add a mapping/resources installation dialog

8 files changed, 593 insertions, 58 deletions

diff --git a/test/unit/test_CORS_bypass_server.py b/test/unit/test_CORS_bypass_server.py
index 8b845b9..45e4ebb 100644
--- a/test/unit/test_CORS_bypass_server.py
+++ b/test/unit/test_CORS_bypass_server.py
@@ -97,7 +97,7 @@ def test_CORS_bypass_server(driver, execute_in_page):
     assert set(results['invalid'].keys()) == {'error'}
 
     assert set(results['nonexistent'].keys()) == \
-        {'ok', 'status', 'text', 'error-json'}
+        {'ok', 'status', 'text', 'error_json'}
     assert results['nonexistent']['ok'] == False
     assert results['nonexistent']['status'] == 404
     assert results['nonexistent']['text'] == 'Handler for this URL not found.'
diff --git a/test/unit/test_indexeddb.py b/test/unit/test_indexeddb.py
index 07b620c..aea633b 100644
--- a/test/unit/test_indexeddb.py
+++ b/test/unit/test_indexeddb.py
@@ -78,7 +78,7 @@ def test_haketilodb_item_modifications(driver, execute_in_page):
 
     execute_in_page(
         '''{
-        const promise = start_items_transaction(["resources"], arguments[1])
+        const promise = start_items_transaction(["resource"], arguments[1])
             .then(ctx => save_item(arguments[0], ctx).then(() => ctx))
             .then(finalize_transaction);
         returnval(promise);
@@ -97,8 +97,8 @@ def test_haketilodb_item_modifications(driver, execute_in_page):
     assert set([uses['hash_key'] for uses in database_contents['file_uses']]) \
         == set([file['hash_key'] for file in database_contents['files']])
 
-    assert database_contents['mappings'] == []
-    assert database_contents['resources'] == [sample_item]
+    assert database_contents['mapping'] == []
+    assert database_contents['resource'] == [sample_item]
 
     # See if trying to add an item without providing all its files ends in an
     # exception and aborts the transaction as it should.
@@ -111,7 +111,7 @@ def test_haketilodb_item_modifications(driver, execute_in_page):
         async function try_add_item()
         {
             const context =
-                await start_items_transaction(["resources"], args[1]);
+                await start_items_transaction(["resource"], args[1]);
             try {
                 await save_item(args[0], context);
                 await finalize_transaction(context);
@@ -137,7 +137,7 @@ def test_haketilodb_item_modifications(driver, execute_in_page):
     sample_item = make_sample_mapping()
     database_contents = execute_in_page(
         '''{
-        const promise = start_items_transaction(["mappings"], arguments[1])
+        const promise = start_items_transaction(["mapping"], arguments[1])
             .then(ctx => save_item(arguments[0], ctx).then(() => ctx))
             .then(finalize_transaction);
         returnval(promise);
@@ -161,9 +161,9 @@ def test_haketilodb_item_modifications(driver, execute_in_page):
     assert files == dict([(file['hash_key'], file['contents'])
                           for file in sample_files_list])
 
-    del database_contents['resources'][0]['source_copyright'][0]['extra_prop']
-    assert database_contents['resources'] == [make_sample_resource()]
-    assert database_contents['mappings']  == [sample_item]
+    del database_contents['resource'][0]['source_copyright'][0]['extra_prop']
+    assert database_contents['resource'] == [make_sample_resource()]
+    assert database_contents['mapping']  == [sample_item]
 
     # Try removing the items to get an empty database again.
     results = [None, None]
@@ -172,7 +172,7 @@ def test_haketilodb_item_modifications(driver, execute_in_page):
             f'''{{
             const remover = remove_{item_type};
             const promise =
-                start_items_transaction(["{item_type}s"], {{}})
+                start_items_transaction(["{item_type}"], {{}})
                 .then(ctx => remover('helloapple', ctx).then(() => ctx))
                 .then(finalize_transaction);
             returnval(promise);
@@ -193,8 +193,8 @@ def test_haketilodb_item_modifications(driver, execute_in_page):
     assert files == dict([(file['hash_key'], file['contents'])
                           for file in sample_files_list])
 
-    assert results[0]['resources'] == []
-    assert results[0]['mappings'] == [sample_item]
+    assert results[0]['resource'] == []
+    assert results[0]['mapping'] == [sample_item]
 
     assert results[1] == dict([(key, []) for key in  results[0].keys()])
 
@@ -223,8 +223,8 @@ def test_haketilodb_item_modifications(driver, execute_in_page):
     execute_in_page('initial_data = arguments[0];', initial_data)
     database_contents = get_db_contents(execute_in_page)
 
