public void CopyTo(int count, int index)
{
MyNameObjectCollection nameObjectCollection = Helpers.CreateNameObjectCollection(count);
ICollection collection = nameObjectCollection;
string[] copyArray = new string[index + collection.Count + index];
collection.CopyTo(copyArray, index);
for (int i = 0; i < index; i++)
{
Assert.Null(copyArray[i]);
}
for (int i = 0; i < count; i++)
{
Assert.Equal(nameObjectCollection.GetKey(i), copyArray[i + index]);
}
for (int i = index + collection.Count; i < copyArray.Length; i++)
{
Assert.Null(copyArray[i]);
}
// Clearing the nameObjectCollection should not affect the keys copy
int previousCount = copyArray.Length;
nameObjectCollection.Clear();
Assert.Equal(previousCount, copyArray.Length);
}
private static void Keys_CopyTo_Helper(MyNameObjectCollection nameObjectCollection, int index)
{
ICollection keys = nameObjectCollection.Keys;
string[] keysArray = new string[index + keys.Count + index];
keys.CopyTo(keysArray, index);
for (int i = 0; i < index; i++)
{
Assert.Null(keysArray[i]);
}
for (int i = 0; i < keys.Count; i++)
{
Assert.Equal(nameObjectCollection.GetKey(i), keysArray[i + index]);
}
for (int i = index + keys.Count; i < keysArray.Length; i++)
{
Assert.Null(keysArray[i]);
}
// Clearing the nameObjectCollection should not affect the keys copy
int previousCount = keysArray.Length;
nameObjectCollection.Clear();
Assert.Equal(previousCount, keysArray.Length);
}
public void Keys_GetEnumerator_Invalid(int count)
{
MyNameObjectCollection nameObjectCollection = Helpers.CreateNameObjectCollection(count);
NameObjectCollectionBase.KeysCollection keys = nameObjectCollection.Keys;
IEnumerator enumerator = keys.GetEnumerator();
// Has not started enumerating
Assert.Throws <InvalidOperationException>(() => enumerator.Current);
// Has finished enumerating
while (enumerator.MoveNext())
{
;
}
Assert.Throws <InvalidOperationException>(() => enumerator.Current);
// Has reset enumerating
enumerator.Reset();
Assert.Throws <InvalidOperationException>(() => enumerator.Current);
// Modify collection
enumerator.MoveNext();
nameObjectCollection.Add("new-name", new Foo("new-value"));
Assert.Throws <InvalidOperationException>(() => enumerator.MoveNext());
Assert.Throws <InvalidOperationException>(() => enumerator.Reset());
if (count > 0)
{
Assert.NotNull(enumerator.Current);
}
// Modified read only collection still throws
nameObjectCollection.IsReadOnly = true;
Assert.Throws <InvalidOperationException>(() => enumerator.MoveNext());
Assert.Throws <InvalidOperationException>(() => enumerator.Reset());
// Clear collection
nameObjectCollection.IsReadOnly = false;
enumerator = keys.GetEnumerator();
enumerator.MoveNext();
nameObjectCollection.Clear();
Assert.Throws <InvalidOperationException>(() => enumerator.Current);
Assert.Throws <InvalidOperationException>(() => enumerator.MoveNext());
Assert.Throws <InvalidOperationException>(() => enumerator.Reset());
}
public void IsReadOnly_Set()
{
MyNameObjectCollection nameObjectCollection = Helpers.CreateNameObjectCollection(10);
Assert.False(nameObjectCollection.IsReadOnly);
nameObjectCollection.IsReadOnly = true;
Assert.True(nameObjectCollection.IsReadOnly);
Assert.Throws <NotSupportedException>(() => nameObjectCollection.Add("name", null));
Assert.Throws <NotSupportedException>(() => nameObjectCollection["name"] = null);
Assert.Throws <NotSupportedException>(() => nameObjectCollection[0] = null);
Assert.Throws <NotSupportedException>(() => nameObjectCollection.Remove("name"));
Assert.Throws <NotSupportedException>(() => nameObjectCollection.RemoveAt(0));
Assert.Throws <NotSupportedException>(() => nameObjectCollection.Clear());
Assert.Equal("Name_0", nameObjectCollection.GetKey(0));
Assert.Equal(new Foo("Value_0"), nameObjectCollection["Name_0"]);
Assert.Equal(new Foo("Value_0"), nameObjectCollection[0]);
}
public void Test01()
{
MyNameObjectCollection noc = new MyNameObjectCollection();
Array array = null;
ArrayList ArrayValues = new ArrayList();
Random rand = new Random(-55);
int n = 0;
String key1 = "key1";
String key2 = "key2";
Foo val1 = new Foo();
Foo val2 = new Foo();
// [] Copy a collection to middle of target array.
