Add .travis.yml. Add tests.

.travis.yml

@@ -0,0 +1,18 @@
+sudo: required
+dist: trusty
+group: edge
+
+language: php
+
+php:
+  - 7.0
+  - 7.1
+  - 7.2
+  - nightly
+
+script:
+  - phpize
+  - ./configure
+  - make
+  - make test
+  - sudo make install

README.md

@@ -1,5 +1,8 @@
 # ext-collections
 
+[![Travis-CI](https://travis-ci.org/CismonX/ext-collections.svg?branch=master)](https://travis-ci.org/CismonX/ext-collections)
+[![MIT license](https://img.shields.io/badge/licence-MIT-blue.svg)](https://opensource.org/licenses/MIT)
+
 ## 1. Introduction
 
 This PHP extension provides a set of useful functional-style operations on PHP arrays, which makes array manipulation simple and scalable.

config.m4

@@ -1,8 +1,8 @@
 PHP_ARG_ENABLE(collections, for collections support,
 [  --enable-collections           Enable collections support])
 
-PHP_ARG_ENABLE(collections, for debug support,
-[  --enable-collections-debug     Compile with debug symbols])
+PHP_ARG_ENABLE(collections-debug, for debug support,
+[  --enable-collections-debug     Compile with debug symbols], no, no)
 
 if test "$PHP_COLLECTIONS" != "no"; then
   if test "$PHP_COLLECTIONS_DEBUG" != "no"; then

tests/000-loaded.phpt

@@ -0,0 +1,8 @@
+--TEST--
+Check whether the extension is loaded.
+--FILE--
+<?php
+if (!extension_loaded('collections'))
+    echo "Extension not loaded.", PHP_EOL;
+?>
+--EXPECT--

tests/001-init.phpt

@@ -0,0 +1,11 @@
+--TEST--
+Test Collection::init().
+--FILE--
+<?php
+$array = ['a' => 'b'];
+$collection = Collection::init($array);
+$collection2 = Collection::init($collection);
+if ($array != $collection2->toArray())
+    echo 'Collection::init() failed.', PHP_EOL;
+?>
+--EXPECT--