Add wp_add_inline_script gnarly tests

Author: sirreal

tests/phpunit/tests/dependencies/scripts.php

@@ -4122,4 +4122,56 @@ public function test_wp_scripts_doing_it_wrong_for_missing_dependencies() {
 			'Expected _doing_it_wrong() notice to indicate missing dependencies for enqueued script.'
 		);
 	}
+
+	/**
+	 * @ticket TBD
+	 * @covers ::wp_add_inline_script
+	 */
+	public function test_gnarly_inline_script_requires_escaping() {
+		$this->add_html5_script_theme_support();
+		wp_enqueue_script( 'test-inline-script-after', 'http://example.org/script.js', array(), null );
+		$javascript = <<<'JS'
+var script;
+0</script/>0;'<!--';console.assert(1<script>=0);
+JS;
+		wp_add_inline_script( 'test-inline-script-after', $javascript, 'after' );
+		$output   = get_echo( 'wp_print_scripts' );
+		$expected = <<<'HTML'
+<script src="http://example.org/script.js" id="test-inline-script-after-js"></script>
+<script id="test-inline-script-after-js-after">
+var script;
+0</\u0073cript/>0;'<!--';console.assert(1<\u0073cript>=0);
+//# sourceURL=test-inline-script-after-js-after
+</script>
+HTML;
+
+		$this->assertEqualHTML( $expected, $output );
+	}
+
+	/**
+	 * @ticket TBD
+	 * @covers ::wp_add_inline_script
+	 *
+	 * @expectedIncorrectUsage wp_add_inline_script
+	 */
+	public function test_gnarly_inline_script_requires_escaping_with_wrapper() {
+		$this->add_html5_script_theme_support();
+		wp_enqueue_script( 'test-inline-script-after', 'http://example.org/script.js', array(), null );
+		$javascript = <<<'JS'
+<script>
+// Uh oh:</script>
+</script>
+JS;
+		wp_add_inline_script( 'test-inline-script-after', $javascript, 'after' );
+		$output   = get_echo( 'wp_print_scripts' );
+		$expected = <<<'HTML'
+<script src="http://example.org/script.js" id="test-inline-script-after-js"></script>
+<script id="test-inline-script-after-js-after">
+// Uh oh:
+//# sourceURL=test-inline-script-after-js-after
+</script>
+HTML;
+
+		$this->assertEqualHTML( $expected, $output );
+	}
 }