Add coverage annotations

Windows only classes cause havoc with coverage numbers… open to suggestions on how to fix but at least now it won't look like we didn't even try testing. :-P

lib/Internal/Posix/Handle.php

@@ -5,6 +5,7 @@ namespace Amp\Process\Internal\Posix;
 use Amp\Deferred;
 use Amp\Process\Internal\ProcessHandle;
 
+/** @internal */
 final class Handle extends ProcessHandle {
     public function __construct() {
         $this->pidDeferred = new Deferred;

lib/Internal/Posix/Runner.php

@@ -14,6 +14,7 @@ use Amp\Process\ProcessInputStream;
 use Amp\Process\ProcessOutputStream;
 use Amp\Promise;
 
+/** @internal */
 final class Runner implements ProcessRunner {
     const FD_SPEC = [
         ["pipe", "r"], // stdin

lib/Internal/Windows/Handle.php

@@ -5,6 +5,10 @@ namespace Amp\Process\Internal\Windows;
 use Amp\Deferred;
 use Amp\Process\Internal\ProcessHandle;
 
+/**
+ * @internal
+ * @codeCoverageIgnore Windows only.
+ */
 final class Handle extends ProcessHandle {
     public function __construct() {
         $this->joinDeferred = new Deferred;

lib/Internal/Windows/HandshakeStatus.php

@@ -2,6 +2,10 @@
 
 namespace Amp\Process\Internal\Windows;
 
+/**
+ * @internal
+ * @codeCoverageIgnore Windows only.
+ */
 final class HandshakeStatus {
     const SUCCESS = 0;
     const SIGNAL_UNEXPECTED = 0x01;

lib/Internal/Windows/PendingSocketClient.php

@@ -4,6 +4,10 @@ namespace Amp\Process\Internal\Windows;
 
 use Amp\Struct;
 
+/**
+ * @internal
+ * @codeCoverageIgnore Windows only.
+ */
 final class PendingSocketClient {
     use Struct;
 

lib/Internal/Windows/Runner.php

@@ -13,6 +13,10 @@ use Amp\Process\ProcessOutputStream;
 use Amp\Promise;
 use const Amp\Process\BIN_DIR;
 
+/**
+ * @internal
+ * @codeCoverageIgnore Windows only.
+ */
 final class Runner implements ProcessRunner {
     const FD_SPEC = [
         ["pipe", "r"], // stdin

lib/Internal/Windows/SignalCode.php

@@ -2,6 +2,10 @@
 
 namespace Amp\Process\Internal\Windows;
 
+/**
+ * @internal
+ * @codeCoverageIgnore Windows only.
+ */
 final class SignalCode {
     const HANDSHAKE = 0x01;
     const HANDSHAKE_ACK = 0x02;

lib/Internal/Windows/SocketConnector.php

@@ -8,6 +8,10 @@ use Amp\Loop;
 use Amp\Process\Internal\ProcessStatus;
 use Amp\Process\ProcessException;
 
+/**
+ * @internal
+ * @codeCoverageIgnore Windows only.
+ */
 final class SocketConnector {
     const SERVER_SOCKET_URI = 'tcp://127.0.0.1:0';
     const SECURITY_TOKEN_SIZE = 16;