100             CollectionAssert.AreEqual(new[] { "a", "c", "d" }, map.Keys);  in AddPreservesInsertionOrder()
179             CollectionAssert.AreEqual(new[] { "before", "x", "a", "after" }, map2.Keys);  in Add_Dictionary()
332             // Surprising, but IDictionary.Contains is only about keys.  in IDictionary_Contains()
380             CollectionAssert.AreEqual(new[] { "x" }, dictionary.Keys);  in IDictionary_Keys()
433             var keys = map.Keys;  in KeysReturnsLiveView()
434             CollectionAssert.AreEqual(new string[0], keys);  in KeysReturnsLiveView()
437             CollectionAssert.AreEqual(new[] { "foo", "x" }, keys);  in KeysReturnsLiveView()
451         // Just test keys - we know the implementation is the same for values
456             var keys = map.Keys;  in ViewsAreReadOnly()
457             Assert.IsTrue(keys.IsReadOnly);  in ViewsAreReadOnly()
458             Assert.Throws<NotSupportedException>(() => keys.Clear());  in ViewsAreReadOnly()
459             Assert.Throws<NotSupportedException>(() => keys.Remove("a"));  in ViewsAreReadOnly()
460             Assert.Throws<NotSupportedException>(() => keys.Add("a"));  in ViewsAreReadOnly()
463         // Just test keys - we know the implementation is the same for values
468             var keys = map.Keys;  in ViewCopyTo()
470             Assert.Throws<ArgumentException>(() => keys.CopyTo(array, 3));  in ViewCopyTo()
471             Assert.Throws<ArgumentOutOfRangeException>(() => keys.CopyTo(array, -1));  in ViewCopyTo()
472             keys.CopyTo(array, 1);  in ViewCopyTo()
476         // Just test keys - we know the implementation is the same for values
481             ICollection keys = map.Keys;  in NonGenericViewCopyTo()
484             Assert.Throws<ArgumentException>(() => keys.CopyTo(array, 3));  in NonGenericViewCopyTo()
485             Assert.Throws<ArgumentOutOfRangeException>(() => keys.CopyTo(array, -1));  in NonGenericViewCopyTo()
486             keys.CopyTo(array, 1);  in NonGenericViewCopyTo()
494             var keys = map.Keys;  in KeysContains()
495             Assert.IsTrue(keys.Contains("foo"));  in KeysContains()
496             Assert.IsFalse(keys.Contains("bar")); // It's a value!  in KeysContains()
497             Assert.IsFalse(keys.Contains("1"));  in KeysContains()
498             // Keys can't be null, so we should prevent contains check  in KeysContains()
499             Assert.Throws<ArgumentNullException>(() => keys.Contains(null));  in KeysContains()
506             var keys = map.Keys.ToArray(); // Uses CopyTo internally  in KeysCopyTo()
507             CollectionAssert.AreEquivalent(new[] { "foo", "x" }, keys);  in KeysCopyTo()
571         // This wouldn't usually happen, as protos can't use doubles as map keys,
609             CollectionAssert.AreEquivalent(new[] { "the_key" }, field.Keys);  in AddEntriesFrom_CodedInputStream()
619 ….AreEquivalent(((IDictionary<string, string>)map).Keys, ((IReadOnlyDictionary<string, string>)map)…  in IDictionaryKeys_Equals_IReadOnlyDictionaryKeys()