mirror of
https://github.com/jart/cosmopolitan.git
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fa20edc44d
- Remove most __ASSEMBLER__ __LINKER__ ifdefs - Rename libc/intrin/bits.h to libc/serialize.h - Block pthread cancelation in fchmodat() polyfill - Remove `clang-format off` statements in third_party
82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
#ifndef COSMOPOLITAN_LIBC_TESTLIB_SUBPROCESS_H_
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#define COSMOPOLITAN_LIBC_TESTLIB_SUBPROCESS_H_
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#include "libc/calls/calls.h"
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#include "libc/macros.internal.h"
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#include "libc/runtime/runtime.h"
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#include "libc/testlib/testlib.h"
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COSMOPOLITAN_C_START_
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/**
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* @fileoverview Test Subprocess Helper Macros
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*
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* These macros may be used to run unit tests in a subprocess. It's
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* particularly useful when testing code that causes the process to die:
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*
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* TEST(term, test) {
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* SPAWN(fork);
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* raise(SIGUSR1);
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* TERMS(SIGUSR1);
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* }
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*
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* The default action for both EXITS() and TERMS() is _Exit(0), unless
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* an EXPECT_FOO() macro failed, in which case the status is non-zero.
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*
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* TEST(my, test) {
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* SPAWN(fork);
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* // do stuff
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* EXITS(0);
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* }
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*
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* You can also nest subprocesses:
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*
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* TEST(exit, test) {
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* SPAWN(fork);
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* SPAWN(vfork);
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* _Exit(2);
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* EXITS(2);
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* _Exit(1);
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* EXITS(1);
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* }
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*
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* The above are shorthand for:
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*
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* TEST(my, test) {
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* SPAWN(fork);
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* // communicate with parent
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* PARENT();
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* // communicate with child
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* WAIT(exit, 0)
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* }
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*
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* These macros cause a local variable named `child` with the child pid
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* to be defined.
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*/
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#define SPAWN(METHOD) \
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{ \
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int child, _failed = g_testlib_failed; \
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ASSERT_NE(-1, (child = METHOD())); \
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if (!child) {
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#define EXITS(CODE) \
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PARENT() \
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WAIT(exit, CODE)
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#define TERMS(SIG) \
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PARENT() \
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WAIT(term, SIG)
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#define PARENT() \
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_Exit(MAX(0, MIN(255, g_testlib_failed - _failed))); \
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}
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#define WAIT(KIND, CODE) \
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testlib_waitfor##KIND(__FILE__, __LINE__, #CODE, CODE, child); \
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}
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void testlib_waitforexit(const char *, int, const char *, int, int);
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void testlib_waitforterm(const char *, int, const char *, int, int);
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COSMOPOLITAN_C_END_
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#endif /* COSMOPOLITAN_LIBC_TESTLIB_SUBPROCESS_H_ */
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