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Implement #624: Use shorter hashes with CPM_SOURCE_CACHE (#631)

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* Add ASSERT_CONTENTS_EQUAL test macro in testing.cmake

Checks if the contents of a file matches the given input

* Use shorter hashes with CPM_SOURCE_CACHE (#624)

Uses shorter hashes with CPM_SOURCE_CACHE. Falls back to a longer hash
if necessary (ie, if there's a collision with an existing hash).

See: https://github.com/cpm-cmake/CPM.cmake/issues/624

* Update integration tests to support shorter hashes

* trigger ci

* run cmake-format

* if already available, use the legacy cache hash

* create temporary file in current binary dir

* add test case for legacy hash

---------

Co-authored-by: Lars Melchior <lars.melchior@gmail.com>
Co-authored-by: Lars Melchior <TheLartians@users.noreply.github.com>
This commit is contained in:
Alecto Irene Perez
2025-05-18 13:02:47 -04:00
committed by GitHub
parent d7614381ab
commit d9364ce284
4 changed files with 182 additions and 1 deletions
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13
cmake/testing.cmake
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@@ -79,3 +79,16 @@ function(ASSERT_NOT_EXISTS file)
message(FATAL_ERROR "assertion failed: file ${file} exists")
endif()
endfunction()
function(ASSERT_CONTENTS_EQUAL file content)
if(EXISTS ${file})
file(READ ${file} file_content)
if(content STREQUAL file_content)
message(STATUS "test passed: '${file}' exists and contains '${content}'")
else()
message(FATAL_ERROR "assertion failed: file '${file}' does not contain expected content.")
endif()
else()
message(FATAL_ERROR "assertion failed: file '${file} does not exist")
endif()
endfunction()