98 lines
2.7 KiB
Python
98 lines
2.7 KiB
Python
from dllist import DoubleLinkedList
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def test_push():
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colors = DoubleLinkedList()
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colors.push("Pthalo Blue")
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assert colors.count() == 1
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colors.push("Ultramarine Blue")
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assert colors.count() == 2
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def test_pop():
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colors = DoubleLinkedList()
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colors.push("Magenta")
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colors.push("Alizarin")
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assert colors.pop() == "Alizarin"
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assert colors.count() == 1
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assert colors.pop() == "Magenta"
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assert colors.count() == 0
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assert colors.pop() is None
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def test_get():
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colors = DoubleLinkedList()
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colors.push("Vermillion")
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assert colors.get(0) == "Vermillion"
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colors.push("Sap Green")
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assert colors.get(0) == "Vermillion"
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assert colors.get(1) == "Sap Green"
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colors.push("Cadmium Yellow Light")
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assert colors.get(0) == "Vermillion"
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assert colors.get(1) == "Sap Green"
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assert colors.get(2) == "Cadmium Yellow Light"
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assert colors.pop() == "Cadmium Yellow Light"
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assert colors.get(0) == "Vermillion"
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assert colors.get(1) == "Sap Green"
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assert colors.get(2) is None
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colors.pop()
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assert colors.get(0) == "Vermillion"
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colors.pop()
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assert colors.get(0) is None
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def test_unshift():
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colors = DoubleLinkedList()
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colors.push("Viridian")
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colors.push("Sap Green")
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colors.push("Van Dyke")
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assert colors.unshift() == "Viridian"
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assert colors.unshift() == "Sap Green"
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assert colors.unshift() == "Van Dyke"
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assert colors.unshift() is None
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assert colors.count() == 0
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def test_shift():
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colors = DoubleLinkedList()
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colors.shift("Cadmium Orange")
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assert colors.count() == 1
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colors.shift("Carbazole Violet")
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assert colors.count() == 2
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assert colors.pop() == "Cadmium Orange"
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assert colors.count() == 1
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assert colors.pop() == "Carbazole Violet"
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assert colors.count() == 0
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def test_first():
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colors = DoubleLinkedList()
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colors.push("Cadmium Red Light")
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assert colors.first() == "Cadmium Red Light"
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colors.push("Hansa Yellow")
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assert colors.first() == "Cadmium Red Light"
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colors.shift("Pthalo Green")
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assert colors.first() == "Pthalo Green"
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def test_last():
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colors = DoubleLinkedList()
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colors.push("Cadmium Red Light")
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assert colors.last() == "Cadmium Red Light"
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colors.push("Hansa Yellow")
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assert colors.last() == "Hansa Yellow"
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colors.shift("Pthalo Green")
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assert colors.last() == "Hansa Yellow"
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def test_remove():
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colors = DoubleLinkedList()
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colors.push("Cobalt")
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colors.push("Zinc White")
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colors.push("Nickle Yellow")
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colors.push("Perinone")
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assert colors.remove("Cobalt") == 0
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assert colors.remove("Perinone") == 2
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assert colors.remove("Nickle Yellow") == 1
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assert colors.remove("Zinc White") == 0
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