[ENH] test for get_test_params, and reserved parameters#4279
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fkiraly
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Aug 12, 2023
In order to test parameter settings for estimators properly, each important parameter should have been set to a non-default. This PR introduces a test which checks that there are at least two test parameter sets (if the estimator has at least one parameter), and correctness of these sets. Requires: * #4279 for the general test for `get_test_params` (no specific number assumed) * #2835 as it uses the parameter name interface * #3428 to pass the `no-softdeps` step. Current estimators are not tested due to differential testing. If diff testing is turned off, helps tracking down the estimators that do not yet have two parameter sets, see #3429.
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This PR introduces:
get_test_paramsmethod ofBaseObjectdescendants. It tests whether the return has the expected type.multioutputandmultilevelparameters, which change the logical type of the metric. This is implemented as a tagreserved_params.reserved_paramstag in the base metric classes