Update test suite to ensure 100% code coverage

Author: clue

.github/workflows/ci.yml

@@ -25,6 +25,9 @@ jobs:
           - 5.6
           - 5.5
           - 5.4
+        exclude: # ignore flaky results for legacy PHP on Windows
+          - os: windows-2022
+            php: 5.4
     steps:
       - uses: actions/checkout@v3
       - uses: shivammathur/setup-php@v2
@@ -34,10 +37,17 @@ jobs:
           coverage: xdebug
           ini-file: development
       - run: composer install
-      - run: vendor/bin/phpunit --coverage-text
+      - run: vendor/bin/phpunit --coverage-text --coverage-clover=clover.xml
         if: ${{ matrix.php >= 7.3 }}
-      - run: vendor/bin/phpunit --coverage-text -c phpunit.xml.legacy
+      - run: vendor/bin/phpunit --coverage-text --coverage-clover=clover.xml -c phpunit.xml.legacy
         if: ${{ matrix.php < 7.3 }}
+      - name: Check 100% code coverage
+        if: ${{ matrix.os != 'windows-2022' }}
+        shell: php {0}
+        run: |
+          <?php
+          $metrics = simplexml_load_file('clover.xml')->project->metrics;
+          exit((int) $metrics['statements'] === (int) $metrics['coveredstatements'] ? 0 : 1);
       - run: cd tests/install-as-dep && composer install && php query.php
       - run: cd tests/install-as-dep && php -d phar.readonly=0 vendor/bin/phar-composer build . query.phar && php query.phar
       - run: cd tests/install-as-dep && mv query.phar query.ext && php query.ext

README.md

@@ -1,6 +1,7 @@
 # clue/reactphp-sqlite
 
 [![CI status](https://github.com/clue/reactphp-sqlite/actions/workflows/ci.yml/badge.svg)](https://github.com/clue/reactphp-sqlite/actions)
+[![code coverage](https://img.shields.io/badge/code%20coverage-100%25-success)](#tests)
 [![installs on Packagist](https://img.shields.io/packagist/dt/clue/reactphp-sqlite?color=blue&label=installs%20on%20Packagist)](https://packagist.org/packages/clue/reactphp-sqlite)
 
