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awesome/tests/examples/CMakeLists.txt

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CMake
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# This module is designed to allow the Awesome documentation examples to be
# tested.
#
# It shims enough of the Awesome C API to allow code to be executed without an
# actual X server or running Awesome process. These tests are not genuine
# integration tests, but they are the next best thing.
#
# As secondary goals, this module also generates images of the test result
# where relevant. Those images are used by the documentation and help the
# developers track user interface regressions and glitches. Finally, it also
# helps to find broken code.
if(NOT DEFINED PROJECT_NAME)
project(awesome-tests-examples NONE)
endif()
cmake_minimum_required(VERSION 3.0.0)
# Get and update the LUA_PATH so the scripts can be executed without awesome.
execute_process(COMMAND lua -e "p = package.path:gsub(';', '\\\\;'); io.stdout:write(p)"
OUTPUT_VARIABLE "LUA_PATH_")
# Allow to use the example tests by themselves.
# This was used on Travis for separate coverage reporting, but is not really
# required anymore.
if(NOT SOURCE_DIR AND ${CMAKE_CURRENT_SOURCE_DIR} MATCHES "/tests/examples")
get_filename_component(TOP_SOURCE_DIR
"${CMAKE_CURRENT_SOURCE_DIR}/../.." ABSOLUTE)
else()
set(TOP_SOURCE_DIR ${CMAKE_SOURCE_DIR})
endif()
if (DO_COVERAGE)
execute_process(
COMMAND env "SOURCE_DIRECTORY=${TOP_SOURCE_DIR}" lua -e "require('luacov.runner')('${TOP_SOURCE_DIR}/.luacov')"
RESULT_VARIABLE TEST_RESULT
ERROR_VARIABLE TEST_ERROR
ERROR_STRIP_TRAILING_WHITESPACE)
if (TEST_RESULT OR NOT TEST_ERROR STREQUAL "")
message(${TEST_ERROR})
message(FATAL_ERROR "Failed to run luacov.runner.")
endif()
set(LUA_COV_RUNNER lua "-erequire('luacov.runner')('${TOP_SOURCE_DIR}/.luacov')")
else()
set(LUA_COV_RUNNER lua)
endif()
if (STRICT_TESTS)
set(IGNORE_ERRORS)
else()
set(IGNORE_ERRORS "||" "true")
endif()
# Add the main awesome lua libraries.
set(LUA_PATH_ "\
${TOP_SOURCE_DIR}/lib/?.lua\\;\
${TOP_SOURCE_DIR}/lib/?/init.lua\\;\
${TOP_SOURCE_DIR}/lib/?\\;\
${TOP_SOURCE_DIR}/themes/?.lua\\;\
${TOP_SOURCE_DIR}/themes/?\\;\
${LUA_PATH_}")
# Add the C API shims.
set(LUA_PATH_ "\
${TOP_SOURCE_DIR}/tests/examples/shims/?.lua\\;\
${TOP_SOURCE_DIR}/tests/examples/shims/?/init.lua\\;\
${TOP_SOURCE_DIR}/tests/examples/shims/?\\;\
${LUA_PATH_}")
# $SOURCE_DIRECTORY is used by .luacov.
set(LUA_COV_RUNNER env -u LUA_PATH_5_1 -u LUA_PATH_5_2 -u LUA_PATH_5_3 "LUA_PATH=${LUA_PATH_}" "AWESOME_THEMES_PATH=${TOP_SOURCE_DIR}/themes/" "SOURCE_DIRECTORY=${TOP_SOURCE_DIR}" ${LUA_COV_RUNNER})
# The documentation images directory.
set(IMAGE_DIR "${CMAKE_BINARY_DIR}/doc/images")
file(MAKE_DIRECTORY "${IMAGE_DIR}")
