test: add and update a few tests

test/test.toml

@@ -0,0 +1 @@
+tab = 32

test/toml-read.c

@@ -0,0 +1,48 @@
+#include <blue/io/file.h>
+#include <blue/io/path.h>
+#include <blue/serial.h>
+#include <stdio.h>
+
+int main(int argc, const char **argv)
+{
+	if (argc < 2) {
+		return -1;
+	}
+
+	const char *path_cstr = argv[1];
+	b_path *path = b_path_create_from_cstr(path_cstr);
+
+	b_file *file = NULL;
+	b_result result = b_file_open(NULL, path, B_FILE_READ_ONLY, &file);
+	if (b_result_is_error(result)) {
+		b_throw(result);
+		return -1;
+	}
+
+	b_stream *src_stream;
+
+	b_file_open_stream(file, &src_stream);
+
+	b_serial_ctx *ctx;
+	b_serial_ctx_create(&ctx);
+
+	b_object *data = NULL;
+	b_status status = b_serial_ctx_deserialise(
+		ctx, B_SERIAL_FORMAT_TOML, src_stream, &data, 0);
+	if (!B_OK(status)) {
+		fprintf(stderr, "cannot read data\n");
+		return -1;
+	}
+
+	if (!data) {
+		return 0;
+	}
+
+	b_to_string(B_OBJECT(data), b_stdout);
+	b_stream_write_char(b_stdout, '\n');
+
+	b_release(data);
+	b_serial_ctx_destroy(ctx);
+
+	return 0;
+}