public void CanJoinTwoTables()
{
HashTable test = new HashTable(5);
test.AddNode("A", "American Crow");
test.AddNode("B", "Blue Jay");
test.AddNode("C", "Columbidae");
test.AddNode("D", "Dark-eyed Junco");
test.AddNode("E", "European Starling");
HashTable test2 = new HashTable(3);
test2.AddNode("A", "American Robin");
test2.AddNode("C", "Chipping Sparrow");
test2.AddNode("M", "Mallard");
HashTable result = Program.LeftJoin(test, test2);
HashTable expected = new HashTable(5);
expected.AddNode("A", "American Crow, American Robin");
expected.AddNode("B", "Blue Jay, null");
expected.AddNode("C", "Columbidae, Chipping Sparrow");
expected.AddNode("D", "Dark-eyed Junco, null");
expected.AddNode("E", "European Starling, null");
Assert.Equal(expected.HashNode[0].Value, result.HashNode[0].Value);
Assert.Equal(expected.HashNode[1].Value, result.HashNode[1].Value);
Assert.Equal(expected.HashNode[2].Value, result.HashNode[2].Value);
Assert.Equal(expected.HashNode[3].Value, result.HashNode[3].Value);
Assert.Equal(expected.HashNode[4].Value, result.HashNode[4].Value);
}
public void CanCheckIfAHashTableHasEmptyRow()
{
HashTable test = new HashTable(5);
test.AddNode("A", "American Crow");
test.AddNode("B", "Blue Jay");
test.AddNode("C", "Columbidae");
Assert.False(Program.PrintTable(test));
}
public void CanAddNodesIntoHashTable()
{
HashTable test = new HashTable(5);
test.AddNode("A", "American Crow");
test.AddNode("B", "Blue Jay");
test.AddNode("C", "Columbidae");
test.AddNode("D", "Dark-eyed Junco");
test.AddNode("E", "European Starling");
Assert.Equal(0, test.Contains("A"));
Assert.Equal(1, test.Contains("B"));
Assert.Equal(2, test.Contains("C"));
Assert.Equal(3, test.Contains("D"));
Assert.Equal(4, test.Contains("E"));
}
public void CanGetNodesValue()
{
HashTable test = new HashTable(5);
test.AddNode("A", "American Crow");
test.AddNode("B", "Blue Jay");
test.AddNode("C", "Columbidae");
test.AddNode("D", "Dark-eyed Junco");
test.AddNode("E", "European Starling");
Assert.Equal("American Crow", test.HashNode[0].Value);
Assert.Equal("Blue Jay", test.HashNode[1].Value);
Assert.Equal("Columbidae", test.HashNode[2].Value);
Assert.Equal("Dark-eyed Junco", test.HashNode[3].Value);
Assert.Equal("European Starling", test.HashNode[4].Value);
}