|
public static PerformActionOnAllHashtableWrappers ( Hashtable hashtable, Action |
||
| hashtable | Hashtable | |
| action | Action |
|
| return | void | |
public void ContainsValue()
{
Hashtable hash1 = Helpers.CreateStringHashtable(100);
Helpers.PerformActionOnAllHashtableWrappers(hash1, hash2 =>
{
for (int i = 0; i < hash2.Count; i++)
{
string value = "Value_" + i;
Assert.True(hash2.ContainsValue(value));
}
Assert.False(hash2.ContainsValue("Non Existent Value"));
Assert.False(hash2.ContainsValue(101));
Assert.False(hash2.ContainsValue(null));
hash2.Add("Key_101", null);
Assert.True(hash2.ContainsValue(null));
string removedKey = "Key_1";
string removedValue = "Value_1";
hash2.Remove(removedKey);
Assert.False(hash2.ContainsValue(removedValue));
});
}
public void ContainsKey()
{
Hashtable hash1 = Helpers.CreateStringHashtable(100);
Helpers.PerformActionOnAllHashtableWrappers(hash1, hash2 =>
{
for (int i = 0; i < hash2.Count; i++)
{
string key = "Key_" + i;
Assert.True(hash2.ContainsKey(key));
Assert.True(hash2.Contains(key));
}
Assert.False(hash2.ContainsKey("Non Existent Key"));
Assert.False(hash2.Contains("Non Existent Key"));
Assert.False(hash2.ContainsKey(101));
Assert.False(hash2.Contains("Non Existent Key"));
string removedKey = "Key_1";
hash2.Remove(removedKey);
Assert.False(hash2.ContainsKey(removedKey));
Assert.False(hash2.Contains(removedKey));
});
}
public void ContainsKey_NullKey_ThrowsArgumentNullException()
{
var hash1 = new Hashtable();
Helpers.PerformActionOnAllHashtableWrappers(hash1, hash2 =>
{
AssertExtensions.Throws <ArgumentNullException>("key", () => hash2.ContainsKey(null)); // Key is null
AssertExtensions.Throws <ArgumentNullException>("key", () => hash2.Contains(null)); // Key is null
});
}
public void Add_ReferenceType()
{
var hash1 = new Hashtable();
Helpers.PerformActionOnAllHashtableWrappers(hash1, hash2 =>
{
// Value is a reference
var foo = new Foo();
hash2.Add("Key", foo);
Assert.Equal("Hello World", ((Foo)hash2["Key"]).StringValue);
// Changing original object should change the object stored in the Hashtable
foo.StringValue = "Goodbye";
Assert.Equal("Goodbye", ((Foo)hash2["Key"]).StringValue);
});
}
public void ContainsValue_EqualObjects()
{
var hash1 = new Hashtable();
Helpers.PerformActionOnAllHashtableWrappers(hash1, hash2 =>
{
var foo1 = new Foo()
{
StringValue = "Goodbye"
};
var foo2 = new Foo()
{
StringValue = "Goodbye"
};
hash2.Add(101, foo1);
Assert.True(hash2.ContainsValue(foo2));
});
}
public void ContainsKey_EqualObjects()
{
var hash1 = new Hashtable();
Helpers.PerformActionOnAllHashtableWrappers(hash1, hash2 =>
{
var foo1 = new Foo()
{
StringValue = "Goodbye"
};
var foo2 = new Foo()
{
StringValue = "Goodbye"
};
hash2.Add(foo1, 101);
Assert.True(hash2.ContainsKey(foo2));
Assert.True(hash2.Contains(foo2));
int i1 = 0x10;
int i2 = 0x100;
long l1 = (((long)i1) << 32) + i2; // Create two longs with same hashcode
long l2 = (((long)i2) << 32) + i1;
hash2.Add(l1, 101);
hash2.Add(l2, 101); // This will cause collision bit of the first entry to be set
Assert.True(hash2.ContainsKey(l1));
Assert.True(hash2.Contains(l1));
hash2.Remove(l1); // Remove the first item
Assert.False(hash2.ContainsKey(l1));
Assert.False(hash2.Contains(l1));
Assert.True(hash2.ContainsKey(l2));
Assert.True(hash2.Contains(l2));
});
}
public void Clone(int count)
{
Hashtable hash1 = Helpers.CreateStringHashtable(count);
Helpers.PerformActionOnAllHashtableWrappers(hash1, hash2 =>
{
Hashtable clone = (Hashtable)hash2.Clone();
Assert.Equal(hash2.Count, clone.Count);
Assert.Equal(hash2.IsSynchronized, clone.IsSynchronized);
Assert.Equal(hash2.IsFixedSize, clone.IsFixedSize);
Assert.Equal(hash2.IsReadOnly, clone.IsReadOnly);
for (int i = 0; i < clone.Count; i++)
{
string key = "Key_" + i;
string value = "Value_" + i;
Assert.True(clone.ContainsKey(key));
Assert.True(clone.ContainsValue(value));
Assert.Equal(value, clone[key]);
}
});
}