-    assert database_contents['resources'] == [sample_resource]
-    assert database_contents['mappings']  == [sample_mapping]
+    assert database_contents['resource'] == [sample_resource]
+    assert database_contents['mapping']  == [sample_mapping]
 
 @pytest.mark.get_page('https://gotmyowndoma.in')
 def test_haketilodb_settings(driver, execute_in_page):
@@ -407,8 +407,8 @@ def test_haketilodb_track(driver, execute_in_page, wait_elem_text):
         }''')
     assert item_counts == [1 for _ in item_counts]
     for elem_id, json_value in [
-            ('resources_helloapple', sample_resource),
-            ('mappings_helloapple', sample_mapping),
+            ('resource_helloapple', sample_resource),
+            ('mapping_helloapple', sample_mapping),
             ('settings_option15', {'name': 'option15', 'value': '123'}),
             ('repos_https://hydril.la', {'url': 'https://hydril.la'}),
             ('blocking_file:///*', {'pattern': 'file:///*', 'allow': False})
@@ -442,8 +442,8 @@ def test_haketilodb_track(driver, execute_in_page, wait_elem_text):
     driver.switch_to.window(windows[0])
     driver.implicitly_wait(10)
     for elem_id, json_value in [
-            ('resources_helloapple-copy', sample_resource2),
-            ('mappings_helloapple-copy', sample_mapping2),
+            ('resource_helloapple-copy', sample_resource2),
+            ('mapping_helloapple-copy', sample_mapping2),
             ('settings_option22', {'name': 'option22', 'value': 'abc'}),
             ('repos_https://hydril2.la', {'url': 'https://hydril2.la'}),
             ('blocking_ftp://a.bc/', {'pattern': 'ftp://a.bc/', 'allow': True})
@@ -457,7 +457,7 @@ def test_haketilodb_track(driver, execute_in_page, wait_elem_text):
         '''{
         async function change_remove_items()
         {
-            const store_names = ["resources", "mappings"];
+            const store_names = ["resource", "mapping"];
             const ctx = await start_items_transaction(store_names, {});
             await remove_resource("helloapple", ctx);
             await remove_mapping("helloapple-copy", ctx);
@@ -470,7 +470,7 @@ def test_haketilodb_track(driver, execute_in_page, wait_elem_text):
         returnval(change_remove_items());
         }''')
 
