kaguya
60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
#include <stdio.h>
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#include <assert.h>
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#include <string.h>
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#ifdef USE_HOST_LIBC
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#define TEST_FILE "fopen-host-libc.tmp"
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#else
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#define TEST_FILE "fopen.tmp"
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#endif
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int main() {
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FILE *file;
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char str[] = "mlibc fopen test";
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char str2[] = " mlibc appending";
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char completestr[] = "mlibc fopen test mlibc appending";
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char buffer[100];
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char buffer2[100];
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// Clear all the buffers to zero.
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memset(buffer, 0, sizeof(buffer));
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memset(buffer2, 0, sizeof(buffer2));
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// Open the file for writing.
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file = fopen(TEST_FILE, "w");
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assert(file);
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// Write string minus null terminator, flush and close.
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fwrite(str, 1, sizeof(str) - 1, file);
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fflush(file);
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fclose(file);
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// Open the file for reading.
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file = fopen(TEST_FILE, "r");
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assert(file);
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// Verify that we read back the written string and close the file.
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assert(fread(buffer, 1, sizeof(str) - 1, file));
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assert(!strcmp(buffer, str));
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fclose(file);
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// Open the file in appending mode, append string 2 (minus the null terminator) to the file, flush and close.
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file = fopen(TEST_FILE, "a");
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fwrite(str2, 1, sizeof(str2) - 1, file);
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fflush(file);
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fclose(file);
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// Open the file for reading again, verify the contents, close the file and return.
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file = fopen(TEST_FILE, "r");
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assert(fread(buffer2, 1, sizeof(completestr) - 1, file));
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assert(!strcmp(buffer2, completestr));
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fclose(file);
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// Check that stdout, stdin and stderr can be closed by the application (issue #12).
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fclose(stdout);
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fclose(stdin);
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fclose(stderr);
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return 0;
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}
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