| /* A self-testing framework, for use by -fself-test. |
| Copyright (C) 2015-2017 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify it under |
| the terms of the GNU General Public License as published by the Free |
| Software Foundation; either version 3, or (at your option) any later |
| version. |
| |
| GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef GCC_SELFTEST_H |
| #define GCC_SELFTEST_H |
| |
| /* The selftest code should entirely disappear in a production |
| configuration, hence we guard all of it with #if CHECKING_P. */ |
| |
| #if CHECKING_P |
| |
| namespace selftest { |
| |
| /* A struct describing the source-location of a selftest, to make it |
| easier to track down failing tests. */ |
| |
| struct location |
| { |
| location (const char *file, int line, const char *function) |
| : m_file (file), m_line (line), m_function (function) {} |
| |
| const char *m_file; |
| int m_line; |
| const char *m_function; |
| }; |
| |
| /* A macro for use in selftests and by the ASSERT_ macros below, |
| constructing a selftest::location for the current source location. */ |
| |
| #define SELFTEST_LOCATION \ |
| (::selftest::location (__FILE__, __LINE__, __FUNCTION__)) |
| |
| /* The entrypoint for running all tests. */ |
| |
| extern void run_tests (); |
| |
| /* Record the successful outcome of some aspect of the test. */ |
| |
| extern void pass (const location &loc, const char *msg); |
| |
| /* Report the failed outcome of some aspect of the test and abort. */ |
| |
| extern void fail (const location &loc, const char *msg) |
| ATTRIBUTE_NORETURN; |
| |
| /* As "fail", but using printf-style formatted output. */ |
| |
| extern void fail_formatted (const location &loc, const char *fmt, ...) |
| ATTRIBUTE_PRINTF_2 ATTRIBUTE_NORETURN; |
| |
| /* Implementation detail of ASSERT_STREQ. */ |
| |
| extern void assert_streq (const location &loc, |
| const char *desc_expected, const char *desc_actual, |
| const char *val_expected, const char *val_actual); |
| |
| /* Implementation detail of ASSERT_STR_CONTAINS. */ |
| |
| extern void assert_str_contains (const location &loc, |
| const char *desc_haystack, |
| const char *desc_needle, |
| const char *val_haystack, |
| const char *val_needle); |
| |
| /* A named temporary file for use in selftests. |
| Usable for writing out files, and as the base class for |
| temp_source_file. |
| The file is unlinked in the destructor. */ |
| |
| class named_temp_file |
| { |
| public: |
| named_temp_file (const char *suffix); |
| ~named_temp_file (); |
| const char *get_filename () const { return m_filename; } |
| |
| private: |
| char *m_filename; |
| }; |
| |
| /* A class for writing out a temporary sourcefile for use in selftests |
| of input handling. */ |
| |
| class temp_source_file : public named_temp_file |
| { |
| public: |
| temp_source_file (const location &loc, const char *suffix, |
| const char *content); |
| }; |
| |
| /* Various selftests involving location-handling require constructing a |
| line table and one or more line maps within it. |
| |
| For maximum test coverage we want to run these tests with a variety |
| of situations: |
| - line_table->default_range_bits: some frontends use a non-zero value |
| and others use zero |
| - the fallback modes within line-map.c: there are various threshold |
| values for source_location/location_t beyond line-map.c changes |
| behavior (disabling of the range-packing optimization, disabling |