// Set up initial collection
n = rand.Next(10, 1000);
for (int i = 0; i < n; i++)
{
noc.Add("key_" + i.ToString(), new Foo());
}
// Set up initial array
n = noc.Count + rand.Next(20, 100);
array = Array.CreateInstance(typeof(String), n);
ArrayValues.Clear();
for (int i = 0; i < n; i++)
{
String v = "arrayvalue_" + i.ToString();
array.SetValue(v, i);
ArrayValues.Add(v);
}
// Copy the collection
int offset = 10;
((ICollection)noc).CopyTo(array, offset);
for (int i = 0; i < noc.Count; i++)
{
ArrayValues[i + offset] = noc.GetKey(i);
}
// Check array
CheckArray(array, ArrayValues);
// [] Verify copy is distinct from original collection.
// Clear initial collection
noc.Clear();
// Verify copy is not cleared
CheckArray(array, ArrayValues);
// [] Fill whole array (index=0)
// Set up initial collection
noc = new MyNameObjectCollection();
n = rand.Next(10, 1000);
for (int i = 0; i < n; i++)
{
noc.Add("key_" + i.ToString(), new Foo());
}
// Set up initial array
n = noc.Count;
array = Array.CreateInstance(typeof(String), n);
ArrayValues.Clear();
for (int i = 0; i < n; i++)
{
String v = "arrayvalue_" + i.ToString();
array.SetValue(v, i);
ArrayValues.Add(v);
}
// Copy the collection
((ICollection)noc).CopyTo(array, 0);
for (int i = 0; i < noc.Count; i++)
{
ArrayValues[i] = noc.GetKey(i);
}
// Check array
CheckArray(array, ArrayValues);
// [] index = max index in array
// Set up initial collection
noc.Clear();
noc.Add("key1", new Foo());
// Set up initial array
n = noc.Count + rand.Next(1, 100);
array = Array.CreateInstance(typeof(String), n);
ArrayValues.Clear();
for (int i = 0; i < n; i++)
{
String v = "arrayvalue_" + i.ToString();
array.SetValue(v, i);
ArrayValues.Add(v);
}
// Copy the collection
offset = ArrayValues.Count - 1;
((ICollection)noc).CopyTo(array, offset);
ArrayValues[offset] = noc.GetKey(0);
// Retrieve values
CheckArray(array, ArrayValues);
// [] Target array is zero-length.
array = Array.CreateInstance(typeof(String), 0);
noc = new MyNameObjectCollection();
noc.Add(key1, val1);
noc.Add(key2, val2);
Assert.Throws <ArgumentException>(() => { ((ICollection)noc).CopyTo(array, 0); });
// [] Call on an empty collection (to zero-length array).
noc = new MyNameObjectCollection();
array = Array.CreateInstance(typeof(String), 0);
// Copy the collection
((ICollection)noc).CopyTo(array, 0);
// [] Call on an empty collection.
