travis-ci: install appropriate phpunit version

We should use different phpunit versions on different php versions (see
[1]). Since we going to enable php from 7.0 to 7.4, the logic of
test-run.py is changed to find `phpunit` command in PATH directories,
but the Travis-CI script (test.sh) installs appropriate phpunit version
to /usr/local/bin.

Note: On the first glance it looks that we can skip phpunit installing
on Travis-CI, because it is provided already. However it ships
phpunit-7.5.0 for php-7.0 environment, but it works only on php-7.1+.

Note: We can not just save downloaded phpunit into /usr/local/bin,
because Travis CI have a directory with its own phpunit executable in
PATH prior standard directories. So we create our own directory and add
it to PATH at beginning.

Tests are changed to be compatible with phpunit-6+, see [2] and [3].

Aside of this, removed some dead code from test-run.py.

The next commit will remove test/phpunit.phar file, it is not used
anymore.

[1]: https://phpunit.de/supported-versions.html
[2]: https://thephp.cc/news/2017/02/migrating-to-phpunit-6
[3]: sebastianbergmann/phpunit#2898

test-run.py

@@ -30,15 +30,19 @@ def find_php_bin():
         return '~/.phpenv/versions/{0}/bin/php'.format(version.strip())
     return path
 
+def find_phpunit_bin():
+    path = read_popen('which phpunit').strip()
+    if not path:
+        raise RuntimeError('Unable to find phpunit binary in PATH: ' +
+                           os.environ['PATH'])
+    return path
+
 def prepare_env(php_ini):
     if os.path.isdir('var'):
         shutil.rmtree('var')
     if not os.path.isdir('var') and not os.path.exists('var'):
         os.mkdir('var')
     shutil.copy('test/shared/phpunit.xml', 'var')
-    test_dir_path = os.path.abspath(os.path.join(os.getcwd(), 'test'))
-    test_lib_path = os.path.join(test_dir_path, 'phpunit.phar')
-#    shutil.copy('test/shared/tarantool.ini', 'var')
     shutil.copy(php_ini, 'var')
     shutil.copy('modules/tarantool.so', 'var')
 
@@ -54,13 +58,15 @@ def main():
     srv = TarantoolServer()
     srv.script = 'test/shared/box.lua'
     srv.start()
-    test_dir_path = os.path.abspath(os.path.join(os.getcwd(), 'test'))
     test_cwd = os.path.dirname(srv.vardir)
-    test_lib_path = ""
     try:
         shutil.copy('test/shared/phpunit.xml', os.path.join(test_cwd, 'phpunit.xml'))
         shutil.copy('modules/tarantool.so', test_cwd)
-        test_lib_path = os.path.join(test_dir_path, 'phpunit.phar')
+        try:
+            test_lib_path = find_phpunit_bin()
+        except RuntimeError as e:
+            print(str(e))
+            return 1
 
         version = read_popen_config('--version').strip(' \n\t') + '.'
         version1 = read_popen_config('--extension-dir').strip(' \n\t')

test.sh

@@ -56,6 +56,36 @@ if [ "${ACTUAL_TARANTOOL_VERSION}" != "${TARANTOOL_VERSION}" ]; then
     exit 1
 fi
 
+# Determine PHP interpreter version.
+PHP_VERSION_PATTERN='^PHP \([0-9]\+\.[0-9]\+\)\.[0-9]\+ .*$'
+PHP_VERSION="$(php --version | head -n 1 | sed "s/${PHP_VERSION_PATTERN}/\\1/")"
+
+# Choose maximal phpunit version supported by installed PHP
+# interpreter.
+#
+# https://phpunit.de/supported-versions.html
+case "${PHP_VERSION}" in
+7.0) PHPUNIT_VERSION=6 ;;
+7.1) PHPUNIT_VERSION=7 ;;
+7.2) PHPUNIT_VERSION=8 ;;
+7.3) PHPUNIT_VERSION=9 ;;
+7.4) PHPUNIT_VERSION=9 ;;
+*)
+    echo "Unable to choose phpunit version for PHP ${PHP_VERSION}"
+    exit 1
+    ;;
+esac
+
+# Install phpunit.
+PHPUNIT_URL="https://phar.phpunit.de/phpunit-${PHPUNIT_VERSION}.phar"
+PHPUNIT_DIR="/usr/local/phpunit-${PHPUNIT_VERSION}"
+PHPUNIT_FILE="${PHPUNIT_DIR}/phpunit"
+${SUDO} mkdir -p "${PHPUNIT_DIR}"
+${SUDO} curl -SsLf -o "${PHPUNIT_FILE}" "${PHPUNIT_URL}"
+${SUDO} chmod a+x "${PHPUNIT_FILE}"
+export PATH="${PHPUNIT_DIR}:${PATH}"
+phpunit --version
+
 phpize && ./configure
 make
 make install

test/AssertTest.php

@@ -1,5 +1,8 @@
 <?php
-class AssertTest extends PHPUnit_Framework_TestCase
+
+use PHPUnit\Framework\TestCase;
+
+final class AssertTest extends TestCase
 {
 	protected static $tarantool, $tm;
 
