improve unit testing approach

Unit tests were moved to their own subdirectory.
Fixtures common to many unit tests were moved to test/unit/conftest.py.
A facility to execute scripts in page's global scope was added.
A workaround was employed to present information about errors in injected scripts.
Sample unit tests for regexes in common/patterns.js were added.

1 files changed, 41 insertions, 0 deletions

diff --git a/test/unit/test_basic.py b/test/unit/test_basic.py
new file mode 100644
index 0000000..cbe5c8c
--- /dev/null
+++ b/test/unit/test_basic.py
@@ -0,0 +1,41 @@
+# SPDX-License-Identifier: CC0-1.0
+
+"""
+Haketilo unit tests - base
+"""
+
+# This file is part of Haketilo
+#
+# Copyright (C) 2021, Wojtek Kosior
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the CC0 1.0 Universal License as published by
+# the Creative Commons Corporation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# CC0 1.0 Universal License for more details.
+
+import pytest
+
+def test_driver(driver):
+    """
+    A trivial test case that verifies mocked web pages served by proxy can be
+    accessed by the browser driven.
+    """
+    for proto in ['http://', 'https://']:
+        driver.get(proto + 'gotmyowndoma.in')
+        element = driver.find_element_by_tag_name('title')
+        title = driver.execute_script('return arguments[0].innerText;', element)
+        assert "Schrodinger's Document" in title
+
+def test_script_loader(execute_in_page, load_into_page):
+    """
+    A trivial test case that verifies Haketilo's .js files can be properly
+    loaded into a test page together with their dependencies.
+    """
+    load_into_page('common/stored_types.js', ['common'],
+                   page='https://gotmyowndoma.in')
+
+    assert execute_in_page('returnval(TYPE_PREFIX.VAR);') == '_'