-    removed_ids = ['mappings_helloapple-copy', 'resources_helloapple',
+    removed_ids = ['mapping_helloapple-copy', 'resource_helloapple',
                    'repos_https://hydril.la', 'blocking_file:///*']
     def condition_items_absent_and_changed(driver):
         for id in removed_ids:
diff --git a/test/unit/test_install.py b/test/unit/test_install.py
new file mode 100644
index 0000000..cb8fe36
--- /dev/null
+++ b/test/unit/test_install.py
@@ -0,0 +1,429 @@
+# SPDX-License-Identifier: CC0-1.0
+
+"""
+Haketilo unit tests - item installation dialog
+"""
+
+# This file is part of Haketilo
+#
+# Copyright (C) 2022 Wojtek Kosior <koszko@koszko.org>
+#
+# 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
+import json
+from selenium.webdriver.support.ui import WebDriverWait
+
+from ..extension_crafting import ExtraHTML
+from ..script_loader import load_script
+from .utils import *
+
+def content_script():
+    script = load_script('content/repo_query_cacher.js')
+    return f'{script}; {tab_id_asker}; start();'
+
+def background_script():
+    script = load_script('background/broadcast_broker.js',
+                         '#IMPORT background/CORS_bypass_server.js')
+    return f'{script}; {tab_id_responder}; start(); CORS_bypass_server.start();'
+
+def setup_view(driver, execute_in_page):
+    tab_id = run_content_script_in_new_window(driver, 'https://gotmyowndoma.in')
+
+    execute_in_page(load_script('html/install.js'))
+    container_ids, containers_objects = execute_in_page(
+        '''
+        const cb_calls = [];
+        const install_view = new InstallView(arguments[0],
+                                             () => cb_calls.push("show"),
+                                             () => cb_calls.push("hide"));
+        document.body.append(install_view.main_div);
+        const ets = () => install_view.item_entries;
+        const shw = slice => [cb_calls.slice(slice || 0), install_view.shown];
+        returnval([container_ids, container_ids.map(cid => install_view[cid])]);
+        ''',
+        tab_id)
+
+    containers = dict(zip(container_ids, containers_objects))
+
+    def assert_container_displayed(container_id):
+        for cid, cobj in zip(container_ids, containers_objects):
+            assert (cid == container_id) == cobj.is_displayed()
+
+    return containers, assert_container_displayed
+
+install_ext_data = {
+    'content_script': content_script,
+    'background_script': background_script,
+    'extra_html': ExtraHTML('html/install.html', {}),
+    'navigate_to': 'html/install.html'
+}
+
+@pytest.mark.ext_data(install_ext_data)
+@pytest.mark.usefixtures('webextension')
+@pytest.mark.parametrize('complex_variant', [False, True])
+def test_install_normal_usage(driver, execute_in_page, complex_variant):
+    """
+    Test of the normal package installation procedure with one mapping and,
+    depending on parameter, one or many resources.
+    """
+    containers, assert_container_displayed = setup_view(driver, execute_in_page)
+
+    assert execute_in_page('returnval(shw());') == [[], False]
+
+    if complex_variant:
+        # The resource/mapping others depend on.
+        root_id = 'abcd-defg-ghij'
+        root_resource_id = f'resource_{root_id}'
+        root_mapping_id = f'mapping_{root_id}'
+        # Those ids are used to check the alphabetical ordering.
+        resource_ids = [f'resource_{letters}' for letters in (
+            'a', 'abcd', root_id, 'b', 'c',
+            'd', 'defg', 'e', 'f',
+            'g', 'ghij', 'h', 'i', 'j'
+        )]
+        files_count = 9
+    else:
+        root_resource_id = f'resource_a'
+        root_mapping_id = f'mapping_a'
+        resource_ids = [root_resource_id]
+        files_count = 0
+
+    # Preview the installation of a resource, show resource's details, close
+    # the details and cancel installation.
+    execute_in_page('returnval(install_view.show(...arguments));',
+                    'https://hydril.la/', 'resource', root_resource_id)
+
+    assert execute_in_page('returnval(shw());') == [['show'], True]
+    assert f'{root_resource_id}-2021.11.11-1'\
+        in containers['install_preview'].text
+    assert_container_displayed('install_preview')
+
+    entries = execute_in_page('returnval(ets().map(e => e.main_li.innerText));')
+    assert len(entries) == len(resource_ids)
+    # Verify alphabetical ordering.
+    assert all([id in text for id, text in zip(resource_ids, entries)])
+
+    assert not execute_in_page('returnval(ets()[0].old_ver);').is_displayed()
+    execute_in_page('returnval(ets()[0].details_but);').click()
+    assert 'resource_a' in containers['resource_preview_container'].text
+    assert_container_displayed('resource_preview_container')
+
+    execute_in_page('returnval(install_view.resource_back_but);').click()
+    assert_container_displayed('install_preview')
+
+    assert execute_in_page('returnval(shw());') == [['show'], True]
+    execute_in_page('returnval(install_view.cancel_but);').click()
+    assert execute_in_page('returnval(shw());') == [['show', 'hide'], False]
+
+    # Preview the installation of a mapping and a resource, show mapping's
+    # details, close the details and commit the installation.
+    execute_in_page('returnval(install_view.show(...arguments));',
+                    'https://hydril.la/', 'mapping',
+                    root_mapping_id, [2022, 5, 10])
+
+    assert execute_in_page('returnval(shw(2));') == [['show'], True]
+    assert_container_displayed('install_preview')
+
+    entries = execute_in_page('returnval(ets().map(e => e.main_li.innerText));')
+    assert len(entries) == len(resource_ids) + 1
+    assert f'{root_mapping_id}-2022.5.10' in entries[0]
+    # Verify alphabetical ordering.
+    assert all([id in text for id, text in zip(resource_ids, entries[1:])])
+
+    assert not execute_in_page('returnval(ets()[0].old_ver);').is_displayed()
+    execute_in_page('returnval(ets()[0].details_but);').click()
+    assert root_mapping_id in containers['mapping_preview_container'].text
