePlaceholders()
+    {
+        $div = $this->createDivFunction();
+        $divTwo = bind_right($div, …(), 2, …());
+        $this->assertSame(1, $divTwo(4, 2));
+        $this->assertSame(1, $divTwo(10, 5));
+        $this->assertSame(25, $divTwo(100, 2));
+    }
+
+    public function testPlaceholderParameterPosition()
+    {
+        $substr = bind_right('substr', …(), 0, …());
+        $this->assertSame('foo', $substr('foo', 3));
+        $this->assertSame('fo', $substr('foo', 2));
+        $this->assertSame('f', $substr('foo', 1));
+    }
+
+    /**
+     * @expectedException InvalidArgumentException
+     * @expectedExceptionMessage Cannot resolve parameter placeholder at position 0. Parameter stack is empty
+     */
+    public function testStringConversion()
+    {
+        $div = $this->createDivFunction();
+        $divTwo = bind_right($div, …(), 2);
+
+        $divTwo();
+    }
+
+    public function testAliasForUnicodePlaceholderFunction()
+    {
+        $this->assertSame(…(), placeholder());
+    }
+
+    private function createDivFunction()
+    {
+        return function () {
+            $args = func_get_args();
+            $value = array_shift($args);
+            foreach ($args as $arg) {
+                $value /= $arg;
+            }
+            return $value;
+        };
+    }
+}