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test: add wasi test for freopen()
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This test provides missing coverage for __wasi_fd_renumber().

PR-URL: #31432
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
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cjihrig authored and codebytere committed Feb 17, 2020
1 parent 9811ebe commit 38ea536
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Showing 4 changed files with 18 additions and 0 deletions.
1 change: 1 addition & 0 deletions test/fixtures/wasi/input2.txt
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hello from input2.txt
16 changes: 16 additions & 0 deletions test/wasi/c/freopen.c
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#include <assert.h>
#include <stdio.h>

int main() {
FILE* file_orig = fopen("/sandbox/input.txt", "r");
assert(file_orig != NULL);
FILE* file_new = freopen("/sandbox/input2.txt", "r", file_orig);
assert(file_new != NULL);

int c = fgetc(file_new);
while (c != EOF) {
int wrote = fputc((char)c, stdout);
assert(wrote != EOF);
c = fgetc(file_new);
}
}
1 change: 1 addition & 0 deletions test/wasi/test-wasi.js
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Expand Up @@ -60,6 +60,7 @@ if (process.argv[2] === 'wasi-child') {
runWASI({ test: 'clock_getres' });
runWASI({ test: 'exitcode', exitCode: 120 });
runWASI({ test: 'fd_prestat_get_refresh' });
runWASI({ test: 'freopen', stdout: `hello from input2.txt${EOL}` });
runWASI({ test: 'getentropy' });
runWASI({ test: 'getrusage' });
runWASI({ test: 'gettimeofday' });
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