noc = new MyNameObjectCollection();
array = Array.CreateInstance(typeof(String), 16);
// Copy the collection
((ICollection)noc).CopyTo(array, 0);
// Retrieve elements
foreach (String v in array)
{
if (v != null)
{
Assert.False(true, _strErr + "Value is incorrect. array should be null");
}
}
// [] Call with array = null
noc = new MyNameObjectCollection();
Assert.Throws <ArgumentNullException>(() => { ((ICollection)noc).CopyTo(null, 0); });
// [] Target array is multidimensional.
array = new string[20, 2];
noc = new MyNameObjectCollection();
noc.Add(key1, val1);
noc.Add(key2, val2);
Assert.Throws <ArgumentException>(() => { ((ICollection)noc).CopyTo(array, 16); });
// [] Target array is of incompatible type.
array = Array.CreateInstance(typeof(Foo), 10);
noc = new MyNameObjectCollection();
noc.Add(key1, val1);
noc.Add(key2, val2);
Assert.Throws <InvalidCastException>(() => { ((ICollection)noc).CopyTo(array, 1); });
// [] index = array length
n = rand.Next(10, 100);
array = Array.CreateInstance(typeof(String), n);
noc = new MyNameObjectCollection();
noc.Add(key1, val1);
noc.Add(key2, val2);
Assert.Throws <ArgumentException>(() => { ((ICollection)noc).CopyTo(array, n); });
// [] index > array length
n = rand.Next(10, 100);
array = Array.CreateInstance(typeof(String), n);
noc = new MyNameObjectCollection();
noc.Add(key1, val1);
noc.Add(key2, val2);
Assert.Throws <ArgumentException>(() => { ((ICollection)noc).CopyTo(array, n + 1); });
// [] index = Int32.MaxValue
array = Array.CreateInstance(typeof(String), 10);
noc = new MyNameObjectCollection();
noc.Add(key1, val1);
noc.Add(key2, val2);
Assert.Throws <ArgumentException>(() => { ((ICollection)noc).CopyTo(array, Int32.MaxValue); });
// [] index < 0
array = Array.CreateInstance(typeof(String), 10);
noc = new MyNameObjectCollection();
noc.Add(key1, val1);
noc.Add(key2, val2);
Assert.Throws <ArgumentOutOfRangeException>(() => { ((ICollection)noc).CopyTo(array, -1); });
// [] index is valid but collection doesn't fit in available space
noc = new MyNameObjectCollection();
// Set up initial collection
n = rand.Next(10, 1000);
for (int i = 0; i < n; i++)
{
noc.Add("key_" + i.ToString(), new Foo());
}
// Set up initial array
n = noc.Count + 20;
array = Array.CreateInstance(typeof(Foo), n);
Assert.Throws <ArgumentException>(() => { ((ICollection)noc).CopyTo(array, 30); }); // array is only 20 bigger than collection
// [] index is negative
noc = new MyNameObjectCollection();
// Set up initial collection
n = rand.Next(10, 1000);
for (int i = 0; i < n; i++)
{
noc.Add("key_" + i.ToString(), new Foo());
}
// Set up initial array
n = noc.Count + 20;
array = Array.CreateInstance(typeof(Foo), n);
Assert.Throws <ArgumentOutOfRangeException>(() => { ((ICollection)noc).CopyTo(array, -1); });
}
public void Test01()
{
MyNameObjectCollection noc = new MyNameObjectCollection();
IEnumerator en = null;
bool res;
// [] Enumerator for empty collection
// Get enumerator
en = noc.GetEnumerator();
// MoveNext should return false
res = en.MoveNext();
if (res)
{
Assert.False(true, _strErr + "MoveNext returned true");
}
// Attempt to get Current should result in exception
Assert.Throws<InvalidOperationException>(() => { String curr = (String)en.Current; });
// [] Enumerator for non-empty collection
// Add items
for (int i = 0; i < 10; i++)
{
noc.Add("key_" + i.ToString(), new Foo());
}
// Get enumerator
en = noc.GetEnumerator();
// Attempt to get Current should result in exception
