[tests-only] Adds API tests to check the file deletion time

tests/acceptance/features/apiTrashbin/trashbinFilesFolders.feature

@@ -271,3 +271,15 @@ Feature: files and folders exist in the trashbin after being deleted
       | dav-path |
       | old      |
       | new      |
+
+  Scenario Outline: deleted file has appropriate deletion time information 
+    Given using <dav-path> DAV path
+    And user "Alice" has deleted file "textfile0.txt"
+    When user "Alice" tries to list the trashbin content for user "Alice"
+    Then the last webdav response should contain the following elements
+      | path           | mtime         |
+      | /textfile0.txt | deleted_mtime |
+    Examples:
+      | dav-path |
+      | old      |
+      | new      |

tests/acceptance/features/bootstrap/TrashbinContext.php

@@ -260,13 +260,25 @@ public function theLastWebdavResponseShouldContainFollowingElements(TableNode $e
 		foreach ($elementRows as $expectedElement) {
 			$found = false;
 			$expectedPath = $expectedElement['path'];
-			foreach ($files as $file) {
-				if (\ltrim($expectedPath, "/") === \ltrim($file['original-location'], "/")) {
-					$found = true;
-					break;
+			$expectedMtime = $expectedElement['mtime'] === "deleted_mtime" ? $this->featureContext->getLastUploadDeleteTime() : $expectedElement['mtime'];
+
+			if (isset($expectedElement['mtime'])) {
+				foreach ($files as $file) {
+					if (\ltrim($expectedPath, "/") === \ltrim($file['original-location'], "/") && \ltrim($expectedMtime, "/") === \ltrim($file['mtime'], "/")) {
+						$found = true;
+						break;
+					}
+				}
+				Assert::assertTrue($found, "$expectedPath with mtime $expectedMtime expected to be listed in response but not found");
+			} else {
+				foreach ($files as $file) {
+					if (\ltrim($expectedPath, "/") === \ltrim($file['original-location'], "/")) {
+						$found = true;
+						break;
+					}
 				}
+				Assert::assertTrue($found, "$expectedPath expected to be listed in response but not found");
 			}
-			Assert::assertTrue($found, "$expectedPath expected to be listed in response but not found");
 		}
 	}
 

tests/acceptance/features/bootstrap/WebDav.php

@@ -104,6 +104,13 @@ public function setLastUploadDeleteTime($lastUploadDeleteTime) {
 		$this->lastUploadDeleteTime = $lastUploadDeleteTime;
 	}
 
+	/**
+	 * @return number
+	 */
+	public function getLastUploadDeleteTime() {
+		return $this->lastUploadDeleteTime;
+	}
+
 	/**
 	 * @return SimpleXMLElement
 	 */