Add tests for CompileOnly class

Author: thekid

src/test/php/lang/ast/unittest/cli/CompileOnlyTest.class.php

@@ -0,0 +1,23 @@
+<?php namespace lang\ast\unittest\cli;
+
+use unittest\Test;
+use xp\compiler\CompileOnly;
+
+class CompileOnlyTest {
+
+  #[Test]
+  public function can_create() {
+    new CompileOnly();
+  }
+
+  #[Test]
+  public function write_to_stream() {
+    $fixture= new CompileOnly();
+    with ($fixture->target('Test.php'), function($out) {
+      $out->write('<?php class Test { }');
+      $out->flush();
+      $out->close();
+    });
+    $fixture->close();
+  }
+}

src/test/php/lang/ast/unittest/cli/ToStreamTest.class.php

@@ -1,7 +1,7 @@
 <?php namespace lang\ast\unittest\cli;
 
 use io\streams\MemoryOutputStream;
-use unittest\{After, Assert, Before, Test};
+use unittest\{Assert, Test};
 use xp\compiler\ToStream;
 
 class ToStreamTest {