fn testCollapseRepeats(str: []const u8, elem: u8, expected: []const u8) !void
str: []const u8
elem: u8
expected: []const u8
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fn testCollapseRepeats(str: []const u8, elem: u8, expected: []const u8) !void { const mutable = try std.testing.allocator.dupe(u8, str); defer std.testing.allocator.free(mutable); try testing.expect(std.mem.eql(u8, collapseRepeats(u8, mutable, elem), expected)); }