Add pact folder to git ignore.

.php_cs

@@ -120,7 +120,6 @@ return PhpCsFixer\Config::create()
             'return_type_declaration' => ['space_before' => 'none'],
             'self_accessor' => true,
             'short_scalar_cast' => true,
-            'simplified_null_return' => true,
             'single_blank_line_at_eof' => true,
             'single_import_per_statement' => true,
             'single_line_after_imports' => true,

src/PhpPact/Standalone/Exception/MissingEnvVariableException.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace PhpPact\Consumer\Exception;
+
+use Exception;
+
+/**
+ * Exception for a required environmental variable.
+ * Class MissingEnvVariableException
+ */
+class MissingEnvVariableException extends Exception
+{
+    public function __construct(string $variableName)
+    {
+        parent::__construct("Please provide required environmental variable {$variableName}!", 0, null);
+    }
+}

src/PhpPact/Standalone/Installer/InstallManager.php

@@ -28,7 +28,7 @@ class InstallManager
 
     public function __construct()
     {
-        $this->destinationDir = __DIR__.'/../../../../';
+        $this->destinationDir = __DIR__ . '/../../../..';
         $this
             ->registerInstaller(new InstallerWindows())
             ->registerInstaller(new InstallerMac())

src/PhpPact/Standalone/MockService/MockServerConfig.php

@@ -186,7 +186,7 @@ public function getPactDir()
     /**
      * @inheritDoc
      */
-    public function setPactDir(string $pactDir): MockServerConfigInterface
+    public function setPactDir($pactDir): MockServerConfigInterface
     {
         $this->pactDir = $pactDir;
 

src/PhpPact/Standalone/MockService/MockServerConfigInterface.php

@@ -81,11 +81,11 @@ public function setProvider(string $provider): self;
     public function getPactDir();
 
     /**
-     * @param string $pactDir url to place the pact files when written to disk
+     * @param null|string $pactDir url to place the pact files when written to disk
      *
      * @return MockServerConfigInterface
      */
-    public function setPactDir(string $pactDir): self;
+    public function setPactDir($pactDir): self;
 
     /**
      * @return string 'merge' or 'overwrite' merge means that interactions are added and overwrite means that the entire file is overwritten

src/PhpPact/Standalone/MockService/MockServerEnvConfig.php

@@ -2,15 +2,43 @@
 
 namespace PhpPact\Standalone\MockService;
 
+use PhpPact\Consumer\Exception\MissingEnvVariableException;
+
+/**
+ * An environment variable based mock server configuration.
+ * Class MockServerEnvConfig
+ */
 class MockServerEnvConfig extends MockServerConfig
 {
     public function __construct()
     {
         $this
-            ->setHost(\getenv('PACT_MOCK_SERVER_HOST'))
-            ->setPort(\getenv('PACT_MOCK_SERVER_PORT'))
-            ->setConsumer(\getenv('PACT_CONSUMER_NAME'))
-            ->setProvider(\getenv('PACT_PROVIDER_NAME'))
-            ->setPactDir(\getenv('PACT_OUTPUT_DIR'));
+            ->setHost($this->parseEnv('PACT_MOCK_SERVER_HOST'))
+            ->setPort($this->parseEnv('PACT_MOCK_SERVER_PORT'))
+            ->setConsumer($this->parseEnv('PACT_CONSUMER_NAME'))
+            ->setProvider($this->parseEnv('PACT_PROVIDER_NAME'))
+            ->setPactDir($this->parseEnv('PACT_OUTPUT_DIR', false));
+    }
+
+    /**
+     * Parse environmental variables to be either null if not required or throw an error if required.
+     *
+     * @param string $variableName
+     * @param bool   $required
+     *
+     * @throws MissingEnvVariableException
+     *
+     * @return null|string
+     */
+    private function parseEnv(string $variableName, bool $required = true)
+    {
+        if (\getenv($variableName) !== false) {
+            return \getenv($variableName);
+        }
+        if ($required === true) {
+            throw new MissingEnvVariableException($variableName);
+        }
+
+        return null;
     }
 }