Metadata
- Source
- FLUID-6156
- Type
- Bug
- Priority
- Major
- Status
- Open
- Resolution
- N/A
- Assignee
- Antranig Basman
- Reporter
- Antranig Basman
- Created
2017-05-12T10:53:34.894-0400 - Updated
2021-01-08T11:14:26.615-0500 - Versions
-
- 2.0
- Fixed Versions
- N/A
- Component
-
- Framework
Description
Our irregular defaults merging algorithm (which performs merging before expansion, unlike the system used for distributions, subcomponents, etc.) leads to the impossibility of a useful feature - it would be useful to be able to override values in derived grades by values which may (via an expander return) be undefined, and as a result, retaining the original value. This would ordinarily be possible, but, for example, the following code fails:
fluid.defaults("fluid.tests.undefinedMergeBase", {
gradeNames: "fluid.component",
option6: "OPTION6"
});
fluid.defaults("fluid.tests.undefinedMergeOver", {
gradeNames: "fluid.tests.undefinedMergeBase",
option6: "@expand:fluid.tests.returnUndefined()"
});
fluid.tests.returnUndefined = function () {};
jqUnit.test("FLUID-6156: Test ignoring of undefined values during merge", function () {
var that = fluid.tests.undefinedMergeOver();
jqUnit.assertEquals("Undefined value should have been ignored", "OPTION6", that.option6);
});
});