1 files changed, 88 insertions, 0 deletions
diff --git a/test/test_completion_refresher.py b/test/test_completion_refresher.py
new file mode 100644
index 0000000..cdc2fb5
--- /dev/null
+++ b/test/test_completion_refresher.py
@@ -0,0 +1,88 @@
+import time
+import pytest
+from unittest.mock import Mock, patch
+
+
+@pytest.fixture
+def refresher():
+    from mycli.completion_refresher import CompletionRefresher
+    return CompletionRefresher()
+
+
+def test_ctor(refresher):
+    """Refresher object should contain a few handlers.
+
+    :param refresher:
+    :return:
+
+    """
+    assert len(refresher.refreshers) > 0
+    actual_handlers = list(refresher.refreshers.keys())
+    expected_handlers = ['databases', 'schemata', 'tables', 'users', 'functions',
+                         'special_commands', 'show_commands']
+    assert expected_handlers == actual_handlers
+
+
+def test_refresh_called_once(refresher):
+    """
+
+    :param refresher:
+    :return:
+    """
+    callbacks = Mock()
+    sqlexecute = Mock()
+
+    with patch.object(refresher, '_bg_refresh') as bg_refresh:
+        actual = refresher.refresh(sqlexecute, callbacks)
+        time.sleep(1)  # Wait for the thread to work.
+        assert len(actual) == 1
+        assert len(actual[0]) == 4
+        assert actual[0][3] == 'Auto-completion refresh started in the background.'
+        bg_refresh.assert_called_with(sqlexecute, callbacks, {})
+
+
+def test_refresh_called_twice(refresher):
+    """If refresh is called a second time, it should be restarted.
+
+    :param refresher:
+    :return:
+
+    """
+    callbacks = Mock()
+
+    sqlexecute = Mock()
+
+    def dummy_bg_refresh(*args):
+        time.sleep(3)  # seconds
+
+    refresher._bg_refresh = dummy_bg_refresh
+
+    actual1 = refresher.refresh(sqlexecute, callbacks)
+    time.sleep(1)  # Wait for the thread to work.
+    assert len(actual1) == 1
+    assert len(actual1[0]) == 4
+    assert actual1[0][3] == 'Auto-completion refresh started in the background.'
+
+    actual2 = refresher.refresh(sqlexecute, callbacks)
+    time.sleep(1)  # Wait for the thread to work.
+    assert len(actual2) == 1
+    assert len(actual2[0]) == 4
+    assert actual2[0][3] == 'Auto-completion refresh restarted.'
+
+
+def test_refresh_with_callbacks(refresher):
+    """Callbacks must be called.
+
+    :param refresher:
+
+    """
+    callbacks = [Mock()]
+    sqlexecute_class = Mock()
+    sqlexecute = Mock()
+
+    with patch('mycli.completion_refresher.SQLExecute', sqlexecute_class):
+        # Set refreshers to 0: we're not testing refresh logic here
+        refresher.refreshers = {}
+        refresher.refresh(sqlexecute, callbacks)
+        time.sleep(1)  # Wait for the thread to work.
+        assert (callbacks[0].call_count == 1)