# Escape potentially multiline strings to be part of the API doc.
# * add "--" in front of each lines
# * add a custom prefix in front of each lines
# * drop empty lines
# * convert --DOC_NEWLINE lines into empty lines
# * drop lines ending with "--DOC_SOMETHING", they are handled elsewhere
function(escape_string variable content escaped_content line_prefix)
# If DOC_HIDE_ALL is present, do nothing.
if(variable MATCHES "--DOC_HIDE_ALL")
return()
endif()
string(REGEX REPLACE "\n" ";" var_lines "${variable}")
set(tmp_output ${content})
foreach (LINE ${var_lines})
# ;; will drop the line, but " ;" will create an empty line
string(REGEX REPLACE "--DOC_NEWLINE" " " LINE "${LINE}")
if(NOT LINE MATCHES "^.*--DOC_[A-Z]+")
set(tmp_output ${tmp_output}\n${DOC_LINE_PREFIX}${line_prefix}${LINE})
endif()
endforeach()
set(${escaped_content} ${tmp_output} PARENT_SCOPE)
endfunction()
# Extract lines with the --DOC_HEADER marker.
function(extract_header variable pre_output post_output)
string(REGEX REPLACE "\n" ";" var_lines "${variable}")
set(IS_POST 0)
foreach (LINE ${var_lines})
# This function doesn't escape the lines, so make sure they are
# already comments.
if(LINE MATCHES "^--.*--DOC_HEADER")
# Remove the header tag
string(REGEX REPLACE "[ ]*--DOC_HEADER" "" LINE "${LINE}")
# ldoc is picky about what happens after the first --@, so split
# the output on that.
if (NOT IS_POST AND LINE MATCHES "^--[ ]*@")
set(IS_POST 1)
endif()
if (IS_POST)
set(tmp_post_output ${tmp_post_output}\n${line_prefix}${LINE})
else()
set(tmp_pre_output ${tmp_pre_output}\n${line_prefix}${LINE})
endif()
endif()
endforeach()
set(${post_output} "${tmp_post_output}\n${DOC_LINE_PREFIX}" PARENT_SCOPE)
set(${pre_output} "${tmp_pre_output}\n${DOC_LINE_PREFIX}" PARENT_SCOPE)
endfunction()
# Read a code file and convert it to ldoc usage example.
# * add "--" in front of each lines
# * drop empty lines
# * convert " " lines into empty lines
# * drop lines ending with "--DOC_HIDE"
function(escape_code path escaped_content pre_header post_header)
file(READ ${path} path)
escape_string("${path}\n" "" escaped_code " ")
extract_header("${path}" example_pre_header example_post_header)
set(${escaped_content} ${escaped_code} PARENT_SCOPE)
set(${pre_header} ${example_pre_header} PARENT_SCOPE)
set(${post_header} ${example_post_header} PARENT_SCOPE)
endfunction()
# Find the template.lua that is closest to the given file. For example, if a
# template.lua is present in the same directory, its path will be returned. If
# one is present in the parent directory, that path is returned etc.
function(find_template result_variable file)
get_filename_component(path "${file}" DIRECTORY)
while(NOT EXISTS "${path}/template.lua")
set(last_path "${path}")
get_filename_component(path "${path}" DIRECTORY)
if(last_path STREQUAL path)
message(FATAL_ERROR "Failed to find template.lua for ${file}")
endif()
endwhile()
set(${result_variable} "${path}/template.lua" PARENT_SCOPE)
endfunction()
# Get the namespace of a file.
function(get_namespace result_variable file)
get_filename_component(path "${file}" DIRECTORY)
string(LENGTH "${TOP_SOURCE_DIR}/tests/examples" prefix_length)
string(REPLACE "/" "_" namespace "${path}")
string(SUBSTRING "${namespace}" "${prefix_length}" -1 namespace)
set(${result_variable} "${namespace}" PARENT_SCOPE)
endfunction()
