Keep former non-normative edge case behavior.

- Leave comments about the `{"@id": null}` edge case tests but still
  test with current behavior. Will address the issue later.

Author: davidlehn

CHANGELOG.md

@@ -3,20 +3,6 @@
 ### Changed
 - Change EARL Assertor to Digital Bazaar, Inc.
 - Update eslint dependencies.
-- **BREAKING**: Handle spec edge case where value for `@id` can expand into
-  null. Behavior is changing to *not* output invalid JSON-LD and *potentially*
-  outputing an extra blank node. The input in question is something like
-  `{"@id":"@RESERVED", ...}` where `@RESERVED` will expand into `null`. Rather
-  than outputing invalid `{"@id": null, ...}`, the new behavior will drop
-  `@id`. When going to RDF this can cause slightly different output.
-  Specifically, a `{}` value may exist and create a blank node. Please file an
-  issue if this behavior causes issues. It is expected to be better addressed
-  in a future spec.
-  - Related [issue](https://github.com/w3c/json-ld-api/issues/480).
-  - Normative [toRdf test case](https://w3c.github.io/json-ld-api/tests/toRdf-manifest.html#te122)
-    *that now fails*.
-  - Non-normative [expand test case](https://w3c.github.io/json-ld-api/tests/expand-manifest.html#t0122)
-    that now fails.
 
 ### Added
 - Support benchmarks in Karma tests.

tests/test-common.js

@@ -62,6 +62,12 @@ const TEST_TYPES = {
       // NOTE: idRegex format:
       //MMM-manifest#tNNN$/,
       idRegex: [
+        // spec issues
+        // Unclear how to handle {"@id": null} edge case
+        // See https://github.com/w3c/json-ld-api/issues/480
+        // non-normative test, also see toRdf-manifest#te122
+        ///expand-manifest#t0122$/,
+
         // misc
         /expand-manifest#tc037$/,
         /expand-manifest#tc038$/,
@@ -187,6 +193,12 @@ const TEST_TYPES = {
       // NOTE: idRegex format:
       //MMM-manifest#tNNN$/,
       idRegex: [
+        // spec issues
+        // Unclear how to handle {"@id": null} edge case
+        // See https://github.com/w3c/json-ld-api/issues/480
+        // normative test, also see expand-manifest#t0122
+        ///toRdf-manifest#te122$/,
+
         // misc
         /toRdf-manifest#tc037$/,
         /toRdf-manifest#tc038$/,