| of column-tracking). We can exercise these by starting the line_table |
| at interesting values at or near these thresholds. |
| |
| The following struct describes a particular case within our test |
| matrix. */ |
| |
| struct line_table_case; |
| |
| /* A class for overriding the global "line_table" within a selftest, |
| restoring its value afterwards. At most one instance of this |
| class can exist at once, due to the need to keep the old value |
| of line_table as a GC root. */ |
| |
| class line_table_test |
| { |
| public: |
| /* Default constructor. Override "line_table", using sane defaults |
| for the temporary line_table. */ |
| line_table_test (); |
| |
| /* Constructor. Override "line_table", using the case described by C. */ |
| line_table_test (const line_table_case &c); |
| |
| /* Destructor. Restore the saved line_table. */ |
| ~line_table_test (); |
| }; |
| |
| /* Run TESTCASE multiple times, once for each case in our test matrix. */ |
| |
| extern void |
| for_each_line_table_case (void (*testcase) (const line_table_case &)); |
| |
| /* Read the contents of PATH into memory, returning a 0-terminated buffer |
| that must be freed by the caller. |
| Fail (and abort) if there are any problems, with LOC as the reported |
| location of the failure. */ |
| |
| extern char *read_file (const location &loc, const char *path); |
| |
| /* A helper function for writing tests that interact with the |
| garbage collector. */ |
| |
| extern void forcibly_ggc_collect (); |
| |
| /* Convert a path relative to SRCDIR/gcc/testsuite/selftests |
| to a real path (either absolute, or relative to pwd). |
| The result should be freed by the caller. */ |
| |
| extern char *locate_file (const char *path); |
| |
| /* The path of SRCDIR/testsuite/selftests. */ |
| |
| extern const char *path_to_selftest_files; |
| |
| /* Declarations for specific families of tests (by source file), in |
| alphabetical order. */ |
| extern void bitmap_c_tests (); |
| extern void diagnostic_c_tests (); |
| extern void diagnostic_show_locus_c_tests (); |
| extern void edit_context_c_tests (); |
| extern void et_forest_c_tests (); |
| extern void fold_const_c_tests (); |
| extern void fibonacci_heap_c_tests (); |
| extern void function_tests_c_tests (); |
| extern void gimple_c_tests (); |
| extern void ggc_tests_c_tests (); |
| extern void hash_map_tests_c_tests (); |
| extern void hash_set_tests_c_tests (); |
| extern void input_c_tests (); |
| extern void pretty_print_c_tests (); |
| extern void read_rtl_function_c_tests (); |
| extern void rtl_tests_c_tests (); |
| extern void selftest_c_tests (); |
| extern void spellcheck_c_tests (); |
| extern void spellcheck_tree_c_tests (); |
| extern void sreal_c_tests (); |
| extern void store_merging_c_tests (); |
| extern void typed_splay_tree_c_tests (); |
| extern void tree_c_tests (); |
| extern void tree_cfg_c_tests (); |
| extern void vec_c_tests (); |
| extern void wide_int_cc_tests (); |
| |
| extern int num_passes; |
| |
| } /* end of namespace selftest. */ |
| |
| /* Macros for writing tests. */ |
| |
| /* Evaluate EXPR and coerce to bool, calling |
| ::selftest::pass if it is true, |
| ::selftest::fail if it false. */ |
| |
| #define ASSERT_TRUE(EXPR) \ |
| ASSERT_TRUE_AT (SELFTEST_LOCATION, (EXPR)) |
| |
| /* Like ASSERT_TRUE, but treat LOC as the effective location of the |
| selftest. */ |
| |
| #define ASSERT_TRUE_AT(LOC, EXPR) \ |
| SELFTEST_BEGIN_STMT \ |
| const char *desc = "ASSERT_TRUE (" #EXPR ")"; \ |