# Execute a Lua file.
function(run_test test_path namespace escaped_content)
find_template(template "${test_path}")
file(READ ${test_path} tmp_content)
# Add "--" or " * " in front of each line. This is required for method doc,
#but not for documentation pages
if(tmp_content MATCHES "--DOC_ASTERISK")
set(DOC_LINE_PREFIX " * ")
elseif(NOT tmp_content MATCHES "--DOC_NO_DASH")
set(DOC_LINE_PREFIX "--")
endif()
# Do not use the @usage tag, but 4 spaces.
if(NOT tmp_content MATCHES "--DOC_NO_USAGE")
set(DOC_BLOCK_PREFIX "@usage")
endif()
# Does the text generate text output?
if(tmp_content MATCHES "--DOC_GEN_OUTPUT")
# The expected output is next to the .lua file in a .output.txt file
string(REPLACE ".lua" ".output.txt" expected_output_path ${test_path})
else()
set(expected_output_path "/dev/null")
endif()
# Get the file name without the extension.
get_filename_component(${test_path} TEST_FILE_NAME NAME)
set(IMAGE_PATH "${IMAGE_DIR}/AUTOGEN${namespace}_${TEST_FILE_NAME}")
# Read the code and turn it into an usage example.
escape_code(${test_path} TEST_CODE TEST_PRE_HEADER TEST_POST_HEADER)
# Build the documentation.
set(TEST_DOC_CONTENT "${TEST_PRE_HEADER}")
# Does the test generate an output image?
if(tmp_content MATCHES "--DOC_GEN_IMAGE")
set(OUTPUT_IMAGE_PATH "${IMAGE_PATH}.svg")
escape_string(
"![Usage example](../images/AUTOGEN${namespace}_${TEST_FILE_NAME}.svg)\n"
"${TEST_DOC_CONTENT}" TEST_DOC_CONTENT ""
)
else()
set(OUTPUT_IMAGE_PATH "")
endif()
# Does the text generate text output?
# If there is an output, assume it is relevant and add it to the
# documentation under the image.
if(tmp_content MATCHES "--DOC_GEN_OUTPUT")
if(EXISTS "${expected_output_path}")
file(READ "${expected_output_path}" expected_output)
endif()
if (NOT tmp_content MATCHES "--DOC_RAW_OUTPUT")
set(TEST_DOC_CONTENT
"${TEST_DOC_CONTENT}\n${DOC_LINE_PREFIX}\n${DOC_LINE_PREFIX}**Usage example output**:\n${DOC_LINE_PREFIX}"
)
# Markdown requires an empty line before and after, and 4 spaces.
escape_string(
"\n${expected_output}"
"${TEST_DOC_CONTENT}" TEST_DOC_CONTENT " "
)
else()
escape_string(
"\n${expected_output}"
"${TEST_DOC_CONTENT}" TEST_DOC_CONTENT ""
)
endif()
set(TEST_DOC_CONTENT "${TEST_DOC_CONTENT}\n${DOC_LINE_PREFIX}")
endif()
# If there is some @* content, append it.
set(TEST_DOC_CONTENT "${TEST_DOC_CONTENT}${TEST_POST_HEADER}")
# Only add it if there is something to display.
if(NOT ${TEST_CODE} STREQUAL "\n${DOC_LINE_PREFIX}")
escape_string(
" ${DOC_BLOCK_PREFIX}"
"${TEST_DOC_CONTENT}" TEST_DOC_CONTENT ""
)
set(TEST_DOC_CONTENT "${TEST_DOC_CONTENT}${TEST_CODE}")
endif()
file(RELATIVE_PATH rel_template "${TOP_SOURCE_DIR}" "${template}")
file(RELATIVE_PATH rel_test_path "${TOP_SOURCE_DIR}" "${test_path}")
