+
+ /**
+ * This test verifies that after changing the content model
+ * of a page, undoing that edit via the API will also
+ * undo the content model change.
+ */
+ public function testUndoAfterContentModelChange() {
+ $name = 'Help:' . __FUNCTION__;
+ $uploader = self::$users['uploader']->getUser();
+ $sysop = self::$users['sysop']->getUser();
+ $apiResult = $this->doApiRequestWithToken( [
+ 'action' => 'edit',
+ 'title' => $name,
+ 'text' => 'some text',
+ ], null, $sysop )[0];
+
+ // Check success
+ $this->assertArrayHasKey( 'edit', $apiResult );
+ $this->assertArrayHasKey( 'result', $apiResult['edit'] );
+ $this->assertEquals( 'Success', $apiResult['edit']['result'] );
+ $this->assertArrayHasKey( 'contentmodel', $apiResult['edit'] );
+ // Content model is wikitext
+ $this->assertEquals( 'wikitext', $apiResult['edit']['contentmodel'] );
+
+ // Convert the page to JSON
+ $apiResult = $this->doApiRequestWithToken( [
+ 'action' => 'edit',
+ 'title' => $name,
+ 'text' => '{}',
+ 'contentmodel' => 'json',
+ ], null, $uploader )[0];
+
+ // Check success
+ $this->assertArrayHasKey( 'edit', $apiResult );
+ $this->assertArrayHasKey( 'result', $apiResult['edit'] );
+ $this->assertEquals( 'Success', $apiResult['edit']['result'] );
+ $this->assertArrayHasKey( 'contentmodel', $apiResult['edit'] );
+ $this->assertEquals( 'json', $apiResult['edit']['contentmodel'] );
+
+ $apiResult = $this->doApiRequestWithToken( [
+ 'action' => 'edit',
+ 'title' => $name,
+ 'undo' => $apiResult['edit']['newrevid']
+ ], null, $sysop )[0];
+
+ // Check success
+ $this->assertArrayHasKey( 'edit', $apiResult );
+ $this->assertArrayHasKey( 'result', $apiResult['edit'] );
+ $this->assertEquals( 'Success', $apiResult['edit']['result'] );
+ $this->assertArrayHasKey( 'contentmodel', $apiResult['edit'] );
+ // Check that the contentmodel is back to wikitext now.
+ $this->assertEquals( 'wikitext', $apiResult['edit']['contentmodel'] );
+ }