Add tests for util.log.LogObserver

Author: thekid

src/test/php/util/log/unittest/LogObserverTest.class.php

@@ -0,0 +1,25 @@
+<?php namespace util\log\unittest;
+
+use unittest\TestCase;
+use util\Observable;
+use util\log\LogCategory;
+use util\log\LogObserver;
+
+class LogObserverTest extends TestCase {
+
+  #[@test]
+  public function can_create() {
+    new LogObserver(new LogCategory('test'));
+  }
+
+  #[@test]
+  public function update_calls_debug() {
+    $called= [];
+    $l= new LogObserver(newinstance(LogCategory::class, ['test'], [
+      'debug' => function(... $args) use(&$called) { $called[]= $args; }
+    ]));
+    $l->update(new Observable(), 'Test');
+
+    $this->assertEquals([['Test']], $called);
+  }
+}