Created by: Avin0323

PR types

Others

PR changes

Others

Describe

Since the data download cmake-function did not support Windows system previously, unittests of inference APIs are disabled on Windows. This problem has been fixed in PR26512 which will set WITH_INFERENCE_API_TEST=ON to add unittests of inference APIs on Windows.

And fix five unittest problems:

1. In file paddle/fluid/inference/tests/api/analyzer_image_classification_tester.cc: To create directory should use _mkdir instead of mkdir on windows.
2. In file paddle/fluid/inference/tests/api/analyzer_ner_tester.cc: std::min should specify an explicit type, otherwise the compiler can't get correct type.
3. In file paddle/fluid/inference/tests/api/CMakeLists.txt: MobileNet_qat_perf.tar.gz does not download before run test_analyzer_quant_performance_benchmark on Windows, but it download successful on Linux. The reason is that data only download on Linux according to file python/paddle/fluid/contrib/slim/tests/CMakeLists.txt.
4. In file paddle/fluid/inference/tests/api/full_pascalvoc_test_preprocess.py and paddle/fluid/inference/tests/api/full_ILSVRC2012_val_preprocess.py: The import location of the StringIO is inconsistent between py2 and py3. 5.In file paddle/fluid/inference/tests/api/analyzer_capi_tester.cc: Float array input points to an invalid address, and it can run successful via new/delete. The real reason needs more debugging.