core: add hash and rope tests

core-test/ropes.c

@@ -0,0 +1,28 @@
+#include <blue/core/rope.h>
+#include <stdio.h>
+
+int main(void)
+{
+	b_rope a = B_ROPE_CHAR('a');
+	b_rope b = B_ROPE_CSTR_STATIC("Hello, world!");
+	b_rope c = B_ROPE_INT(-4096);
+	b_rope d = B_ROPE_UINT(4096);
+
+	b_rope str;
+
+	const b_rope *ropes[] = {
+		&a,
+		&b,
+		&c,
+		&d,
+	};
+
+	b_rope_join(&str, ropes, sizeof ropes / sizeof ropes[0]);
+
+	char cstr[1024];
+	b_rope_to_cstr(&str, cstr, sizeof cstr);
+	b_rope_destroy(&str);
+
+	printf("%s\n", cstr);
+	return 0;
+}