+    assert_container_displayed('mapping_preview_container')
+
+    execute_in_page('returnval(install_view.mapping_back_but);').click()
+    assert_container_displayed('install_preview')
+
+    execute_in_page('returnval(install_view.install_but);').click()
+    installed = lambda d: 'ly installed!' in containers['dialog_container'].text
+    WebDriverWait(driver, 10000).until(installed)
+
+    assert execute_in_page('returnval(shw(2));') == [['show'], True]
+    execute_in_page('returnval(install_view.dialog_ctx.ok_but);').click()
+    assert execute_in_page('returnval(shw(2));') == [['show', 'hide'], False]
+
+    # Verify the install
+    db_contents = get_db_contents(execute_in_page)
+    for item_type, ids in \
+        [('mapping', {root_mapping_id}), ('resource', set(resource_ids))]:
+        assert set([it['identifier'] for it in db_contents[item_type]]) == ids
+
+    assert all([len(db_contents[store]) == files_count
+                for store in ('files', 'file_uses')])
+
+    # Update the installed mapping to a newer version.
+    execute_in_page('returnval(install_view.show(...arguments));',
+                    'https://hydril.la/', 'mapping', root_mapping_id)
+    assert execute_in_page('returnval(shw(4));') == [['show'], True]
+    # resources are already in the newest versions, hence they should not appear
+    # in the install preview list.
+    assert execute_in_page('returnval(ets().length);') == 1
+    # Mapping's version update information should be displayed.
+    assert execute_in_page('returnval(ets()[0].old_ver);').is_displayed()
+    execute_in_page('returnval(install_view.install_but);').click()
+
+    WebDriverWait(driver, 10).until(installed)
+
+    assert execute_in_page('returnval(shw(4));') == [['show'], True]
+    execute_in_page('returnval(install_view.dialog_ctx.ok_but);').click()
+    assert execute_in_page('returnval(shw(4));') == [['show', 'hide'], False]
+
+    # Verify the newer version install.
+    old_db_contents, db_contents = db_contents, get_db_contents(execute_in_page)
+    old_db_contents['mapping'][0]['version'][-1] += 1
+    assert db_contents['mapping'] == old_db_contents['mapping']
+
+    # All items are up to date - verify dialog is instead shown in this case.
+    execute_in_page('install_view.show(...arguments);',
+                    'https://hydril.la/', 'mapping', root_mapping_id)
+    assert execute_in_page('returnval(shw(6));') == [['show'], True]
+    assert_container_displayed('dialog_container')
+    assert 'Nothing to do - packages already installed.' \
+        in containers['dialog_container'].text
+    execute_in_page('returnval(install_view.dialog_ctx.ok_but);').click()
+    assert execute_in_page('returnval(shw(6));') == [['show', 'hide'], False]
+
+@pytest.mark.ext_data(install_ext_data)
+@pytest.mark.usefixtures('webextension')
+@pytest.mark.parametrize('message', [
+    'fetching_data',
+    'failure_to_communicate_sendmessage',
+    'HTTP_code_item',
+    'invalid_JSON',
+    'newer_API_version',
+    'invalid_API_version',
+    'indexeddb_error_item',
+    'installing',
+    'indexeddb_error_file_uses',
+    'failure_to_communicate_fetch',
+    'HTTP_code_file',
+    'not_valid_text',
+    'sha256_mismatch',
+    'indexeddb_error_write'
+])
+def test_install_dialogs(driver, execute_in_page, message):
+    """
+    Test of various error and loading messages used in install view.
+    """
+    containers, assert_container_displayed = setup_view(driver, execute_in_page)
+
+    def dlg_buts():
+        return execute_in_page(
+            '''{
+            const dlg = install_view.dialog_ctx;
+            const ids = ['ask_buts', 'conf_buts'];
+            returnval(ids.filter(id => !dlg[id].classList.contains("hide")));
+            }''')
+
+    def dialog_txt():
+        return execute_in_page(
+            'returnval(install_view.dialog_ctx.msg.textContent);'
+        )
+
+    def assert_dlg(awaited_buttons, expected_msg, hides_install_view=True,
+                   button_to_click='ok_but'):
+        WebDriverWait(driver, 10).until(lambda d: dlg_buts() == awaited_buttons)
+
+        assert expected_msg == dialog_txt()
+
+        execute_in_page(
+            f'returnval(install_view.dialog_ctx.{button_to_click});'
+        ).click()
+
+        if hides_install_view:
+            assert execute_in_page('returnval(shw());') == \
+                [['show', 'hide'], False]
+
+    if message == 'fetching_data':
+        execute_in_page(
+            '''
+            browser.tabs.sendMessage = () => new Promise(cb => {});
+            install_view.show(...arguments);
+            ''',
+            'https://hydril.la/', 'mapping', 'mapping_a')
+
+        assert dlg_buts() == []
+        assert dialog_txt() == 'Fetching data from repository...'
+    elif message == 'failure_to_communicate_sendmessage':
+        execute_in_page(
+            '''
+            browser.tabs.sendMessage = () => Promise.resolve({error: "sth"});
+            install_view.show(...arguments);
+            ''',
+            'https://hydril.la/', 'mapping', 'mapping_a')
+
+        assert_dlg(['conf_buts'], 'Failure to communicate with repository :(')
+    elif message == 'HTTP_code_item':
+        execute_in_page(
+            '''
+            const response = {ok: false, status: 404};
+            browser.tabs.sendMessage = () => Promise.resolve(response);
+            install_view.show(...arguments);
+            ''',
+            'https://hydril.la/', 'mapping', 'mapping_a')
+
+        assert_dlg(['conf_buts'], 'Repository sent HTTP code 404 :(')
+    elif message == 'invalid_JSON':
+        execute_in_page(
+            '''
+            const response = {ok: true, status: 200, error_json: "sth"};
+            browser.tabs.sendMessage = () => Promise.resolve(response);
+            install_view.show(...arguments);
+            ''',
+            'https://hydril.la/', 'mapping', 'mapping_a')
+
+        assert_dlg(['conf_buts'], "Repository's response is not valid JSON :(")
+    elif message == 'newer_API_version':
+        execute_in_page(
+            '''