# Add target to run this as test (via check-examples, not ignoring errors).
set(TARGET_NAME "run-${rel_test_path}")
STRING(REPLACE "/" "-" TARGET_NAME ${TARGET_NAME})
set(EXAMPLE_DOC_TEST_TARGETS ${EXAMPLE_DOC_TEST_TARGETS} ${TARGET_NAME}
PARENT_SCOPE)
add_custom_target(${TARGET_NAME}
COMMAND "${TOP_SOURCE_DIR}/tests/examples/runner.sh" "${expected_output_path}" ${LUA_COV_RUNNER} ${template} ${test_path} ${IMAGE_PATH}
VERBATIM)
if(NOT ${OUTPUT_IMAGE_PATH} STREQUAL "")
file(RELATIVE_PATH rel_output "${TOP_SOURCE_DIR}" "${OUTPUT_IMAGE_PATH}")
if(tmp_content MATCHES "--DOC_GEN_OUTPUT")
add_custom_command(
COMMAND "${TOP_SOURCE_DIR}/tests/examples/runner.sh" "${expected_output_path}" ${LUA_COV_RUNNER} ${template} ${test_path} ${IMAGE_PATH} ${IGNORE_ERRORS}
# COMMENT "Running ${rel_test_path} (via ${rel_template}, generating ${rel_output})"
DEPENDS ${template} ${test_path}
OUTPUT ${OUTPUT_IMAGE_PATH}
OUTPUT ${expected_output_path}
VERBATIM)
else()
add_custom_command(
COMMAND "${TOP_SOURCE_DIR}/tests/examples/runner.sh" "${expected_output_path}" ${LUA_COV_RUNNER} ${template} ${test_path} ${IMAGE_PATH} ${IGNORE_ERRORS}
# COMMENT "Running ${rel_test_path} (via ${rel_template}, generating ${rel_output})"
DEPENDS ${template} ${test_path}
OUTPUT ${OUTPUT_IMAGE_PATH}
VERBATIM)
endif()
set(EXAMPLE_DOC_GENERATED_FILES ${OUTPUT_IMAGE_PATH} ${EXAMPLE_DOC_GENERATED_FILES}
PARENT_SCOPE)
elseif(tmp_content MATCHES "--DOC_GEN_OUTPUT")
add_custom_command(
COMMAND "${TOP_SOURCE_DIR}/tests/examples/runner.sh" "${expected_output_path}" ${LUA_COV_RUNNER} ${template} ${test_path} "" ${IGNORE_ERRORS}
# COMMENT "Running ${rel_test_path} (via ${rel_template}, generating ${rel_output})"
DEPENDS ${template} ${test_path}
OUTPUT ${expected_output_path}
VERBATIM)
endif()
# Export the outout to the parent scope.
set(${escaped_content} "${TEST_DOC_CONTENT}" PARENT_SCOPE)
endfunction()
# Find all test files, and run them (generating custom commands for updating them).
file(GLOB_RECURSE test_files FOLLOW_SYMLINKS LIST_DIRECTORIES false
"${TOP_SOURCE_DIR}/tests/examples/*.lua")
# Find and run all test files.
foreach(file ${test_files})
if ((NOT "${file}" MATCHES ".*/shims/.*")
AND (NOT "${file}" MATCHES ".*/template.lua"))
# Get the file name without the extension.
get_filename_component(TEST_FILE_NAME ${file} NAME_WE)
get_namespace(namespace "${file}")
run_test("${file}" "${namespace}" ESCAPED_CODE_EXAMPLE)
# Set the test name.
set(TEST_NAME DOC${namespace}_${TEST_FILE_NAME}_EXAMPLE)
# Anything called @DOC_`namespace`_EXAMPLE@
# in the Lua or C sources will be replaced by the content of that
# variable during the pre-processing.
# While at it, replace \" created by CMake by ',
# &quot; wont work in <code>.
string(REPLACE "\"" "'" ${TEST_NAME} ${ESCAPED_CODE_EXAMPLE})
endif()
endforeach()
add_custom_target(generate-examples DEPENDS ${EXAMPLE_DOC_GENERATED_FILES})
add_custom_target(check-examples DEPENDS ${EXAMPLE_DOC_TEST_TARGETS})
# vim: filetype=cmake:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80:foldmethod=marker
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