1 # Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 # This file is meant to be included into an target to create a unittest that 6 # invokes a set of no-compile tests. A no-compile test is a test that asserts 7 # a particular construct will not compile. 8 # 9 # Also see: 10 # http://dev.chromium.org/developers/testing/no-compile-tests 11 # 12 # To use this, create a gyp target with the following form: 13 # { 14 # 'target_name': 'my_module_nc_unittests', 15 # 'type': 'executable', 16 # 'sources': [ 17 # 'nc_testset_1.nc', 18 # 'nc_testset_2.nc', 19 # ], 20 # 'includes': ['path/to/this/gypi/file'], 21 # } 22 # 23 # The .nc files are C++ files that contain code we wish to assert will not 24 # compile. Each individual test case in the file should be put in its own 25 # #ifdef section. The expected output should be appended with a C++-style 26 # comment that has a python list of regular expressions. This will likely 27 # be greater than 80-characters. Giving a solid expected output test is 28 # important so that random compile failures do not cause the test to pass. 29 # 30 # Example .nc file: 31 # 32 # #if defined(TEST_NEEDS_SEMICOLON) // [r"expected ',' or ';' at end of input"] 33 # 34 # int a = 1 35 # 36 # #elif defined(TEST_NEEDS_CAST) // [r"invalid conversion from 'void*' to 'char*'"] 37 # 38 # void* a = NULL; 39 # char* b = a; 40 # 41 # #endif 42 # 43 # If we needed disable TEST_NEEDS_SEMICOLON, then change the define to: 44 # 45 # DISABLE_TEST_NEEDS_SEMICOLON 46 # TEST_NEEDS_CAST 47 # 48 # The lines above are parsed by a regexp so avoid getting creative with the 49 # formatting or ifdef logic; it will likely just not work. 50 # 51 # Implementation notes: 52 # The .nc files are actually processed by a python script which executes the 53 # compiler and generates a .cc file that is empty on success, or will have a 54 # series of #error lines on failure, and a set of trivially passing gunit 55 # TEST() functions on success. This allows us to fail at the compile step when 56 # something goes wrong, and know during the unittest run that the test was at 57 # least processed when things go right. 58 59 { 60 # TODO(awong): Disabled until http://crbug.com/105388 is resolved. 61 'sources/': [['exclude', '\\.nc$']], 62 'conditions': [ 63 [ 'OS=="linux" and clang==0', { 64 'rules': [ 65 { 66 'variables': { 67 'nocompile_driver': '<(DEPTH)/tools/nocompile_driver.py', 68 'nc_result_path': ('<(INTERMEDIATE_DIR)/<(module_dir)/' 69 '<(RULE_INPUT_ROOT)_nc.cc'), 70 }, 71 'rule_name': 'run_nocompile', 72 'extension': 'nc', 73 'inputs': [ 74 '<(nocompile_driver)', 75 ], 76 'outputs': [ 77 '<(nc_result_path)' 78 ], 79 'action': [ 80 'python', 81 '<(nocompile_driver)', 82 '4', # number of compilers to invoke in parallel. 83 '<(RULE_INPUT_PATH)', 84 '-Wall -Werror -Wfatal-errors -I<(DEPTH)', 85 '<(nc_result_path)', 86 ], 87 'message': 'Generating no compile results for <(RULE_INPUT_PATH)', 88 'process_outputs_as_sources': 1, 89 }, 90 ], 91 }, { 92 'sources/': [['exclude', '\\.nc$']] 93 }], # 'OS=="linux" and clang=="0"' 94 ], 95 } 96 97