 Async SQLite database, lightweight non-blocking process wrapper around file-based database extension (`ext-sqlite3`),
@@ -470,6 +471,15 @@ To run the test suite, go to the project root and run:
 vendor/bin/phpunit
 ```
 
+The test suite is set up to always ensure 100% code coverage across all
+supported environments (except the platform-specific code that does not execute
+on Windows). If you have the Xdebug extension installed, you can also generate a
+code coverage report locally like this:
+
+```bash
+XDEBUG_MODE=coverage vendor/bin/phpunit --coverage-text
+```
+
 ## License
 
 This project is released under the permissive [MIT license](LICENSE).

src/Factory.php

@@ -128,8 +128,9 @@ public function open($filename, $flags = null)
                 return \React\Promise\resolve(new BlockingDatabase($filename, $flags));
             } catch (\Exception $e) {
                 return \React\Promise\reject(new \RuntimeException($e->getMessage()) );
-            } catch (\Error $e) {
-                return \React\Promise\reject(new \RuntimeException($e->getMessage()));
+            } catch (\Error $e) { // @codeCoverageIgnore
+                assert(\PHP_VERSION_ID >= 70000); // @codeCoverageIgnore
+                return \React\Promise\reject(new \RuntimeException($e->getMessage())); // @codeCoverageIgnore
             }
         }
 
@@ -229,12 +230,15 @@ private function openProcessIo($filename, $flags = null)
         $cwd = null;
         $worker = \dirname(__DIR__) . '/res/sqlite-worker.php';
 
+        // launch worker process directly or inside Phar by mapping relative paths (covered by functional test suite)
+        // @codeCoverageIgnoreStart
         if (\class_exists('Phar', false) && ($phar = \Phar::running(false)) !== '') {
-            $worker = '-r' . 'Phar::loadPhar(' . var_export($phar, true) . ');require(' . \var_export($worker, true) . ');'; // @codeCoverageIgnore
+            $worker = '-r' . 'Phar::loadPhar(' . var_export($phar, true) . ');require(' . \var_export($worker, true) . ');';
         } else {
             $cwd = __DIR__ . '/../res';
             $worker = \basename($worker);
         }
+        // @codeCoverageIgnoreEnd
         $command = 'exec ' . \escapeshellarg($this->bin) . ' ' . escapeshellarg($worker);
 
         // Try to get list of all open FDs (Linux/Mac and others)
@@ -297,12 +301,15 @@ private function openSocketIo($filename, $flags = null)
         $cwd = null;
         $worker = \dirname(__DIR__) . '/res/sqlite-worker.php';
 
+        // launch worker process directly or inside Phar by mapping relative paths (covered by functional test suite)
+        // @codeCoverageIgnoreStart
         if (\class_exists('Phar', false) && ($phar = \Phar::running(false)) !== '') {
-            $worker = '-r' . 'Phar::loadPhar(' . var_export($phar, true) . ');require(' . \var_export($worker, true) . ');'; // @codeCoverageIgnore
+            $worker = '-r' . 'Phar::loadPhar(' . var_export($phar, true) . ');require(' . \var_export($worker, true) . ');';
         } else {
             $cwd = __DIR__ . '/../res';
             $worker = \basename($worker);
         }
+        // @codeCoverageIgnoreEnd
         $command = \escapeshellarg($this->bin) . ' ' . escapeshellarg($worker);
 
         // launch process without default STDIO pipes, but inherit STDERR
@@ -316,9 +323,12 @@ private function openSocketIo($filename, $flags = null)
         // start temporary socket on random address
         $server = @stream_socket_server('tcp://127.0.0.1:0', $errno, $errstr);
         if ($server === false) {
+            // report error if temporary socket server can not be started (unlikely)
+            // @codeCoverageIgnoreStart
             return \React\Promise\reject(
                 new \RuntimeException('Unable to start temporary socket I/O server: ' . $errstr, $errno)
             );
+            // @codeCoverageIgnoreEnd
         }
 
         // pass random server address to child process to connect back to parent process
@@ -342,7 +352,7 @@ private function openSocketIo($filename, $flags = null)
             fclose($server);
             $process->terminate();
 
-            $deferred->reject(new \RuntimeException('No connection detected'));
+            $deferred->reject(new \RuntimeException('Opening database socket timed out'));
         });
 
         $process->on('exit', function () use ($deferred, $server, $timeout) {

src/Io/ProcessIoDatabase.php

@@ -80,9 +80,9 @@ public function query($sql, array $params = array())
         foreach ($params as &$value) {
             if (\is_string($value) && \preg_match('/[\x00-\x08\x11\x12\x14-\x1f\x7f]/u', $value) !== 0) {
                 $value = ['base64' => \base64_encode($value)];
-            } elseif (\is_float($value) && \PHP_VERSION_ID < 50606) {
+            } elseif (\is_float($value) && \PHP_VERSION_ID < 50606) { // @codeCoverageIgnoreStart
                 $value = ['float' => $value];
-            }
+            } // @codeCoverageIgnoreEnd
         }
 
         return $this->send('query', array($sql, $params))->then(function ($data) {
@@ -98,9 +98,10 @@ public function query($sql, array $params = array())
                     foreach ($row as &$value) {
                         if (isset($value['base64'])) {
                             $value = \base64_decode($value['base64']);
-                        } elseif (isset($value['float'])) {
+                        } elseif (isset($value['float'])) { // @codeCoverageIgnoreStart
+                            assert(\PHP_VERSION_ID < 50606);
                             $value = (float)$value['float'];
-                        }
+                        } // @codeCoverageIgnoreEnd
                     }
                 }
             }

tests/FunctionalDatabaseTest.php

@@ -797,6 +797,56 @@ public function testQuerySelectEmptyResolvesWithEmptyResultSetWithColumnsAndNoRo
         $this->assertSame([], $data->rows);
     }
 
+    public function testCancelOpenWithSocketRejectsPromise()
+    {
+        $factory = new Factory();
+
+        $ref = new \ReflectionProperty($factory, 'useSocket');
+        $ref->setAccessible(true);
+        $ref->setValue($factory, true);
+
+        $promise = $factory->open(':memory:');
+        $promise->cancel();
+
+        $exception = null;
+        $promise->then(null, function ($reason) use (&$exception) {
+            $exception = $reason;
+        });
+
+        $this->assertInstanceOf('RuntimeException', $exception);
+        $this->assertEquals('Opening database cancelled', $exception->getMessage());
+    }
+
+    public function testOpenWithSocketWillRejectWhenSocketConnectionTimesOut()
+    {
+        $timer = null;
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('addTimer')->with(5.0, $this->callback(function (callable $callback) use (&$timer) {
+            $timer = $callback;
+            return true;
+        }));
+        $loop->expects($this->never())->method('cancelTimer');
+
+        $factory = new Factory($loop);
+
+        $ref = new \ReflectionProperty($factory, 'useSocket');
+        $ref->setAccessible(true);
+        $ref->setValue($factory, true);
+
+        $promise = $factory->open(':memory:');
+
+        $this->assertNotNull($timer);
+        $timer();
+
+        $exception = null;
+        $promise->then(null, function ($reason) use (&$exception) {
+            $exception = $reason;
+        });
+
+        $this->assertInstanceOf('RuntimeException', $exception);
+        $this->assertEquals('Opening database socket timed out', $exception->getMessage());
+    }
+
     protected function expectCallableNever()
     {
         $mock = $this->createCallableMock();

tests/FunctionalExampleTest.php

@@ -26,7 +26,7 @@ public function testQueryExampleExecutedWithCgiReturnsDefaultValueAfterContentTy
             $this->markTestSkipped('Unable to execute "php-cgi"');
         }
 
-        $output = $this->execExample('php-cgi query.php');
+        $output = $this->execExample('php-cgi -dopcache.jit=off query.php');
 
         $this->assertStringEndsWith("\n\n" . 'value' . "\n" . '42' . "\n", $output);
     }
@@ -55,7 +55,7 @@ public function testQueryExampleExecutedWithCgiAndOpenBasedirRestrictedRunsDefau
             $this->markTestSkipped('Unable to execute "php-cgi" or "php"');
         }
 
-        $output = $this->execExample('php-cgi -dopen_basedir=' . escapeshellarg(dirname(__DIR__)) . ' query.php');
+        $output = $this->execExample('php-cgi -dopcache.jit=off -dopen_basedir=' . escapeshellarg(dirname(__DIR__)) . ' query.php');
 
         $this->assertStringEndsWith("\n\n" . 'value' . "\n" . '42' . "\n", $output);
     }