+            const response = {
+                ok: true,
+                status: 200,
+                json: {api_schema_version: [99, 99]}
+            };
+            browser.tabs.sendMessage = () => Promise.resolve(response);
+            install_view.show(...arguments);
+            ''',
+            'https://hydril.la/', 'mapping', 'somemapping', [2, 1])
+
+        assert_dlg(['conf_buts'],
+                   'Mapping somemapping-2.1 was served using unsupported Hydrilla API version (99.99). You might need to update Haketilo.')
+    elif message == 'invalid_API_version':
+        execute_in_page(
+            '''
+            const response = {
+                ok: true,
+                status: 200,
+                /* API version here is not an array as it should be. */
+                json: {api_schema_version: 123}
+            };
+            browser.tabs.sendMessage = () => Promise.resolve(response);
+            install_view.show(...arguments);
+            ''',
+            'https://hydril.la/', 'resource', 'someresource')
+
+        assert_dlg(['conf_buts'],
+                   'Resource someresource was served using unsupported Hydrilla API version. You might need to update Haketilo.')
+    elif message == 'indexeddb_error_item':
+        execute_in_page(
+            '''
+            haketilodb.idb_get = () => {throw "some error";};
+            install_view.show(...arguments);
+            ''',
+            'https://hydril.la/', 'mapping', 'mapping_a')
+
+        assert_dlg(['conf_buts'],
+                   "Error accessing Haketilo's internal database :(")
+    elif message == 'installing':
+        execute_in_page(
+            '''
+            haketilodb.save_items = () => new Promise(() => {});
+            returnval(install_view.show(...arguments));
+            ''',
+            'https://hydril.la/', 'mapping', 'mapping_b')
+
+        execute_in_page('returnval(install_view.install_but);').click()
+
+        assert dlg_buts() == []
+        assert dialog_txt() == 'Installing...'
+    elif message == 'indexeddb_error_file_uses':
+        execute_in_page(
+            '''
+            const old_idb_get = haketilodb.idb_get;
+            haketilodb.idb_get = function(transaction, store_name, identifier) {
+                if (store_name === "file_uses")
+                    throw "some error";
+                return old_idb_get(...arguments);
+            }
+            returnval(install_view.show(...arguments));
+            ''',
+            'https://hydril.la/', 'mapping', 'mapping_b')
+
+        execute_in_page('returnval(install_view.install_but);').click()
+
+        assert_dlg(['conf_buts'],
+                   "Error accessing Haketilo's internal database :(")
+    elif message == 'failure_to_communicate_fetch':
+        execute_in_page(
+            '''
+            fetch = () => {throw "some error";};
+            returnval(install_view.show(...arguments));
+            ''',
+            'https://hydril.la/', 'mapping', 'mapping_b')
+
+        execute_in_page('returnval(install_view.install_but);').click()
+
+        assert_dlg(['conf_buts'],
+                   'Failure to communicate with repository :(')
+    elif message == 'HTTP_code_file':
+        execute_in_page(
+            '''
+            fetch = () => Promise.resolve({ok: false, status: 400});
+            returnval(install_view.show(...arguments));
+            ''',
+            'https://hydril.la/', 'mapping', 'mapping_b')
+
+        execute_in_page('returnval(install_view.install_but);').click()
+
+        assert_dlg(['conf_buts'], 'Repository sent HTTP code 400 :(')
+    elif message == 'not_valid_text':
+        execute_in_page(
+            '''
+            const err = () => {throw "some error";};
+            fetch = () => Promise.resolve({ok: true, status: 200, text: err});
+            returnval(install_view.show(...arguments));
+            ''',
+            'https://hydril.la/', 'mapping', 'mapping_b')
+
+        execute_in_page('returnval(install_view.install_but);').click()
+
+        assert_dlg(['conf_buts'], "Repository's response is not valid text :(")
+    elif message == 'sha256_mismatch':
+        execute_in_page(
+            '''
+            let old_fetch = fetch, url_used;
+            fetch = async function(url) {
+                url_used = url;
+                const response = await old_fetch(...arguments);
+                const text = () => response.text().then(t => t + ":d");
+                return {ok: response.ok, status: response.status, text};
+            }
+            returnval(install_view.show(...arguments));
+            ''',
+            'https://hydril.la/', 'mapping', 'mapping_b')
+
+        execute_in_page('returnval(install_view.install_but);').click()
+
+        get_url_used = lambda d: execute_in_page('returnval(url_used);')
+        url_used = WebDriverWait(driver, 10).until(get_url_used)
+        print ((url_used,))
+
+        assert dlg_buts() == ['conf_buts']
+        assert dialog_txt() == \
+            f'{url_used} served a file with different SHA256 cryptographic sum :('
+    elif message == 'indexeddb_error_write':
+        execute_in_page(
+            '''
+            haketilodb.save_items = () => {throw "some error";};
+            returnval(install_view.show(...arguments));
+            ''',
+            'https://hydril.la/', 'mapping', 'mapping_b')
+
+        execute_in_page('returnval(install_view.install_but);').click()
+
+        assert_dlg(['conf_buts'],
+                   "Error writing to Haketilo's internal database :(")
+    else:
+        raise Exception('made a typo in test function params?')
diff --git a/test/unit/test_patterns_query_manager.py b/test/unit/test_patterns_query_manager.py
index 35047f5..4e6d1bf 100644
--- a/test/unit/test_patterns_query_manager.py
+++ b/test/unit/test_patterns_query_manager.py
@@ -89,7 +89,7 @@ def test_pqm_tree_building(driver, execute_in_page):
         const [initial_mappings, initial_blocking] = arguments.slice(0, 2);
         let mappingchange, blockingchange;
 
