78 lines
2.3 KiB
Plaintext
78 lines
2.3 KiB
Plaintext
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int main() {
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printf("=== File Seek Operations Tests ===\n");
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printf("Test 1: Create test file\n");
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int f = fopen("seek_test.txt", "w");
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if (f == 0) {
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printf("ERROR: Could not create file\n");
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return 1;
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}
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fputs(f, "0123456789ABCDEFGHIJ");
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fclose(f);
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printf("PASS: File created with content\n");
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printf("Test 2: ftell() - get current position\n");
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f = fopen("seek_test.txt", "r");
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int pos = ftell(f);
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printf("Initial position: %d\n", pos);
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char *line = fgets(f, 5);
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printf("Read: '%s'\n", line);
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pos = ftell(f);
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printf("Position after reading 5 bytes: %d\n", pos);
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fclose(f);
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printf("PASS: ftell() works\n");
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printf("Test 3: fseek() with SEEK_SET\n");
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f = fopen("seek_test.txt", "r");
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fseek(f, 10, SEEK_SET());
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pos = ftell(f);
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printf("Position after fseek(10, SEEK_SET): %d\n", pos);
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line = fgets(f, 5);
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printf("Read from position 10: '%s'\n", line);
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fclose(f);
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printf("PASS: fseek with SEEK_SET works\n");
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printf("Test 4: fseek() with SEEK_CUR\n");
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f = fopen("seek_test.txt", "r");
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line = fgets(f, 5);
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printf("First read: '%s'\n", line);
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fseek(f, 3, SEEK_CUR());
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pos = ftell(f);
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printf("Position after fseek(3, SEEK_CUR): %d\n", pos);
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line = fgets(f, 5);
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printf("Read after seek: '%s'\n", line);
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fclose(f);
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printf("PASS: fseek with SEEK_CUR works\n");
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printf("Test 5: fseek() with SEEK_END\n");
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f = fopen("seek_test.txt", "r");
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fseek(f, -5, SEEK_END());
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pos = ftell(f);
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printf("Position after fseek(-5, SEEK_END): %d\n", pos);
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line = fgets(f, 10);
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printf("Read from near end: '%s'\n", line);
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fclose(f);
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printf("PASS: fseek with SEEK_END works\n");
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printf("Test 6: Random access pattern\n");
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f = fopen("seek_test.txt", "r");
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fseek(f, 5, SEEK_SET());
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line = fgets(f, 3);
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printf("Position 5: '%s'\n", line);
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fseek(f, 0, SEEK_SET());
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line = fgets(f, 3);
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printf("Position 0: '%s'\n", line);
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fseek(f, 15, SEEK_SET());
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line = fgets(f, 3);
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printf("Position 15: '%s'\n", line);
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fclose(f);
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printf("PASS: Random access works\n");
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printf("Test 7: Cleanup\n");
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fremove("seek_test.txt");
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printf("PASS: File removed\n");
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printf("\n=== All File Seek Tests Completed ===\n");
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return 0;
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}
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