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Implement buffer interface and tests

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- Implement buffer_open_file/string, buffer_read, buffer_close in v0/src/buffer.c

- Add tests in v0/tests/test_buffer.c and test_buffer.txt; register tests in v0/tests/test.c

- Update v0/include.mk and Makefile

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Sebastiaan de Schaetzen
2026-04-24 08:07:38 +02:00
parent f6a1b290fc
commit 7ff3f76de5
7 changed files with 185 additions and 25 deletions
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v0/tests/test_buffer.c
+43
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@@ -0,0 +1,43 @@
#include "test.h"
#include "../src/buffer.h"
#include <stdio.h>
// @copilot add test for reading from a file.
// Create test_buffer_xyz.txt if you need multiple,
// otherwise simply test_buffer.txt
static void test_buffer_string_reads_chars(void) {
Buffer* buf = buffer_open_string("hi");
if (buffer_read(buf) != 'h') fail("expected 'h'");
if (buffer_read(buf) != 'i') fail("expected 'i'");
buffer_close(buf);
}
static void test_buffer_string_eof(void) {
Buffer* buf = buffer_open_string("");
if (buffer_read(buf) != (char)-1) fail("expected -1 on empty string");
buffer_close(buf);
}
static void test_buffer_string_eof_after_content(void) {
Buffer* buf = buffer_open_string("a");
buffer_read(buf);
if (buffer_read(buf) != (char)-1) fail("expected -1 after end of string");
buffer_close(buf);
}
static void test_buffer_file_reads_chars(void) {
Buffer* buf = buffer_open_file("v0/tests/test_buffer.txt");
if (buf == NULL) fail("could not open file");
if (buffer_read(buf) != 'a') fail("expected 'a'");
if (buffer_read(buf) != 'b') fail("expected 'b'");
if (buffer_read(buf) != 'c') fail("expected 'c'");
if (buffer_read(buf) != '\n') fail("expected newline after content");
if (buffer_read(buf) != (char)-1) fail("expected -1 after file");
buffer_close(buf);
}
static void test_buffer_file_open_fail(void) {
Buffer* buf = buffer_open_file("v0/tests/does_not_exist.txt");
if (buf != NULL) fail("expected NULL for non-existent file");
}