public void Will_return_list_of_length_zero_if_there_are_no_differences()
{
var differ = new TestableDiffer();
var res = differ.CreateCharacterDiffs("abc defg", "abc defg", false);
Assert.NotNull(res);
Assert.Equal(0, res.DiffBlocks.Count);
}
public void Will_throw_if_newText_is_null()
{
var differ = new TestableDiffer();
var ex = Record.Exception(() => differ.CreateCharacterDiffs("someString", null, false)) as ArgumentNullException;
Assert.NotNull(ex);
Assert.Equal("newText", ex.ParamName);
}
public void Will_return_correct_one_item_list_when_no_insertions()
{
var differ = new TestableDiffer();
var res = differ.CreateCharacterDiffs("ab ce", "abce", false);
Assert.NotNull(res);
Assert.Equal(1, res.DiffBlocks.Count);
Assert.Equal(2, res.DiffBlocks[0].DeleteStartA);
Assert.Equal(1, res.DiffBlocks[0].DeleteCountA);
Assert.Equal(0, res.DiffBlocks[0].InsertCountB);
}
public void Will_return_correct_one_item_list_for_strings_with_multiple_difference()
{
var differ = new TestableDiffer();
var res = differ.CreateCharacterDiffs("abcd", "abefgh", false);
Assert.NotNull(res);
Assert.Equal(1, res.DiffBlocks.Count);
Assert.Equal(2, res.DiffBlocks[0].DeleteStartA);
Assert.Equal(2, res.DiffBlocks[0].DeleteCountA);
Assert.Equal(2, res.DiffBlocks[0].InsertStartB);
Assert.Equal(4, res.DiffBlocks[0].InsertCountB);
}
public void Will_return_correct_diff_block_when_newText_is_empty_and_oldText_is_non_empty()
{
var differ = new TestableDiffer();
var res = differ.CreateCharacterDiffs("xy w", "", false);
Assert.NotNull(res);
Assert.Equal(1, res.DiffBlocks.Count);
Assert.Equal(0, res.DiffBlocks[0].DeleteStartA);
Assert.Equal(4, res.DiffBlocks[0].DeleteCountA);
Assert.Equal(0, res.DiffBlocks[0].InsertStartB);
Assert.Equal(0, res.DiffBlocks[0].InsertCountB);
}
public void Will_ignore_case_when_ignore_case_is_true()
{
var differ = new TestableDiffer();
var res = differ.CreateCharacterDiffs("zabcd", "XVABEFGH", false, true);
Assert.NotNull(res);
Assert.Equal(2, res.DiffBlocks.Count);
Assert.Equal(0, res.DiffBlocks[0].DeleteStartA);
Assert.Equal(1, res.DiffBlocks[0].DeleteCountA);
Assert.Equal(0, res.DiffBlocks[0].InsertStartB);
Assert.Equal(2, res.DiffBlocks[0].InsertCountB);
Assert.Equal(3, res.DiffBlocks[1].DeleteStartA);
Assert.Equal(2, res.DiffBlocks[1].DeleteCountA);
Assert.Equal(4, res.DiffBlocks[1].InsertStartB);
Assert.Equal(4, res.DiffBlocks[1].InsertCountB);
}