-        haketilodb.track.mappings = function (cb) {
+        haketilodb.track.mapping = function (cb) {
             mappingchange = cb;
 
             return [{}, initial_mappings];
@@ -253,7 +253,7 @@ def test_pqm_script_injection(driver, execute_in_page):
         const identifiers = arguments[0];
         async function remove_items()
         {
-            const ctx = await start_items_transaction(["mappings"], {});
+            const ctx = await start_items_transaction(["mapping"], {});
             for (const id of identifiers)
                 await remove_mapping(id, ctx);
             await finalize_transaction(ctx);
diff --git a/test/unit/test_payload_create.py b/test/unit/test_payload_create.py
index 6a6cf2c..cee3a9b 100644
--- a/test/unit/test_payload_create.py
+++ b/test/unit/test_payload_create.py
@@ -118,19 +118,19 @@ def test_payload_create_normal_usage(driver, execute_in_page):
     def assert_db_contents():
         db_contents = get_db_contents(execute_in_page)
 
-        assert uuidv4_re.match(db_contents['resources'][0]['uuid'])
+        assert uuidv4_re.match(db_contents['resource'][0]['uuid'])
 
         localid = f'local-{form_data["identifier"]}'
         long_name = form_data['long_name'] or form_data['identifier']
         payloads = dict([(pat, {'identifier': localid})
                          for pat in form_data['patterns'].split('\n') if pat])
 
-        assert db_contents['resources'] == [{
+        assert db_contents['resource'] == [{
       	    'source_name':      localid,
 	    'source_copyright': [],
 	    'type':             'resource',
 	    'identifier':       localid,
-	    'uuid':             db_contents['resources'][0]['uuid'],
+	    'uuid':             db_contents['resource'][0]['uuid'],
 	    'version':          [1],
 	    'description':      form_data['description'],
 	    'dependencies':     [],
@@ -141,13 +141,13 @@ def test_payload_create_normal_usage(driver, execute_in_page):
             }]
         }]
 
-        assert uuidv4_re.match(db_contents['mappings'][0]['uuid'])
-        assert db_contents['mappings'] == [{
+        assert uuidv4_re.match(db_contents['mapping'][0]['uuid'])
+        assert db_contents['mapping'] == [{
       	    'source_name':      localid,
 	    'source_copyright': [],
 	    'type':             'mapping',
 	    'identifier':       localid,
-	    'uuid':             db_contents['mappings'][0]['uuid'],
+	    'uuid':             db_contents['mapping'][0]['uuid'],
 	    'version':          [1],
             'description':      form_data['description'],
             'long_name':        long_name,
diff --git a/test/unit/test_repo_query_cacher.py b/test/unit/test_repo_query_cacher.py
index d5c7396..ee9f0fd 100644
--- a/test/unit/test_repo_query_cacher.py
+++ b/test/unit/test_repo_query_cacher.py
@@ -22,40 +22,15 @@ import json
 from selenium.webdriver.support.ui import WebDriverWait
 
