[IMP] tests: add a test to avoid translations of template strings

When a template string that contains an expression is translated, the
resulting msgid is wrong.

e.g.:

    _t(`blah blah ${expression}`)

will generate a wrong msgid like this:

    msgid "blah blah ${expression}"

With this commit, a new test is added to find and forbid translations of
JS template-strings.

closes odoo/odoo#68165

X-original-commit: 9184ae45e0df179fc093c1fc48a7fa56d8fe9594
Signed-off-by: Christophe Monniez (moc) <moc@odoo.com>

odoo/addons/test_lint/tests/__init__.py

@@ -4,3 +4,4 @@ from . import test_ecmascript
 from . import test_markers
 from . import test_onchange_domains
 from . import test_dunderinit
+from . import test_jstranslate

odoo/addons/test_lint/tests/test_jstranslate.py

@@ -0,0 +1,79 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+import logging
+import re
+
+from odoo import tools
+from odoo.modules import get_resource_from_path
+
+from . import lint_case
+
+_logger = logging.getLogger(__name__)
+
+TSTRING_RE = re.compile(r'_l?t\(\s*`.*?\s*`\s*\)', re.DOTALL)
+EXPRESSION_RE = re.compile(r'\$\{.+?\}')
+
+class TestJsTranslations(lint_case.LintCase):
+
+    def check_text(self, text):
+        """ Search for translated template strings that contains an expression
+            :param text: The js text to search
+            :return: A list of tuple with line number and invalid template string or an empty list
+        """
+        error_list = list()
+        for m in TSTRING_RE.finditer(text):
+            template_string = m.group(0)
+            if EXPRESSION_RE.search(template_string):
+                line_nb = text[:m.start()].count('\n') + 1
+                error_list.append((line_nb, template_string))
+        return error_list
+
+    def test_regular_expression(self):
+        bad_js = """
+        const foo = {
+            valid: _lt(`not useful but valid template-string`),
+            invalid: _lt(`invalid template-string
+            that spans multiple lines ${expression}`)
+        };
+        """
+        error_list = self.check_text(bad_js)
+        self.assertEqual(len(error_list), 1)
+        for line, template_string in error_list:
+            template_string = error_list[0][1]
+            self.assertIn('invalid template-string', template_string)
+            self.assertNotIn('but valid template-string', template_string)
+            self.assertEqual(line, 4)
+
+    def test_regular_expression_long(self):
+        bad_js = """
+        thing = _t(
+            `foo ${this + is(a, very) - long == expression}`
+        );
+        """
+
+        error_list = self.check_text(bad_js)
+        self.assertEqual(len(error_list), 1)
+        for line, template_string in error_list:
+            template_string = error_list[0][1]
+            self.assertIn('foo ${this + is(a, very) - long == expression}', template_string)
+            self.assertEqual(line, 2)
+
+    def test_js_translations(self):
+        """ Test that there are no translation of JS template strings """
+
+        counter = 0
+        failures = 0
+        for js_file in self.iter_module_files('*.js'):
+            counter += 1
+            with tools.file_open(js_file, 'r') as f:
+                js_txt = f.read()
+                error_list = self.check_text(js_txt)
+                for line_number, template_string in error_list:
+                    failures += 1
+                    mod, relative_path, _ = get_resource_from_path(js_file)
+                    _logger.error("Translation of a template string found in `%s/%s` at line %s: %s", mod, relative_path, line_number, template_string)
+
+        _logger.info('%s files tested', counter)
+        if failures > 0:
+            self.fail("%s invalid template strings found in js files." % failures)