Assert.Throws<InvalidOperationException>(() => { String curr = (String)en.Current; });
// Iterate over collection
for (int i = 0; i < noc.Count; i++)
{
// MoveNext should return true
res = en.MoveNext();
if (!res)
{
Assert.False(true, string.Format(_strErr + "#{0}, MoveNext returned false", i));
}
// Check current
String curr = (String)en.Current;
if (noc[curr] == null)
{
Assert.False(true, string.Format(_strErr + "#{0}, Current={1}, key not found in collection", i, curr));
}
// Check current again
String current1 = (String)en.Current;
if (current1 != curr)
{
Assert.False(true, string.Format(_strErr + "#{0}, Value of Current changed! Was {1}, now {2}", i, curr, current1));
}
}
// next MoveNext should bring us outside of the collection, return false
res = en.MoveNext();
if (res)
{
Assert.False(true, _strErr + "MoveNext returned true");
}
// Attempt to get Current should result in exception
Assert.Throws<InvalidOperationException>(() => { String curr = (String)en.Current; });
// Reset
en.Reset();
// Attempt to get Current should result in exception
Assert.Throws<InvalidOperationException>(() => { String curr = (String)en.Current; });
// Modify collection and then try MoveNext, Current, Reset
// new collection
noc = new MyNameObjectCollection();
noc.Add("key1", new Foo());
noc.Add("key2", new Foo());
noc.Add("key3", new Foo());
en = noc.GetEnumerator();
// MoveNext
if (!en.MoveNext())
{
Assert.False(true, _strErr + "MoveNext returned false");
}
// Current
String current = (String)en.Current;
// Modify collection
noc.RemoveAt(0);
if (noc.Count != 2)
{
Assert.False(true, string.Format(_strErr + "Collection Count wrong. Expected {0}, got {1}", 2, noc.Count));
}
// Current should not throw, but no guarantee is made on the return value
string curr1 = (String)en.Current;
// MoveNext should throw exception
Assert.Throws<InvalidOperationException>(() => { en.MoveNext(); });
// Reset should throw exception
Assert.Throws<InvalidOperationException>(() => { en.Reset(); });
// Current should not throw, but no guarantee is made on the return value
curr1 = (String)en.Current;
// MoveNext should still throw exception if collection is ReadOnly
noc.IsReadOnly = true;
Assert.Throws<InvalidOperationException>(() => { en.MoveNext(); });
// Clear collection and then try MoveNext, Current, Reset
// new collection
noc = new MyNameObjectCollection();
noc.Add("key1", new Foo());
noc.Add("key2", new Foo());
noc.Add("key3", new Foo());
en = noc.GetEnumerator();
// MoveNext
if (!en.MoveNext())
{
Assert.False(true, _strErr + "MoveNext returned false");
}
// Current
current = (String)en.Current;
// Modify collection
noc.Clear();
if (noc.Count != 0)
{
Assert.False(true, string.Format(_strErr + "Collection Count wrong. Expected {0}, got {1}", 2, noc.Count));
}
// Current throws. Should it throw here?!
Assert.Throws<InvalidOperationException>(() => { String curr = (String)en.Current; });
// MoveNext should throw exception
Assert.Throws<InvalidOperationException>(() => { en.MoveNext(); });
// Reset should throw exception
Assert.Throws<InvalidOperationException>(() => { en.Reset(); });
}
public void Test01()
{
MyNameObjectCollection noc = new MyNameObjectCollection();
Array array = null;
ArrayList ArrayValues = new ArrayList();
Random rand = new Random(-55);
int n = 0;
String key1 = "key1";
String key2 = "key2";
Foo val1 = new Foo();
Foo val2 = new Foo();
// [] Copy a collection to middle of target array.
