test: add cross-module tests

test/cat.c

@@ -0,0 +1,37 @@
+#include <blue/core/stream.h>
+#include <blue/io/file.h>
+#include <blue/io/path.h>
+#include <blue/object/string.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_status status = b_file_open(NULL, path, B_FILE_READ_ONLY, &file);
+	if (!B_OK(status)) {
+		fprintf(stderr, "cannot open file %s\n", path_cstr);
+		return -1;
+	}
+	b_stream *src_stream, *dest_stream;
+
+	b_file_open_stream(file, &src_stream);
+
+	b_string *str = b_string_create();
+	b_stream_pipeline *pipeline;
+	status = b_string_open_stream(str, &dest_stream);
+
+	b_stream_pipeline_create(1024, &pipeline);
+
+	size_t nr_read;
+	b_stream_read_all_bytes_s(src_stream, dest_stream, pipeline, &nr_read);
+
+	printf("%s\n", b_string_ptr(str));
+	return 0;
+}