if PR have no .py files, do not use 'python coverage run', to speedup unit test (#29739)

* reopen python coverage --include for test, test=develop

* if no .py file modified, not use coverage run, test=develop

* remove test code, test=develop

* add WITH_INCREMENTAL_COVERAGE, test=develop

* refine if else, test=develop

cmake/generic.cmake

@@ -843,14 +843,14 @@ function(py_test TARGET_NAME)
     set(multiValueArgs SRCS DEPS ARGS ENVS)
     cmake_parse_arguments(py_test "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
 
-    if(WITH_COVERAGE)
+    if(WITH_COVERAGE AND NOT (WITH_INCREMENTAL_COVERAGE AND "$ENV{PADDLE_GIT_DIFF_PY_FILE}" STREQUAL ""))
       add_test(NAME ${TARGET_NAME}
-        COMMAND ${CMAKE_COMMAND} -E env FLAGS_init_allocated_mem=true FLAGS_cudnn_deterministic=true
-        FLAGS_cpu_deterministic=true
-        PYTHONPATH=${PADDLE_BINARY_DIR}/python ${py_test_ENVS}
-        COVERAGE_FILE=${PADDLE_BINARY_DIR}/python-coverage.data
-        ${PYTHON_EXECUTABLE} -m coverage run --branch -p ${py_test_SRCS} ${py_test_ARGS}
-        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+              COMMAND ${CMAKE_COMMAND} -E env FLAGS_init_allocated_mem=true FLAGS_cudnn_deterministic=true
+              FLAGS_cpu_deterministic=true
+              PYTHONPATH=${PADDLE_BINARY_DIR}/python ${py_test_ENVS}
+              COVERAGE_FILE=${PADDLE_BINARY_DIR}/python-coverage.data
+              ${PYTHON_EXECUTABLE} -m coverage run --branch -p ${py_test_SRCS} ${py_test_ARGS}
+              WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
     else()
       add_test(NAME ${TARGET_NAME}
                COMMAND ${CMAKE_COMMAND} -E env FLAGS_init_allocated_mem=true FLAGS_cudnn_deterministic=true

python/paddle/fluid/tests/unittests/CMakeLists.txt

@@ -219,12 +219,12 @@ function(py_test_modules TARGET_NAME)
     set(multiValueArgs MODULES DEPS ENVS)
     cmake_parse_arguments(py_test_modules "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
 
-    if(WITH_COVERAGE)
+    if(WITH_COVERAGE AND NOT (WITH_INCREMENTAL_COVERAGE AND "$ENV{PADDLE_GIT_DIFF_PY_FILE}" STREQUAL ""))
         add_test(NAME ${TARGET_NAME}
-            COMMAND ${CMAKE_COMMAND} -E env PYTHONPATH=${PADDLE_BINARY_DIR}/python ${py_test_modules_ENVS}
-            COVERAGE_FILE=${PADDLE_BINARY_DIR}/python-coverage.data
-            ${PYTHON_EXECUTABLE} -m coverage run --branch -p ${PADDLE_SOURCE_DIR}/tools/test_runner.py ${py_test_modules_MODULES}
-            WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+                COMMAND ${CMAKE_COMMAND} -E env PYTHONPATH=${PADDLE_BINARY_DIR}/python ${py_test_modules_ENVS}
+                COVERAGE_FILE=${PADDLE_BINARY_DIR}/python-coverage.data
+                ${PYTHON_EXECUTABLE} -m coverage run --branch -p ${PADDLE_SOURCE_DIR}/tools/test_runner.py ${py_test_modules_MODULES}
+                WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
     else()
         add_test(NAME ${TARGET_NAME}
                 COMMAND ${CMAKE_COMMAND} -E env PYTHONPATH=${PADDLE_BINARY_DIR}/python ${py_test_modules_ENVS}