Begin conformance test

I'm not sure the details of this strategy can actually be made to work.
But, something can.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/code_point.zig b/src/code_point.zig
index b3c9aea..79ee5cd 100644
--- a/src/code_point.zig
+++ b/src/code_point.zig
@@ -10,6 +10,11 @@ pub const CodePoint = struct {
     code: u21,
     len: u3,
     offset: u32,
+
+    /// Return the slice of this codepoint, given the original string.
+    pub fn bytes(cp: CodePoint, str: []const u8) []const u8 {
+        return str[cp.offset..][0..cp.len];
+    }
 };
 
 /// This function is deprecated and will be removed in a later release.