JS: Add failing test due to overpruning

javascript/ql/test/library-tests/frameworks/data/test.expected

@@ -1,4 +1,5 @@
 consistencyIssue
+| library-tests/frameworks/data/test.js:261 | expected an alert, but found none | NOT OK |  |
 taintFlow
 | paramDecorator.ts:6:54:6:54 | x | paramDecorator.ts:7:10:7:10 | x |
 | test.js:5:30:5:37 | source() | test.js:5:8:5:38 | testlib ... urce()) |

javascript/ql/test/library-tests/frameworks/data/test.js

@@ -272,3 +272,9 @@ class MySubclass2 extends MySubclass {
 sink(new MySubclass2().baseclassSource()); // NOT OK
 
 sink(testlib.parenthesizedPackageName()); // NOT OK
+
+function dangerConstant() {
+  sink("danger-constant".danger); // NOT OK
+  sink("danger-constant".safe); // OK
+  sink("danger-constant"); // OK
+}

javascript/ql/test/library-tests/frameworks/data/test.ql

@@ -2,6 +2,17 @@ import javascript
 import testUtilities.ConsistencyChecking
 import semmle.javascript.frameworks.data.internal.ApiGraphModels as ApiGraphModels
 
+class TypeModelFromCodeQL extends ModelInput::TypeModel {
+  override DataFlow::Node getASource(string type) {
+    type = "danger-constant" and
+    result.getStringValue() = "danger-constant"
+  }
+}
+
+class SourceFromDangerConstant extends ModelInput::SourceModelCsv {
+  override predicate row(string row) { row = "danger-constant;Member[danger];test-source" }
+}
+
 class BasicTaintTracking extends TaintTracking::Configuration {
   BasicTaintTracking() { this = "BasicTaintTracking" }