// Set up initial collection
n = rand.Next(10, 1000);
for (int i = 0; i < n; i++)
{
noc.Add("key_" + i.ToString(), new Foo());
}
// Set up initial array
n = noc.Count + rand.Next(20, 100);
array = Array.CreateInstance(typeof(String), n);
ArrayValues.Clear();
for (int i = 0; i < n; i++)
{
String v = "arrayvalue_" + i.ToString();
array.SetValue(v, i);
ArrayValues.Add(v);
}
// Copy the collection
int offset = 10;
((ICollection)noc.Keys).CopyTo(array, offset);
for (int i = 0; i < noc.Count; i++)
{
ArrayValues[i + offset] = noc.GetKey(i);
}
// Check array
CheckArray(array, ArrayValues);
// [] Verify copy is distinct from original collection.
// Clear initial collection
noc.Clear();
// Verify copy is not cleared
CheckArray(array, ArrayValues);
// [] Fill whole array (index=0)
// Set up initial collection
noc = new MyNameObjectCollection();
n = rand.Next(10, 1000);
for (int i = 0; i < n; i++)
{
noc.Add("key_" + i.ToString(), new Foo());
}
// Set up initial array
n = noc.Count;
array = Array.CreateInstance(typeof(String), n);
ArrayValues.Clear();
for (int i = 0; i < n; i++)
{
String v = "arrayvalue_" + i.ToString();
array.SetValue(v, i);
ArrayValues.Add(v);
}
// Copy the collection
((ICollection)noc.Keys).CopyTo(array, 0);
for (int i = 0; i < noc.Count; i++)
{
ArrayValues[i] = noc.GetKey(i);
}
// Check array
CheckArray(array, ArrayValues);
// [] index = max index in array
// Set up initial collection
noc.Clear();
noc.Add("key1", new Foo());
// Set up initial array
n = noc.Count + rand.Next(1, 100);
array = Array.CreateInstance(typeof(String), n);
ArrayValues.Clear();
for (int i = 0; i < n; i++)
{
String v = "arrayvalue_" + i.ToString();
array.SetValue(v, i);
ArrayValues.Add(v);
}
// Copy the collection
offset = ArrayValues.Count - 1;
((ICollection)noc.Keys).CopyTo(array, offset);
ArrayValues[offset] = noc.GetKey(0);
// Retrieve values
CheckArray(array, ArrayValues);
// [] Target array is zero-length.
array = Array.CreateInstance(typeof(String), 0);
noc = new MyNameObjectCollection();
noc.Add(key1, val1);
noc.Add(key2, val2);
Assert.Throws<ArgumentException>(() => { ((ICollection)noc.Keys).CopyTo(array, 0); });
// [] Call on an empty collection (to zero-length array).
noc = new MyNameObjectCollection();
array = Array.CreateInstance(typeof(String), 0);
// Copy the collection
((ICollection)noc.Keys).CopyTo(array, 0);
// [] Call on an empty collection.
noc = new MyNameObjectCollection();
array = Array.CreateInstance(typeof(String), 16);
// Copy the collection
((ICollection)noc.Keys).CopyTo(array, 0);
// Retrieve elements
foreach (String v in array)
{
if (v != null)
{
Assert.False(true, _strErr + "Value is incorrect. array should be null");
}
}
// [] Call with array = null
noc = new MyNameObjectCollection();
Assert.Throws<ArgumentNullException>(() => { ((ICollection)noc.Keys).CopyTo(null, 0); });
// [] Target array is multidimensional.
array = new string[20, 2];
noc = new MyNameObjectCollection();
noc.Add(key1, val1);
noc.Add(key2, val2);
Assert.Throws<ArgumentException>(() => { ((ICollection)noc.Keys).CopyTo(array, 16); });
// [] Target array is of incompatible type.
