test: core: add error and ringbuffer tests

core-test/errors.c

@@ -0,0 +1,6 @@
+#include <blue/core/error.h>
+
+int main(void)
+{
+	return 0;
+}

core-test/ringbuffers.c

@@ -0,0 +1,66 @@
+#include <assert.h>
+#include <blue/core/ringbuffer.h>
+#include <stdio.h>
+#include <string.h>
+
+#define BUF_SIZE 32
+
+int main(void)
+{
+	b_ringbuffer *buf = b_ringbuffer_create(BUF_SIZE);
+
+	size_t read_available = b_ringbuffer_available_data_remaining(buf);
+	size_t write_available = b_ringbuffer_write_capacity_remaining(buf);
+
+	printf("read available: %zu\n", read_available);
+	printf("write available: %zu\n", write_available);
+
+	assert(read_available == 0);
+	assert(write_available == BUF_SIZE - 1);
+
+	const char ch = 'X';
+	printf("putc(%c)\n", ch);
+
+	b_ringbuffer_putc(buf, ch);
+	read_available = b_ringbuffer_available_data_remaining(buf);
+	write_available = b_ringbuffer_write_capacity_remaining(buf);
+	printf("read available: %zu\n", read_available);
+	printf("write available: %zu\n", write_available);
+	assert(read_available == 1);
+	assert(write_available == BUF_SIZE - 2);
+
+	int c = b_ringbuffer_getc(buf);
+	printf("getc() = %c\n", c);
+	assert(c == ch);
+
+	const char s[]
+		= "A very long string that is designed to overflow the "
+		  "ringbuffer";
+	size_t s_len = strlen(s);
+
+	size_t nr_written = 0;
+	printf("write(%s)\n", s);
+	b_ringbuffer_write(buf, s, s_len, &nr_written);
+	read_available = b_ringbuffer_available_data_remaining(buf);
+	write_available = b_ringbuffer_write_capacity_remaining(buf);
+	printf("read available: %zu\n", read_available);
+	printf("write available: %zu\n", write_available);
+	assert(read_available == BUF_SIZE - 1);
+	assert(write_available == 0);
+
+	char data[BUF_SIZE + 32] = {0};
+	size_t nr_read = 0;
+	b_ringbuffer_read(buf, data, sizeof data, &nr_read);
+	printf("read(%u) = %zu bytes\n", BUF_SIZE + 32, nr_read);
+	printf("         = %s\n", data);
+	read_available = b_ringbuffer_available_data_remaining(buf);
+	write_available = b_ringbuffer_write_capacity_remaining(buf);
+	printf("read available: %zu\n", read_available);
+	printf("write available: %zu\n", write_available);
+	assert(read_available == 0);
+	assert(write_available == BUF_SIZE - 1);
+
+	b_ringbuffer_destroy(buf);
+
+	return 0;
+}