Port null/NaN validation text from iOS

Author: long1eu

cloud_firestore/cloud_firestore_vm/lib/src/firebase/firestore/core/filter/field_filter.dart

@@ -27,13 +27,13 @@ class FieldFilter extends Filter {
     } else if (value == NullValue.nullValue()) {
       if (operator != FilterOperator.equal) {
         throw ArgumentError(
-            'Invalid Query. You can only perform equality comparisons on null (via whereEqualTo()).');
+            'Invalid Query. Null supports only equality comparisons (via whereEqualTo()).');
       }
       return FieldFilter._(path, operator, value);
     } else if (value == DoubleValue.nan) {
       if (operator != FilterOperator.equal) {
         throw ArgumentError(
-            'Invalid Query. You can only perform equality comparisons on NaN (via whereEqualTo()).');
+            'Invalid Query. NaN supports only equality comparisons (via whereEqualTo()).');
       }
       return FieldFilter._(path, operator, value);
     } else if (operator == FilterOperator.arrayContains) {

cloud_firestore/cloud_firestore_vm/pubspec.yaml

@@ -20,4 +20,4 @@ dev_dependencies:
   moor_ffi: ^0.4.0
   uuid: ^2.0.4
 
-latest_commit: d50472aa4021f37bc2f74755089c9c17c47297e2
+latest_commit: 71adf9a660a14915377f3229eb2c990a5c19e2f1

cloud_firestore/cloud_firestore_vm/test/integration/firebase/firestore/validation_test.dart

@@ -465,27 +465,19 @@ void main() {
 
   test('queriesWithNullOrNaNFiltersOtherThanEqualityFail', () async {
     final CollectionReference collection = await testCollection();
-    await expectError(
-        () => collection.whereGreaterThan('a', null),
-        'Invalid Query. You can only perform equality comparisons on null '
-        '(via whereEqualTo()).');
-    await expectError(
-        () => collection.whereArrayContains('a', null),
-        'Invalid Query. You can only perform equality comparisons on null '
-        '(via whereEqualTo()).');
+    await expectError(() => collection.whereGreaterThan('a', null),
+        'Invalid Query. Null supports only equality comparisons (via whereEqualTo()).');
+    await expectError(() => collection.whereArrayContains('a', null),
+        'Invalid Query. Null supports only equality comparisons (via whereEqualTo()).');
     await expectError(() => collection.whereArrayContainsAny('a', null),
         'Invalid Query. A non-empty array is required for "array_contains_any" filters.');
     await expectError(() => collection.whereIn('a', null),
         'Invalid Query. A non-empty array is required for "in" filters.');
 
-    await expectError(
-        () => collection.whereGreaterThan('a', double.nan),
-        'Invalid Query. You can only perform equality comparisons on NaN '
-        '(via whereEqualTo()).');
-    await expectError(
-        () => collection.whereArrayContains('a', double.nan),
-        'Invalid Query. You can only perform equality comparisons on NaN '
-        '(via whereEqualTo()).');
+    await expectError(() => collection.whereGreaterThan('a', double.nan),
+        'Invalid Query. NaN supports only equality comparisons (via whereEqualTo()).');
+    await expectError(() => collection.whereArrayContains('a', double.nan),
+        'Invalid Query. NaN supports only equality comparisons (via whereEqualTo()).');
   });
 
   test('queriesCannotBeCreatedFromDocumentsMissingSortValues', () async {