array = Array.CreateInstance(typeof(Foo), 10);
noc = new MyNameObjectCollection();
noc.Add(key1, val1);
noc.Add(key2, val2);
Assert.Throws<InvalidCastException>(() => { ((ICollection)noc.Keys).CopyTo(array, 1); });
// [] index = array length
n = rand.Next(10, 100);
array = Array.CreateInstance(typeof(String), n);
noc = new MyNameObjectCollection();
noc.Add(key1, val1);
noc.Add(key2, val2);
Assert.Throws<ArgumentException>(() => { ((ICollection)noc.Keys).CopyTo(array, n); });
// [] index > array length
n = rand.Next(10, 100);
array = Array.CreateInstance(typeof(String), n);
noc = new MyNameObjectCollection();
noc.Add(key1, val1);
noc.Add(key2, val2);
Assert.Throws<ArgumentException>(() => { ((ICollection)noc.Keys).CopyTo(array, n + 1); });
// [] index = Int32.MaxValue
array = Array.CreateInstance(typeof(String), 10);
noc = new MyNameObjectCollection();
noc.Add(key1, val1);
noc.Add(key2, val2);
Assert.Throws<ArgumentException>(() => { ((ICollection)noc.Keys).CopyTo(array, Int32.MaxValue); });
// [] index < 0
array = Array.CreateInstance(typeof(String), 10);
noc = new MyNameObjectCollection();
noc.Add(key1, val1);
noc.Add(key2, val2);
Assert.Throws<ArgumentOutOfRangeException>(() => { ((ICollection)noc.Keys).CopyTo(array, -1); });
// [] index is valid but collection doesn't fit in available space
noc = new MyNameObjectCollection();
// Set up initial collection
n = rand.Next(10, 1000);
for (int i = 0; i < n; i++)
{
noc.Add("key_" + i.ToString(), new Foo());
}
// Set up initial array
n = noc.Count + 20;
array = Array.CreateInstance(typeof(Foo), n);
Assert.Throws<ArgumentException>(() => { ((ICollection)noc.Keys).CopyTo(array, 30); }); // array is only 20 bigger than collection
// [] index is negative
noc = new MyNameObjectCollection();
// Set up initial collection
n = rand.Next(10, 1000);
for (int i = 0; i < n; i++)
{
noc.Add("key_" + i.ToString(), new Foo());
}
// Set up initial array
n = noc.Count + 20;
array = Array.CreateInstance(typeof(Foo), n);
Assert.Throws<ArgumentOutOfRangeException>(() => { ((ICollection)noc.Keys).CopyTo(array, -1); });
// [] All keys are null
noc = new MyNameObjectCollection();
noc.Add(null, new Foo());
noc.Add(null, new Foo());
noc.Add(null, null);
noc.Add(null, new Foo());
if (noc.Count != 4)
{
Assert.False(true, _strErr + "Elements were not added correctly");
}
array = Array.CreateInstance(typeof(String), 16);
// Copy the collection
((ICollection)noc.Keys).CopyTo(array, 0);
// Retrieve elements
foreach (String v in array)
{
if (v != null)
{
Assert.False(true, _strErr + "Value is incorrect. array should be null");
}
}
}
public void Test01()
{
MyNameObjectCollection noc = new MyNameObjectCollection();
String key = "key1";
Foo value = new Foo();
// [] IsReadOnly is initially false
if (noc.IsReadOnly != false)
{
Assert.False(true, _strErr + "IsReadOnly should be false initially");
}
// [] Set IsReadOnly to true
noc.IsReadOnly = true;
if (noc.IsReadOnly != true)
{
Assert.False(true, _strErr + "IsReadOnly should be true");
}
// Now we are going to verify that methods that change the collection throw an exception
// if IsReadOnly is true.