 from ..script_loader import load_script
-
-tab_id_responder = '''
-function tell_tab_id(msg, sender, respond_cb) {
-    if (msg[0] === "learn_tab_id")
-        respond_cb(sender.tab.id);
-}
-browser.runtime.onMessage.addListener(tell_tab_id);
-'''
+from .utils import *
 
 def content_script():
-    return load_script('content/repo_query_cacher.js') + ''';
-    start();
-    browser.runtime.sendMessage(["learn_tab_id"])
-        .then(tid => window.wrappedJSObject.haketilo_tab = tid);
-    '''
+    script = load_script('content/repo_query_cacher.js')
+    return f'{script}; {tab_id_asker}; start();'
 
 def bypass_js():
     return load_script('background/CORS_bypass_server.js') + '; start();'
 
-def run_content_script_in_new_window(driver, url):
-    initial_handle = driver.current_window_handle
-    handles = driver.window_handles
-    driver.execute_script('window.open(arguments[0], "_blank");', url)
-    WebDriverWait(driver, 10).until(lambda d: d.window_handles is not handles)
-    new_handle = [h for h in driver.window_handles if h not in handles][0]
-
-    driver.switch_to.window(new_handle)
-
-    get_tab_id = lambda d: d.execute_script('return window.haketilo_tab;')
-    tab_id = WebDriverWait(driver, 10).until(get_tab_id)
-
-    driver.switch_to.window(initial_handle)
-    return tab_id
-
 def fetch_through_cache(driver, tab_id, url):
     return driver.execute_script(
         '''
@@ -90,7 +65,7 @@ def test_repo_query_cacher_normal_use(driver, execute_in_page):
 
     for i in range(2):
         result = fetch_through_cache(driver, tab_id, 'https://nxdoma.in/')
-        assert set(result.keys()) == {'ok', 'status', 'error-json'}
+        assert set(result.keys()) == {'ok', 'status', 'error_json'}
         assert result['ok'] == False
         assert result['status'] == 404
 
diff --git a/test/unit/utils.py b/test/unit/utils.py
index 4d8766e..90a2ab7 100644
--- a/test/unit/utils.py
+++ b/test/unit/utils.py
@@ -26,6 +26,7 @@ Various functions and objects that can be reused between unit tests
 # proprietary program, I am not going to enforce this in court.
 
 from hashlib import sha256
+from selenium.webdriver.support.ui import WebDriverWait
 
 from ..script_loader import load_script
 
@@ -200,3 +201,44 @@ def are_scripts_allowed(driver, nonce=None):
             return document.haketilo_scripts_allowed;
             ''',
             nonce)
+
+"""
+tab_id_responder is meant to be appended to background script of a test
+extension.
+"""
+tab_id_responder = '''
+function tell_tab_id(msg, sender, respond_cb) {
+    if (msg[0] === "learn_tab_id")
+        respond_cb(sender.tab.id);
+}
+browser.runtime.onMessage.addListener(tell_tab_id);
+'''
+
+"""
+tab_id_asker is meant to be appended to content script of a test extension.
+"""
+tab_id_asker = '''
+browser.runtime.sendMessage(["learn_tab_id"])
+    .then(tid => window.wrappedJSObject.haketilo_tab = tid);
+'''
+
+def run_content_script_in_new_window(driver, url):
+    """
+    Expect an extension to be loaded which had tab_id_responder and tab_id_asker
+    appended to its background and content scripts, respectively.
+    Open the provided url in a new tab, find its tab id and return it, with
+    current window changed back to the initial one.
+    """
+    initial_handle = driver.current_window_handle
+    handles = driver.window_handles
+    driver.execute_script('window.open(arguments[0], "_blank");', url)
+    WebDriverWait(driver, 10).until(lambda d: d.window_handles is not handles)
+    new_handle = [h for h in driver.window_handles if h not in handles][0]
+
+    driver.switch_to.window(new_handle)
+
+    get_tab_id = lambda d: d.execute_script('return window.haketilo_tab;')
+    tab_id = WebDriverWait(driver, 10).until(get_tab_id)
+
+    driver.switch_to.window(initial_handle)
+    return tab_id
diff --git a/test/world_wide_library.py b/test/world_wide_library.py
index 14e3d2f..31864fb 100644
--- a/test/world_wide_library.py
+++ b/test/world_wide_library.py
@@ -31,9 +31,14 @@ from hashlib import sha256
 from pathlib import Path
 from shutil import rmtree
 from threading import Lock
+from uuid import uuid4
 import json
 
 from .misc_constants import here
+from .unit.utils import * # sample repo data
+
+# TODO: instead of having the entire catalog defined here, make it possible to
+# add catalog items from within individual test files.
 
