Make components' tests run on their own and from main repo.

Each component has dedicated test config and bootstrap.
Duplication of parts of the skeleton is not ideal, but helps to reduce
dependencies between each test suite. Also, this eases the future
subtree split.

Author: clue

phpunit.xml.dist

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit backupGlobals="false"
+         backupStaticAttributes="false"
+         colors="true"
+         convertErrorsToExceptions="true"
+         convertNoticesToExceptions="true"
+         convertWarningsToExceptions="true"
+         processIsolation="false"
+         stopOnFailure="false"
+         syntaxCheck="false"
+         bootstrap="tests/bootstrap.php"
+>
+    <testsuites>
+        <testsuite name="React Test Suite">
+            <directory>./tests/</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist>
+            <directory>./src/</directory>
+        </whitelist>
+    </filter>
+</phpunit>

tests/BufferTest.php

@@ -3,7 +3,6 @@
 namespace React\Tests\Stream;
 
 use React\Stream\Buffer;
-use React\Tests\Socket\TestCase;
 
 class BufferTest extends TestCase
 {

tests/BufferedSinkTest.php

@@ -4,7 +4,6 @@
 
 use React\Stream\BufferedSink;
 use React\Stream\ReadableStream;
-use React\Tests\Socket\TestCase;
 
 /**
  * @covers React\Stream\BufferedSink

tests/CallableStub.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace React\Tests\Stream;
+
+class CallableStub
+{
+    public function __invoke()
+    {
+    }
+}

tests/CompositeStreamTest.php

@@ -5,7 +5,6 @@
 use React\Stream\CompositeStream;
 use React\Stream\ReadableStream;
 use React\Stream\WritableStream;
-use React\Tests\Socket\TestCase;
 
 /**
  * @covers React\Stream\CompositeStream

tests/ReadableStreamTest.php

@@ -3,7 +3,6 @@
 namespace React\Tests\Stream;
 
 use React\Stream\ReadableStream;
-use React\Tests\Socket\TestCase;
 
 class ReadableStreamTest extends TestCase
 {

tests/StreamTest.php

@@ -3,7 +3,6 @@
 namespace React\Tests\Stream;
 
 use React\Stream\Stream;
-use React\Tests\Socket\TestCase;
 
 class StreamTest extends TestCase
 {

tests/TestCase.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace React\Tests\Stream;
+
+class TestCase extends \PHPUnit_Framework_TestCase
+{
+    protected function expectCallableExactly($amount)
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->exactly($amount))
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function expectCallableOnce()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function expectCallableNever()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->never())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function createCallableMock()
+    {
+        return $this->getMock('React\Tests\Stream\CallableStub');
+    }
+}

tests/ThroughStreamTest.php

@@ -4,7 +4,6 @@
 
 use React\Stream\ReadableStream;
 use React\Stream\ThroughStream;
-use React\Tests\Socket\TestCase;
 
 /**
  * @covers React\Stream\ThroughStream

tests/UtilTest.php

@@ -5,7 +5,6 @@
 use React\Stream\Buffer;
 use React\Stream\ReadableStream;
 use React\Stream\Util;
-use React\Tests\Socket\TestCase;
 
 /**
  * @covers React\Stream\Util