// [] Set IsReadOnly to false and add an element
noc.IsReadOnly = false;
if (noc.IsReadOnly != false)
{
Assert.False(true, _strErr + "IsReadOnly should be false");
}
noc.Add(key, value);
noc.IsReadOnly = true;
// [] Add fails
Assert.Throws <NotSupportedException>(() => { noc.Add("new key", new Foo()); });
// [] Remove fails
Assert.Throws <NotSupportedException>(() => { noc.Remove(key); });
// [] RemoveAt fails
Assert.Throws <NotSupportedException>(() => { noc.RemoveAt(0); });
// [] Clear fails
Assert.Throws <NotSupportedException>(() => { noc.Clear(); });
// [] Get by key succeeds
if (noc[key] != value)
{
Assert.False(true, string.Format(_strErr + "Wrong value returned. Expected {0}, got {1}", value, noc[key]));
}
// [] Set by key fails
Assert.Throws <NotSupportedException>(() => { noc[key] = new Foo(); });
// [] Get by index succeeds
if (noc[0] != value)
{
Assert.False(true, string.Format(_strErr + "Wrong value returned. Expected {0}, got {1}", value, noc[0]));
}
// [] Set by index fails
Assert.Throws <NotSupportedException>(() => { noc[0] = new Foo(); });
// [] GetKey succeeds
if (noc.GetKey(0) != key)
{
Assert.False(true, string.Format(_strErr + "Wrong value returned. Expected {0}, got {1}", key, noc.GetKey(0)));
}
}
public void Keys_CopyTo(MyNameObjectCollection nameObjectCollection, int index)
{
ICollection keys = nameObjectCollection.Keys;
string[] keysArray = new string[index + keys.Count + index];
keys.CopyTo(keysArray, index);
for (int i = 0; i < index; i++)
{
Assert.Null(keysArray[i]);
}
for (int i = 0; i < keys.Count; i++)
{
Assert.Equal(nameObjectCollection.GetKey(i), keysArray[i + index]);
}
for (int i = index + keys.Count; i < keysArray.Length; i++)
{
Assert.Null(keysArray[i]);
}
// Clearing the nameObjectCollection should not affect the keys copy
int previousCount = keysArray.Length;
nameObjectCollection.Clear();
Assert.Equal(previousCount, keysArray.Length);
}
public void Test01()
{
MyNameObjectCollection noc = new MyNameObjectCollection();
IEnumerator en = null;
bool res;
// [] Enumerator for empty collection
// Get enumerator
en = noc.GetEnumerator();
// MoveNext should return false
res = en.MoveNext();
if (res)
{
Assert.False(true, _strErr + "MoveNext returned true");
}
// Attempt to get Current should result in exception
Assert.Throws <InvalidOperationException>(() => { String curr = (String)en.Current; });
// [] Enumerator for non-empty collection
// Add items
for (int i = 0; i < 10; i++)
{
noc.Add("key_" + i.ToString(), new Foo());
}
// Get enumerator
en = noc.GetEnumerator();
// Attempt to get Current should result in exception
Assert.Throws <InvalidOperationException>(() => { String curr = (String)en.Current; });
// Iterate over collection
for (int i = 0; i < noc.Count; i++)
{
// MoveNext should return true
res = en.MoveNext();
if (!res)
{
Assert.False(true, string.Format(_strErr + "#{0}, MoveNext returned false", i));
}
// Check current
String curr = (String)en.Current;
if (noc[curr] == null)
{
Assert.False(true, string.Format(_strErr + "#{0}, Current={1}, key not found in collection", i, curr));
}
// Check current again
String current1 = (String)en.Current;
if (current1 != curr)
{
Assert.False(true, string.Format(_strErr + "#{0}, Value of Current changed! Was {1}, now {2}", i, curr, current1));
}
}
// next MoveNext should bring us outside of the collection, return false
res = en.MoveNext();
if (res)
{
Assert.False(true, _strErr + "MoveNext returned true");
}
// Attempt to get Current should result in exception
Assert.Throws <InvalidOperationException>(() => { String curr = (String)en.Current; });
// Reset
en.Reset();
// Attempt to get Current should result in exception
Assert.Throws <InvalidOperationException>(() => { String curr = (String)en.Current; });
