Add test case to add plugin suppression detail in plugin meta

tests/php/test-class-amp-plugins.php

@@ -0,0 +1,117 @@
+<?php
+/**
+ * Test cases for AMP_Plugins class.
+ *
+ * @package AMP
+ * @since   2.2.2
+ */
+
+use AmpProject\AmpWP\Tests\TestCase;
+
+/**
+ * Tests for AMP_Plugins.
+ *
+ * @package AMP
+ * @coversDefaultClass AMP_Plugins
+ */
+class Test_AMP_Plugins extends TestCase {
+
+	/**
+	 * @var AMP_Plugins
+	 */
+	protected $instance;
+
+	/**
+	 * Setup method.
+	 */
+	public function setUp() {
+
+		parent::setUp();
+
+		$this->instance = new AMP_Plugins();
+	}
+
+	/**
+	 * @covers ::init()
+	 */
+	public function test_init() {
+
+		$this->instance->init();
+		$this->assertFalse( has_filter( 'plugin_row_meta', [ $this->instance, 'filter_plugin_row_meta' ] ) );
+
+		set_current_screen( 'index.php' );
+		$this->instance->init();
+		$this->assertEquals(
+			10,
+			has_filter( 'plugin_row_meta', [ $this->instance, 'filter_plugin_row_meta' ] )
+		);
+
+		set_current_screen( 'front' );
+	}
+
+	/**
+	 * Data provider for $this->test_filter_plugin_row_meta()
+	 *
+	 * @return array[]
+	 */
+	public function data_provider_for_filter_plugin_row_meta() {
+
+		return [
+			'plugin is not suppressed'          => [
+				'plugin_file'   => 'plugin.php',
+				'plugin_data'   => [],
+				'is_suppressed' => false,
+			],
+			'plugin is suppressed'              => [
+				'plugin_file'   => 'plugin-one/plugin-one.php',
+				'plugin_data'   => [
+					'slug' => 'plugin-one',
+				],
+				'is_suppressed' => true,
+			],
+			'plugin is suppressed without slug' => [
+				'plugin_file'   => 'plugin-one/plugin-one.php',
+				'plugin_data'   => [],
+				'is_suppressed' => true,
+			],
+		];
+
+	}
+
+	/**
+	 * @dataProvider data_provider_for_filter_plugin_row_meta()
+	 * @covers ::get_suppressed_plugins()
+	 * @covers ::filter_plugin_row_meta()
+	 */
+	public function test_filter_plugin_row_meta( $plugin_file, $plugin_data, $is_suppressed ) {
+
+		// Mock AMP option.
+		AMP_Options_Manager::update_option(
+			'suppressed_plugins',
+			[
+				'plugin-one' => [
+					'last_version' => '1.0',
+					'timestamp'    => 1646316249,
+					'username'     => 'user1',
+				],
+			]
+		);
+
+		$output = $this->instance->filter_plugin_row_meta( [], $plugin_file, $plugin_data );
+
+		if ( $is_suppressed ) {
+
+			$this->assertEquals(
+				sprintf(
+					'<a href="%s" aria-label="%s" target="_blank">%s</a>',
+					esc_url( admin_url( 'admin.php?page=amp-options' ) ),
+					esc_attr__( 'Visit AMP Settings', 'amp' ),
+					__( 'Suppressed on AMP Pages', 'amp' )
+				),
+				$output[0]
+			);
+		} else {
+			$this->assertEmpty( $output );
+		}
+	}
+}