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AppTest coverage for a KwargsInput source of a MultiSourceInput (and _file_uploaders recursion into it) #32
Description
i2mint/front#45 (fixed by i2mint/front#49) made a KwargsInput usable as one of the sources of a MultiSourceInput: the section now feeds its input specs to that nested kwargs input. front has a unit test with minimal concrete elements, but streamlitfront has no AppTest for this shape, and the recursion of _file_uploaders into a kwargs input's _exec_section (when that kwargs input sits inside a multi-source input) is still untested.
Starter (verified to pass against front master once #49 is merged):
from streamlit.testing.v1 import AppTest
APP = '''
from i2 import Sig
from front import APP_KEY, RENDERING_KEY, ELEMENT_KEY
from streamlitfront import mk_app
from streamlitfront.elements import FileUploader, MultiSourceInput, TextOutput, KwargsInput
def g(a: int = 1, b: str = "x"): ...
def f(data): return repr(data)
mk_app([f], config={
APP_KEY: {"title": "t"},
RENDERING_KEY: {"f": {"execution": {
"inputs": {"data": {
ELEMENT_KEY: MultiSourceInput,
"From files": {ELEMENT_KEY: FileUploader},
"From params": {ELEMENT_KEY: KwargsInput, "func_sig": Sig(g)},
}},
"output": {ELEMENT_KEY: TextOutput},
}}},
})()
'''
def test_kwargs_source_of_multi_source_input():
at = AppTest.from_string(APP, default_timeout=30).run()
at.selectbox[0].select("From params").run()
at.number_input[0].set_value(5).run()
at.text_input[0].set_value("hi").run()
at.button[0].click().run()
assert not at.exception
assert "{'a': 5, 'b': 'hi'}" in [m.value for m in at.markdown]Add it to tests/ (reusing the _isolate_default_convention fixture of tests/test_file_uploader_clear.py), plus a variant where the kwargs source has a parameter rendered as a FileUploader, to cover _file_uploaders clearing it after submit.
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Activity
Test a KwargsInput source of a MultiSourceInput, and uploader clearin…