// Modify collection and then try MoveNext, Current, Reset
// new collection
noc = new MyNameObjectCollection();
noc.Add("key1", new Foo());
noc.Add("key2", new Foo());
noc.Add("key3", new Foo());
en = noc.GetEnumerator();
// MoveNext
if (!en.MoveNext())
{
Assert.False(true, _strErr + "MoveNext returned false");
}
// Current
String current = (String)en.Current;
// Modify collection
noc.RemoveAt(0);
if (noc.Count != 2)
{
Assert.False(true, string.Format(_strErr + "Collection Count wrong. Expected {0}, got {1}", 2, noc.Count));
}
// Current should not throw, but no guarantee is made on the return value
string curr1 = (String)en.Current;
// MoveNext should throw exception
Assert.Throws <InvalidOperationException>(() => { en.MoveNext(); });
// Reset should throw exception
Assert.Throws <InvalidOperationException>(() => { en.Reset(); });
// Current should not throw, but no guarantee is made on the return value
curr1 = (String)en.Current;
// MoveNext should still throw exception if collection is ReadOnly
noc.IsReadOnly = true;
Assert.Throws <InvalidOperationException>(() => { en.MoveNext(); });
// Clear collection and then try MoveNext, Current, Reset
// new collection
noc = new MyNameObjectCollection();
noc.Add("key1", new Foo());
noc.Add("key2", new Foo());
noc.Add("key3", new Foo());
en = noc.GetEnumerator();
// MoveNext
if (!en.MoveNext())
{
Assert.False(true, _strErr + "MoveNext returned false");
}
// Current
current = (String)en.Current;
// Modify collection
noc.Clear();
if (noc.Count != 0)
{
Assert.False(true, string.Format(_strErr + "Collection Count wrong. Expected {0}, got {1}", 2, noc.Count));
}
// Current throws. Should it throw here?!
Assert.Throws <InvalidOperationException>(() => { String curr = (String)en.Current; });
// MoveNext should throw exception
Assert.Throws <InvalidOperationException>(() => { en.MoveNext(); });
// Reset should throw exception
Assert.Throws <InvalidOperationException>(() => { en.Reset(); });
}
public void Test01()
{
MyNameObjectCollection noc = new MyNameObjectCollection();
String key = "key1";
Foo value = new Foo();
// [] IsReadOnly is initially false
if (noc.IsReadOnly != false)
{
Assert.False(true, _strErr + "IsReadOnly should be false initially");
}
// [] Set IsReadOnly to true
noc.IsReadOnly = true;
if (noc.IsReadOnly != true)
{
Assert.False(true, _strErr + "IsReadOnly should be true");
}
// Now we are going to verify that methods that change the collection throw an exception
// if IsReadOnly is true.
// [] Set IsReadOnly to false and add an element
noc.IsReadOnly = false;
if (noc.IsReadOnly != false)
{
Assert.False(true, _strErr + "IsReadOnly should be false");
}
noc.Add(key, value);
noc.IsReadOnly = true;
// [] Add fails
Assert.Throws<NotSupportedException>(() => { noc.Add("new key", new Foo()); });
// [] Remove fails
Assert.Throws<NotSupportedException>(() => { noc.Remove(key); });
// [] RemoveAt fails
Assert.Throws<NotSupportedException>(() => { noc.RemoveAt(0); });
// [] Clear fails
Assert.Throws<NotSupportedException>(() => { noc.Clear(); });
// [] Get by key succeeds
if (noc[key] != value)
{
Assert.False(true, string.Format(_strErr + "Wrong value returned. Expected {0}, got {1}", value, noc[key]));
}
// [] Set by key fails
Assert.Throws<NotSupportedException>(() => { noc[key] = new Foo(); });
// [] Get by index succeeds
if (noc[0] != value)
{
Assert.False(true, string.Format(_strErr + "Wrong value returned. Expected {0}, got {1}", value, noc[0]));
}
// [] Set by index fails
Assert.Throws<NotSupportedException>(() => { noc[0] = new Foo(); });
// [] GetKey succeeds
if (noc.GetKey(0) != key)
{
Assert.False(true, string.Format(_strErr + "Wrong value returned. Expected {0}, got {1}", key, noc.GetKey(0)));
}
}