 served_scripts = {}
 served_scripts_lock = Lock()
@@ -100,6 +105,86 @@ def serve_counter(command, get_params, post_params):
         json.dumps({'counter': request_counter})
     )
 
+# Mock a Hydrilla repository.
+
+# Mock files in the repository.
+sample_contents = [f'Mi povas manĝi vitron, ĝi ne damaĝas min {i}'
+                   for i in range(9)]
+sample_hashes   = [sha256(c.encode()).digest().hex() for c in sample_contents]
+
+file_url     = lambda hashed:   f'https://hydril.la/file/sha256-{hashed}'
+file_handler = lambda contents: lambda c, g, p: (200, {}, contents)
+
+sample_files_catalog = dict([(file_url(h), file_handler(c))
+                             for h, c in zip(sample_hashes, sample_contents)])
+
+# Mock resources and mappings in the repository.
+sample_resource_templates = []
+
+for deps in [(0, 1, 2, 3), (3, 4, 5, 6), (6, 7, 8, 9)]:
+    letters = [chr(ord('a') + i) for i in deps]
+    sample_resource_templates.append({
+        'id_suffix':    ''.join(letters),
+        'files_count':  deps[0],
+        'dependencies': [f'resource_{l}' for l in letters]
+    })
+
+suffixes = [srt['id_suffix'] for srt in sample_resource_templates]
+sample_resource_templates.append({
+    'id_suffix':    '-'.join(suffixes),
+    'files_count':  2,
+    'dependencies': [f'resource_{suffix}' for suffix in suffixes]
+})
+
+for i in range(10):
+    sample_resource_templates.append({
+        'id_suffix':    chr(ord('a') + i),
+        'files_count':  i,
+        'dependencies': []
+    })
+
+sample_resources_catalog = {}
+sample_mappings_catalog = {}
+
+for srt in sample_resource_templates:
+    resource = make_sample_resource()
+    resource['api_schema_version']  = [1]
+    resource['api_schema_revision'] = 1
+    resource['identifier']          = f'resource_{srt["id_suffix"]}'
+    resource['long_name']           = resource['identifier'].upper()
+    resource['uuid']                = str(uuid4())
+    resource['dependencies']        = srt['dependencies']
+    resource['source_copyright']    = []
+    resource['scripts']             = []
+    for i in range(srt['files_count']):
+        file_ref = {'file': f'file_{i}', 'sha256': sample_hashes[i]}
+        resource[('source_copyright', 'scripts')[i & 1]].append(file_ref)
+
+    # Keeping it simple - just make one corresponding mapping for each resource.
+    payloads = {'https://example.com/*': {'identifier': resource['identifier']}}
+
+    mapping = make_sample_mapping()
+    mapping['api_schema_version']  = [1]
+    mapping['api_schema_revision'] = 1
+    mapping['identifier']          = f'mapping_{srt["id_suffix"]}'
+    mapping['long_name']           = mapping['identifier'].upper()
+    mapping['uuid']                = str(uuid4())
+    mapping['source_copyright']    = resource['source_copyright']
+    mapping['payloads']            = payloads
+
+    make_handler = lambda txt: lambda c, g, p: (200, {}, txt)
+
+    for item, catalog in [
+        (resource, sample_resources_catalog),
+        (mapping,  sample_mappings_catalog)
+    ]:
+        fmt = f'https://hydril.la/{item["type"]}/{item["identifier"]}%s.json'
+        # Make 2 versions of each item so that we can test updates.
+        for i in range(2):
+            for fmt_arg in ('', '/' + item_version_string(item)):
+                catalog[fmt % fmt_arg] = make_handler(json.dumps(item))
+            item['version'][-1] += 1
+
 catalog = {
     'http://gotmyowndoma.in':
     (302, {'location': 'http://gotmyowndoma.in/index.html'}, None),
@@ -144,5 +229,9 @@ catalog = {
     'https://site.with.paylo.ad/':
     (302, {'location': 'https://site.with.paylo.ad/index.html'}, None),
     'https://site.with.paylo.ad/index.html':
-    (200, {}, here / 'data' / 'pages' / 'gotmyowndomain_https.html')
+    (200, {}, here / 'data' / 'pages' / 'gotmyowndomain_https.html'),
+
+    **sample_files_catalog,
+    **sample_resources_catalog,
+    **sample_mappings_catalog
 }