@@ -39,6 +42,9 @@ function assert_f()
 		self::$tarantool->select("test");
 	}
 
+	/**
+	 * @doesNotPerformAssertions
+	 */
 	public function test_01_closed_connection() {
 		for ($i = 0; $i < 20000; $i++) {
 			try {

test/CreateTest.php

@@ -1,11 +1,12 @@
 <?php
 
+use PHPUnit\Framework\TestCase;
 
 class TarantoolExt extends Tarantool {
 		public $property = 42;
 }
 
-class CreateTest extends PHPUnit_Framework_TestCase
+final class CreateTest extends TestCase
 {
 		protected static $port, $tm;
 
@@ -39,6 +40,9 @@ public function test_01_create_test_ping_and_close() {
 			$c->close();
 		}
 
+		/**
+		 * @doesNotPerformAssertions
+		 */
 		public function test_01_01_double_disconnect() {
 			$a = new Tarantool('localhost', self::$port);
 			$a->disconnect();

test/DMLTest.php

@@ -1,5 +1,8 @@
 <?php
-class DMLTest extends PHPUnit_Framework_TestCase
+
+use PHPUnit\Framework\TestCase;
+
+final class DMLTest extends TestCase
 {
 		protected static $tarantool;
 
@@ -158,6 +161,9 @@ public function test_06_update() {
 			$this->assertEquals($result_tuple, $tuple[0]);
 		}
 
+		/**
+		 * @doesNotPerformAssertions
+		 */
 		public function test_07_update_no_error() {
 			self::$tarantool->update("test", 0, array());
 		}
@@ -439,6 +445,9 @@ public static function provideIteratorGood() {
 			];
 		}
 
+	/**
+	 * @doesNotPerformAssertions
+	 */
 	public function test_18_01_delete_loop() {
 		for ($i = 0; $i <= 1000; $i++) {
 			self::$tarantool->replace("pstring", array("test2" . $i, $i));
@@ -451,6 +460,9 @@ public function test_18_01_delete_loop() {
 		gc_collect_cycles();
 	}
 
+	/**
+	 * @doesNotPerformAssertions
+	 */
 	public function test_18_02_delete_loop() {
 		for ($i = 0; $i <= 1000; $i++) {
 			self::$tarantool->replace("pstring", array("test2" . $i, $i));

test/MockTest.php

@@ -1,9 +1,12 @@
 <?php
-class MockTest extends \PHPUnit_Framework_TestCase
+
+use PHPUnit\Framework\TestCase;
+
+final class MockTest extends TestCase
 {
     public function testFoo()
     {
-        $tnt = $this->getMock('Tarantool');
+        $tnt = $this->createMock(Tarantool::class);
         $tnt->expects($this->once())->method('ping');
         $tnt->ping();
     }

test/MsgPackTest.php

@@ -1,5 +1,8 @@
 <?php
-class MsgPackTest extends PHPUnit_Framework_TestCase
+
+use PHPUnit\Framework\TestCase;
+
+final class MsgPackTest extends TestCase
 {
     protected static $tarantool;
 
@@ -48,6 +51,9 @@ public function test_03_msgpack_array_of_float_as_key() {
         self::$tarantool->select("msgpack", array(3));
     }
 
+    /**
+     * @doesNotPerformAssertions
+     */
     public function test_04_msgpack_integer_keys_arrays() {
         self::$tarantool->replace("msgpack", array(4,
                 "Integer keys causing server to error",
@@ -70,11 +76,12 @@ public function test_05_msgpack_string_keys() {
         $this->assertTrue(True);
     }
 
-		public function test_06_msgpack_array_reference() {
-			$data = [
-					'key1' => 'value1',
-			];
-			$link = &$data['key1'];
-			self::$tarantool->call('test_4', [$data]);
-		}
+    /**
+     * @doesNotPerformAssertions
+     */
+    public function test_06_msgpack_array_reference() {
+        $data = array('key1' => 'value1');
+        $link = &$data['key1'];
+        self::$tarantool->call('test_4', [$data]);
+    }
 }

test/RandomTest.php

@@ -10,7 +10,9 @@ function generateRandomString($length = 10) {
 	return $randomString;
 }
 
-class RandomTest extends PHPUnit_Framework_TestCase
+use PHPUnit\Framework\TestCase;
+
+final class RandomTest extends TestCase
 {
 		protected static $tarantool;
 
@@ -39,6 +41,10 @@ public function test_03_another_big_response() {
 				$this->assertEquals($i, count($result));
 			}
 		}
+
+		/**
+		 * @doesNotPerformAssertions
+		 */
 		public function test_04_get_strange_response() {
 			self::$tarantool->select("_schema", "12345");
 		}