179 lines
3.0 KiB
Python
179 lines
3.0 KiB
Python
import pytest
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from babi.buf import Buf
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def test_buf_repr():
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ret = repr(Buf(['a', 'b', 'c']))
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assert ret == "Buf(['a', 'b', 'c'], x=0, y=0, file_y=0)"
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def test_buf_item_retrieval():
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buf = Buf(['a', 'b', 'c'])
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assert buf[1] == 'b'
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assert buf[-1] == 'c'
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with pytest.raises(IndexError):
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buf[3]
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def test_buf_del():
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lst = ['a', 'b', 'c']
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buf = Buf(lst)
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with buf.record() as modifications:
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del buf[1]
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assert lst == ['a', 'c']
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buf.apply(modifications)
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assert lst == ['a', 'b', 'c']
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def test_buf_del_with_negative():
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lst = ['a', 'b', 'c']
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buf = Buf(lst)
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with buf.record() as modifications:
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del buf[-1]
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assert lst == ['a', 'b']
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buf.apply(modifications)
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assert lst == ['a', 'b', 'c']
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def test_buf_insert():
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lst = ['a', 'b', 'c']
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buf = Buf(lst)
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with buf.record() as modifications:
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buf.insert(1, 'q')
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assert lst == ['a', 'q', 'b', 'c']
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buf.apply(modifications)
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assert lst == ['a', 'b', 'c']
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def test_buf_insert_with_negative():
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lst = ['a', 'b', 'c']
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buf = Buf(lst)
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with buf.record() as modifications:
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buf.insert(-1, 'q')
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assert lst == ['a', 'b', 'q', 'c']
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buf.apply(modifications)
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assert lst == ['a', 'b', 'c']
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def test_buf_set_value():
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lst = ['a', 'b', 'c']
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buf = Buf(lst)
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with buf.record() as modifications:
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buf[1] = 'hello'
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assert lst == ['a', 'hello', 'c']
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buf.apply(modifications)
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assert lst == ['a', 'b', 'c']
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def test_buf_set_value_idx_negative():
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lst = ['a', 'b', 'c']
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buf = Buf(lst)
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with buf.record() as modifications:
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buf[-1] = 'hello'
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assert lst == ['a', 'b', 'hello']
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buf.apply(modifications)
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assert lst == ['a', 'b', 'c']
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def test_buf_multiple_modifications():
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lst = ['a', 'b', 'c']
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buf = Buf(lst)
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with buf.record() as modifications:
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buf[1] = 'hello'
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buf.insert(1, 'ohai')
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del buf[0]
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assert lst == ['ohai', 'hello', 'c']
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buf.apply(modifications)
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assert lst == ['a', 'b', 'c']
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def test_buf_iter():
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buf = Buf(['a', 'b', 'c'])
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buf_iter = iter(buf)
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assert next(buf_iter) == 'a'
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assert next(buf_iter) == 'b'
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assert next(buf_iter) == 'c'
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with pytest.raises(StopIteration):
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next(buf_iter)
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def test_buf_append():
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lst = ['a', 'b', 'c']
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buf = Buf(lst)
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with buf.record() as modifications:
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buf.append('q')
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assert lst == ['a', 'b', 'c', 'q']
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buf.apply(modifications)
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assert lst == ['a', 'b', 'c']
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def test_buf_pop_default():
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lst = ['a', 'b', 'c']
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buf = Buf(lst)
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with buf.record() as modifications:
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buf.pop()
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assert lst == ['a', 'b']
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buf.apply(modifications)
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assert lst == ['a', 'b', 'c']
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def test_buf_pop_idx():
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lst = ['a', 'b', 'c']
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buf = Buf(lst)
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with buf.record() as modifications:
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buf.pop(1)
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assert lst == ['a', 'c']
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buf.apply(modifications)
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assert lst == ['a', 'b', 'c']
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