Refactoring DBA-mocking tests

- Reducing DB-dependencies
- Creating DB-cache mocks
- Creating DB-lock mocks
- Switching to mocked dependencies for Cache/Lock/App

tests/Util/DateTimeFormatMockTrait.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace Friendica\Test\Util;
+
+use Mockery\MockInterface;
+
+trait DateTimeFormatMockTrait
+{
+	/**
+	 * @var MockInterface The mocking interface of Friendica\Database\DBA
+	 */
+	private $dtfMock;
+
+	public function mockUtcNow($time, $times = null)
+	{
+		if (!isset($this->dtfMock)) {
+			$this->dtfMock = \Mockery::mock('alias:Friendica\Util\DateTimeFormat');
+		}
+
+		$this->dtfMock
+			->shouldReceive('utcNow')
+			->andReturn($time)
+			->times($times);
+	}
+
+	public function mockUtc($input, $time, $times = null)
+	{
+		if (!isset($this->dtfMock)) {
+			$this->dtfMock = \Mockery::mock('alias:Friendica\Util\DateTimeFormat');
+		}
+
+		$this->dtfMock
+			->shouldReceive('utc')
+			->with($input)
+			->andReturn($time)
+			->times($times);
+	}
+}