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from prompt_toolkit.eventloop import get_event_loop
from prompt_toolkit.history import FileHistory, InMemoryHistory, ThreadedHistory
def _call_history_load(history):
"""
Helper: Call the history "load" method and return the result as a list of strings.
"""
result = []
async def call_load():
async for item in history.load():
result.append(item)
get_event_loop().run_until_complete(call_load())
return result
def test_in_memory_history():
history = InMemoryHistory()
history.append_string("hello")
history.append_string("world")
# Newest should yield first.
assert _call_history_load(history) == ["world", "hello"]
# Test another call.
assert _call_history_load(history) == ["world", "hello"]
history.append_string("test3")
assert _call_history_load(history) == ["test3", "world", "hello"]
# Passing history as a parameter.
history2 = InMemoryHistory(["abc", "def"])
assert _call_history_load(history2) == ["def", "abc"]
def test_file_history(tmpdir):
histfile = tmpdir.join("history")
history = FileHistory(histfile)
history.append_string("hello")
history.append_string("world")
# Newest should yield first.
assert _call_history_load(history) == ["world", "hello"]
# Test another call.
assert _call_history_load(history) == ["world", "hello"]
history.append_string("test3")
assert _call_history_load(history) == ["test3", "world", "hello"]
# Create another history instance pointing to the same file.
history2 = FileHistory(histfile)
assert _call_history_load(history2) == ["test3", "world", "hello"]
def test_threaded_file_history(tmpdir):
histfile = tmpdir.join("history")
history = ThreadedHistory(FileHistory(histfile))
history.append_string("hello")
history.append_string("world")
# Newest should yield first.
assert _call_history_load(history) == ["world", "hello"]
# Test another call.
assert _call_history_load(history) == ["world", "hello"]
history.append_string("test3")
assert _call_history_load(history) == ["test3", "world", "hello"]
# Create another history instance pointing to the same file.
history2 = ThreadedHistory(FileHistory(histfile))
assert _call_history_load(history2) == ["test3", "world", "hello"]
def test_threaded_in_memory_history():
# Threaded in memory history is not useful. But testing it anyway, just to
# see whether everything plays nicely together.
history = ThreadedHistory(InMemoryHistory())
history.append_string("hello")
history.append_string("world")
# Newest should yield first.
assert _call_history_load(history) == ["world", "hello"]
# Test another call.
assert _call_history_load(history) == ["world", "hello"]
history.append_string("test3")
assert _call_history_load(history) == ["test3", "world", "hello"]
# Passing history as a parameter.
history2 = ThreadedHistory(InMemoryHistory(["abc", "def"]))
assert _call_history_load(history2) == ["def", "abc"]
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