| bool actual = (EXPR); \ |
| if (actual) \ |
| ::selftest::pass ((LOC), desc); \ |
| else \ |
| ::selftest::fail ((LOC), desc); \ |
| SELFTEST_END_STMT |
| |
| /* Evaluate EXPR and coerce to bool, calling |
| ::selftest::pass if it is false, |
| ::selftest::fail if it true. */ |
| |
| #define ASSERT_FALSE(EXPR) \ |
| ASSERT_FALSE_AT (SELFTEST_LOCATION, (EXPR)) |
| |
| /* Like ASSERT_FALSE, but treat LOC as the effective location of the |
| selftest. */ |
| |
| #define ASSERT_FALSE_AT(LOC, EXPR) \ |
| SELFTEST_BEGIN_STMT \ |
| const char *desc = "ASSERT_FALSE (" #EXPR ")"; \ |
| bool actual = (EXPR); \ |
| if (actual) \ |
| ::selftest::fail ((LOC), desc); \ |
| else \ |
| ::selftest::pass ((LOC), desc); \ |
| SELFTEST_END_STMT |
| |
| /* Evaluate EXPECTED and ACTUAL and compare them with ==, calling |
| ::selftest::pass if they are equal, |
| ::selftest::fail if they are non-equal. */ |
| |
| #define ASSERT_EQ(EXPECTED, ACTUAL) \ |
| ASSERT_EQ_AT ((SELFTEST_LOCATION), (EXPECTED), (ACTUAL)) |
| |
| /* Like ASSERT_EQ, but treat LOC as the effective location of the |
| selftest. */ |
| |
| #define ASSERT_EQ_AT(LOC, EXPECTED, ACTUAL) \ |
| SELFTEST_BEGIN_STMT \ |
| const char *desc = "ASSERT_EQ (" #EXPECTED ", " #ACTUAL ")"; \ |
| if ((EXPECTED) == (ACTUAL)) \ |
| ::selftest::pass ((LOC), desc); \ |
| else \ |
| ::selftest::fail ((LOC), desc); \ |
| SELFTEST_END_STMT |
| |
| /* Evaluate EXPECTED and ACTUAL and compare them with !=, calling |
| ::selftest::pass if they are non-equal, |
| ::selftest::fail if they are equal. */ |
| |
| #define ASSERT_NE(EXPECTED, ACTUAL) \ |
| SELFTEST_BEGIN_STMT \ |
| const char *desc = "ASSERT_NE (" #EXPECTED ", " #ACTUAL ")"; \ |
| if ((EXPECTED) != (ACTUAL)) \ |
| ::selftest::pass (SELFTEST_LOCATION, desc); \ |
| else \ |
| ::selftest::fail (SELFTEST_LOCATION, desc); \ |
| SELFTEST_END_STMT |
| |
| /* Evaluate EXPECTED and ACTUAL and compare them with strcmp, calling |
| ::selftest::pass if they are equal, |
| ::selftest::fail if they are non-equal. */ |
| |
| #define ASSERT_STREQ(EXPECTED, ACTUAL) \ |
| SELFTEST_BEGIN_STMT \ |
| ::selftest::assert_streq (SELFTEST_LOCATION, #EXPECTED, #ACTUAL, \ |
| (EXPECTED), (ACTUAL)); \ |
| SELFTEST_END_STMT |
| |
| /* Like ASSERT_STREQ, but treat LOC as the effective location of the |
| selftest. */ |
| |
| #define ASSERT_STREQ_AT(LOC, EXPECTED, ACTUAL) \ |
| SELFTEST_BEGIN_STMT \ |
| ::selftest::assert_streq ((LOC), #EXPECTED, #ACTUAL, \ |
| (EXPECTED), (ACTUAL)); \ |
| SELFTEST_END_STMT |
| |
| /* Evaluate HAYSTACK and NEEDLE and use strstr to determine if NEEDLE |
| is within HAYSTACK. |
| ::selftest::pass if NEEDLE is found. |
| ::selftest::fail if it is not found. */ |
| |
| #define ASSERT_STR_CONTAINS(HAYSTACK, NEEDLE) \ |
| SELFTEST_BEGIN_STMT \ |
| ::selftest::assert_str_contains (SELFTEST_LOCATION, #HAYSTACK, #NEEDLE, \ |
| (HAYSTACK), (NEEDLE)); \ |
| SELFTEST_END_STMT |
| |
| /* Evaluate PRED1 (VAL1), calling ::selftest::pass if it is true, |
| ::selftest::fail if it is false. */ |
| |
| #define ASSERT_PRED1(PRED1, VAL1) \ |
| SELFTEST_BEGIN_STMT \ |
| const char *desc = "ASSERT_PRED1 (" #PRED1 ", " #VAL1 ")"; \ |
| bool actual = (PRED1) (VAL1); \ |
| if (actual) \ |
| ::selftest::pass (SELFTEST_LOCATION, desc); \ |
| else \ |
| ::selftest::fail (SELFTEST_LOCATION, desc); \ |
| SELFTEST_END_STMT |
| |
| #define SELFTEST_BEGIN_STMT do { |
| #define SELFTEST_END_STMT } while (0) |
| |
| #endif /* #if CHECKING_P */ |
| |
| #endif /* GCC_SELFTEST_H */ |