test: - '\' at end of last line in query discards that instruction

See #3137.

Author: claremacrae

tests/Query/Query.test.ts

@@ -556,6 +556,13 @@ describe('Query parsing', () => {
         expect(new Query('short mode\nfull').queryLayoutOptions.shortMode).toEqual(false);
     });
 
+    it.failing('should cope with missing end-of-line character in query ending with continuation character', () => {
+        // See https://github.com/obsidian-tasks-group/obsidian-tasks/issues/3137
+        const query = new Query('path includes query.md \\');
+        expect(query.filters.length).toEqual(1);
+        expect(query.filters[0].instruction).toEqual('path includes query.md');
+    });
+
     describe('should include instruction in parsing error messages', () => {
         function getQueryError(source: string) {
             return new Query(source, new TasksFile('Example Path.md')).error;