iXML Community Group Test Suite
23 Oct 2023 (22 Nov 2023)
Top-level catalog for tests in the iXML Community Group Test Suite.
Tests have been contributed from several sources, but the core of the test collection are the tests contributed by Steven Pemberton in December 2021.
Ambiguous inputs
01 Jun 2022
Tests provided by Steven Pemberton in December 2021, with corrections of 21 December. Reorganized by Norm Tovey-Walsh, February 2022.
ambig2
Created 16 Dec 2021 by SP
Invisible XML Grammar
a: "a"* ; "b"*.
Test case: ambig2
Repository URI: …/tests/ambiguous/test-catalog.xml
Created 16 Dec 2021 by SP
Updated 30 Dec 2021 by MSM
add description and second result
The grammar is a: "a"* ; "b"*.
and the input is the empty string.
If the grammar is rewritten to BNF, it will clearly have two parse trees against the BNF grammar, but it does not have two parse trees against the EBNF grammar.
So MSM has added an alternative result
which does
What the spec should say will require careful discussion.
Input string (0 characters)
Expected results (one of)
<!-- AMBIGUOUS
The input from line.pos 1.1 to 1.1 can be interpreted as 'a' in 2 different ways:
1: a[1.1:]: "a"*[:1.1]
2: a[1.1:]: "b"*[:1.1]
--><a xmlns:ixml="http://invisiblexml.org/NS" ixml:state="ambiguous"/>
<!-- UNAMBIGUOUS
The input from line.pos 1.1 to 1.1 can be interpreted as 'a' in 2 different ways:
1: a[1.1:]: "a"*[:1.1]
2: a[1.1:]: "b"*[:1.1]
But there is only one parse tree.
--><a/>