1 files changed, 80 insertions, 0 deletions
diff --git a/tests/unit/Widget/HelpindexTest.php b/tests/unit/Widget/HelpindexTest.php
new file mode 100644
index 000000000..a8b51172b
--- /dev/null
+++ b/tests/unit/Widget/HelpindexTest.php
@@ -0,0 +1,80 @@
+<?php
+/**
+ * Tests for the Helpindex widget.
+ *
+ * SPDX-FileCopyrightText: 2024 Harald Eilertsen
+ * SPDX-FileCopyrightText: 2024 Hubzilla Community
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+/**
+ * Test class for testing the Helpindex widget.
+ */
+class HelpindexTest extends \Zotlabs\Tests\Unit\Module\TestCase {
+
+	use \phpmock\phpunit\PHPMock;
+
+	/**
+	 * Define the stubs to make sure they work later in the test.
+	 *
+	 * @see https://php-mock.github.io/php-mock-phpunit/api/class-phpmock.phpunit.PHPMock.html#_defineFunctionMock
+	 *
+	 * @beforeClass
+	 */
+	public static function define_stubs(): void {
+		\phpmock\phpunit\PHPMock::defineFunctionMock('Zotlabs\Lib\Traits', 'file_exists');
+		\phpmock\phpunit\PHPMock::defineFunctionMock('Zotlabs\Widget', 'file_get_contents');
+	}
+
+	public function test_loading_toc(): void {
+		// Stub `file_get_contents` to plant our own content.
+		$fgc_stub = $this->getFunctionMock('Zotlabs\Widget', 'file_get_contents');
+		$fgc_stub
+			->expects($this->once())
+			->with($this->equalTo('doc/en/toc.html'))
+			->willReturn('toc');
+
+		// Stub `file_exists` to only return true for the english toc file
+		$fe_stub = $this->getFunctionMock('Zotlabs\Lib\Traits', 'file_exists');
+		$fe_stub
+			->expects($this->any())
+			->willReturnCallback(fn (string $path) => $path === 'doc/en/toc.html' );
+
+		$this->render_widget();
+		$this->assertOutputContains('toc');
+		$this->assertOutputContains('Help Content');
+	}
+
+	public function test_that_result_is_empty_when_toc_not_present(): void {
+		// Ensure `file_get_contents` is not called during the test.
+		$fgc_stub = $this->getFunctionMock('Zotlabs\Widget', 'file_get_contents');
+		$fgc_stub->expects($this->never());
+
+		// Stub `file_exists` to always return false to simulate that we
+		// can't find the toc file.
+		$fe_stub = $this->getFunctionMock('Zotlabs\Lib\Traits', 'file_exists');
+		$fe_stub
+			->expects($this->any())
+			->willReturn(false);
+
+		$this->render_widget();
+	}
+
+	/**
+	 * Initializes the app and calls the widget code.
+	 */
+	private function render_widget(): void {
+		$_GET['q'] = 'help/en/about/about';
+		$_SERVER['REQUEST_METHOD'] = 'GET';
+
+		\App::init();
+
+		$widget = new \Zotlabs\Widget\Helpindex();
+		$this->output = $widget->widget([]);
+	}
+
+	private function assertOutputContains(string $needle): void {
+		$this->assertStringContainsString($needle, $this->output);
+	}
+}