static/js/common: Extract function adjust_mac_shortcuts.

frontend_tests/node_tests/common.js

@@ -17,6 +17,15 @@ $(input).val = (arg) => {
 
 zrequire('common');
 
+function get_key_stub_html(key_text, expected_key, obj_name) {
+    const key_stub = $.create(obj_name);
+    key_stub.text(key_text);
+    key_stub.expected_key = function () {
+        return expected_key;
+    };
+    return key_stub;
+}
+
 run_test('basics', () => {
     common.autofocus('#home');
     assert($('#home').is_focused());
@@ -48,3 +57,60 @@ run_test('copy_data_attribute_value', () => {
     };
     common.copy_data_attribute_value(elem, 'admin-emails');
 });
+
+run_test('adjust_mac_shortcuts', () => {
+    const keys_to_test_mac = new Map([
+        ['Backspace', 'Delete'],
+        ['Enter', 'Return'],
+        ['Home', 'Fn + ←'],
+        ['End', 'Fn + →'],
+        ['PgUp', 'Fn + ↑'],
+        ['PgDn', 'Fn + ↓'],
+        ['X + Shift', 'X + Shift'],
+        ['⌘ + Return', '⌘ + Return'],
+        ['Enter or Backspace', "Return or Delete"],
+    ]);
+    const keys_to_test_non_mac = new Map([
+        ['Backspace', 'Backspace'],
+        ['Enter', 'Enter'],
+        ['Home', 'Home'],
+        ['End', 'End'],
+        ['PgUp', 'PgUp'],
+        ['PgDn', 'PgDn'],
+        ['X + Shift', 'X + Shift'],
+        ['⌘ + Return', '⌘ + Return'],
+    ]);
+
+    var key_no;
+    var keys_elem_list = [];
+
+    common.has_mac_keyboard = function () { return false; };
+    key_no = 1;
+    keys_to_test_non_mac.forEach(function (value, key) {
+        keys_elem_list.push(get_key_stub_html(key, value, "hotkey_non_mac_" + key_no));
+        key_no += 1;
+    });
+
+    common.adjust_mac_shortcuts(".markdown_content");
+    keys_elem_list.forEach(function (key_elem) {
+        assert(key_elem.text(), key_elem.expected_key());
+    });
+
+    keys_elem_list = [];
+    key_no = 1;
+    common.has_mac_keyboard = function () { return true; };
+    keys_to_test_mac.forEach(function (value, key) {
+        keys_elem_list.push(get_key_stub_html(key, value, "hotkey_" + key_no));
+        key_no += 1;
+    });
+
+    $(".markdown_content").each = (f) => {
+        for (var key_id = 0; key_id < keys_elem_list.length; key_id += 1) {
+            f.call(keys_elem_list[key_id]);
+        }
+    };
+    common.adjust_mac_shortcuts(".markdown_content");
+    keys_elem_list.forEach(function (key_elem) {
+        assert.equal(key_elem.text(), key_elem.expected_key());
+    });
+});