FindPython: customize failure message

3 files changed, 98 insertions, 0 deletions

diff --git a/Tests/FindPython/CMakeLists.txt b/Tests/FindPython/CMakeLists.txt
index 868cfe0e13..10c98c5360 100644
--- a/Tests/FindPython/CMakeLists.txt
+++ b/Tests/FindPython/CMakeLists.txt
@@ -134,6 +134,20 @@ if(CMake_TEST_FindPython)
     --test-command ${CMAKE_CTEST_COMMAND} -V -C $<CONFIGURATION>
     )
 
+  add_test(NAME FindPython.CustomFailureMessage COMMAND
+    ${CMAKE_CTEST_COMMAND} -C $<CONFIGURATION>
+    --build-and-test
+    "${CMake_SOURCE_DIR}/Tests/FindPython/CustomFailureMessage"
+    "${CMake_BINARY_DIR}/Tests/FindPython/CustomFailureMessage"
+    ${build_generator_args}
+    --build-project TestCustomFailureMessage
+    --build-options ${build_options} "-Dbuild_generator_args=${build_generator_args}"
+    "-DCMake_SOURCE_DIR=${CMake_SOURCE_DIR}"
+    "-DCMake_BINARY_DIR=${CMake_BINARY_DIR}"
+    "-DCMake_TEST_FindPython_NumPy=${CMake_TEST_FindPython_NumPy}"
+    --test-command ${CMAKE_CTEST_COMMAND} -V -C $<CONFIGURATION>
+    )
+
 endif()
 
 if(CMake_TEST_FindPython_NumPy)
diff --git a/Tests/FindPython/CustomFailureMessage/CMakeLists.txt b/Tests/FindPython/CustomFailureMessage/CMakeLists.txt
new file mode 100644
index 0000000000..a0d8eb2f44
--- /dev/null
+++ b/Tests/FindPython/CustomFailureMessage/CMakeLists.txt
@@ -0,0 +1,79 @@
+cmake_minimum_required(VERSION 3.1)
+
+project(TestCustomFailureMessage LANGUAGES NONE)
+
+include(CTest)
+
+add_test(NAME FindPython.CustomFailureMessage.Interpreter COMMAND
+  ${CMAKE_CTEST_COMMAND} -C $<CONFIGURATION>
+  --build-and-test
+  "${CMake_SOURCE_DIR}/Tests/FindPython/CustomFailureMessage/Check"
+  "${CMake_BINARY_DIR}/Tests/FindPython/CustomFailureMessage/Interpreter"
+  ${build_generator_args}
+  --build-project TestCustomFailureMessage.Check
+  --build-options "-DCHECK_COMPONENTS=Interpreter"
+                  "-DPython3_EXECUTABLE=/not/found/interpreter"
+  --test-command ${CMAKE_CTEST_COMMAND} -V -C $<CONFIGURATION>
+  )
+set_tests_properties(FindPython.CustomFailureMessage.Interpreter PROPERTIES
+  PASS_REGULAR_EXPRESSION "Reason given by package:.+Interpreter: Cannot run the interpreter")
+
+add_test(NAME FindPython.CustomFailureMessage.Library COMMAND
+  ${CMAKE_CTEST_COMMAND} -C $<CONFIGURATION>
+  --build-and-test
+  "${CMake_SOURCE_DIR}/Tests/FindPython/CustomFailureMessage/Check"
+  "${CMake_BINARY_DIR}/Tests/FindPython/CustomFailureMessage/Library"
+  ${build_generator_args}
+  --build-project TestCustomFailureMessage.Check
+  --build-options "-DCHECK_COMPONENTS=Development"
+                  "-DPython3_LIBRARY=/not/found/library"
+  --test-command ${CMAKE_CTEST_COMMAND} -V -C $<CONFIGURATION>
+  )
+set_tests_properties(FindPython.CustomFailureMessage.Library PROPERTIES
+  PASS_REGULAR_EXPRESSION "Reason given by package:.+Development: Cannot find the library")
+
+add_test(NAME FindPython.CustomFailureMessage.Include COMMAND
+  ${CMAKE_CTEST_COMMAND} -C $<CONFIGURATION>
+  --build-and-test
+  "${CMake_SOURCE_DIR}/Tests/FindPython/CustomFailureMessage/Check"
+  "${CMake_BINARY_DIR}/Tests/FindPython/CustomFailureMessage/Include"
+  ${build_generator_args}
+  --build-project TestCustomFailureMessage.Check
+  --build-options "-DCHECK_COMPONENTS=Development"
+                  "-DPython3_INCLUDE_DIR=/not/found/include"
+  --test-command ${CMAKE_CTEST_COMMAND} -V -C $<CONFIGURATION>
+  )
+set_tests_properties(FindPython.CustomFailureMessage.Include PROPERTIES
+  PASS_REGULAR_EXPRESSION "Reason given by package:.+Development: Cannot find the directory")
+
+add_test(NAME FindPython.CustomFailureMessage.Multiple COMMAND
+  ${CMAKE_CTEST_COMMAND} -C $<CONFIGURATION>
+  --build-and-test
+  "${CMake_SOURCE_DIR}/Tests/FindPython/CustomFailureMessage/Check"
+  "${CMake_BINARY_DIR}/Tests/FindPython/CustomFailureMessage/Multiple"
+  ${build_generator_args}
+  --build-project TestCustomFailureMessage.Check
+  --build-options "-DCHECK_COMPONENTS=Interpreter;Development"
+                  "-DPython3_EXECUTABLE=/not/found/interpreter"
+                  "-DPython3_LIBRARY=/not/found/library"
+  --test-command ${CMAKE_CTEST_COMMAND} -V -C $<CONFIGURATION>
+  )
+set_tests_properties(FindPython.CustomFailureMessage.Multiple PROPERTIES
+  PASS_REGULAR_EXPRESSION "Reason given by package:.+Interpreter: Cannot run the interpreter.+Development: Cannot find the library")
+
+
+if (CMake_TEST_FindPython_NumPy)
+  add_test(NAME FindPython.CustomFailureMessage.NumPy COMMAND
+    ${CMAKE_CTEST_COMMAND} -C $<CONFIGURATION>
+    --build-and-test
+    "${CMake_SOURCE_DIR}/Tests/FindPython/CustomFailureMessage/Check"
+    "${CMake_BINARY_DIR}/Tests/FindPython/CustomFailureMessage/NumPy"
+    ${build_generator_args}
+    --build-project TestCustomFailureMessage.Check
+    --build-options "-DCHECK_COMPONENTS=Interpreter;Development;NumPy"
+                    "-DPython3_NumPy_INCLUDE_DIR=/not/found/numpy/include"
+    --test-command ${CMAKE_CTEST_COMMAND} -V -C $<CONFIGURATION>
+    )
+  set_tests_properties(FindPython.CustomFailureMessage.NumPy PROPERTIES
+    PASS_REGULAR_EXPRESSION "Reason given by package:.+NumPy: Cannot find the directory")
+endif()
diff --git a/Tests/FindPython/CustomFailureMessage/Check/CMakeLists.txt b/Tests/FindPython/CustomFailureMessage/Check/CMakeLists.txt
new file mode 100644
index 0000000000..fed963e476
--- /dev/null
+++ b/Tests/FindPython/CustomFailureMessage/Check/CMakeLists.txt
@@ -0,0 +1,5 @@
+cmake_minimum_required(VERSION 3.1)
+
+project(TestCustomFailureMessage.Check LANGUAGES C)
+
+find_package (Python3 REQUIRED COMPONENTS ${CHECK_COMPONENTS})