64 lines
1.6 KiB
Python
64 lines
1.6 KiB
Python
import t
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import stdio
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import testcheck
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from linkedlist import GSListNode
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# ============================================================
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# G3: 测试 F-bounded polymorphism
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# class Node(GSListNode[Node]) — 继承泛型基类，特化自身为类型参数
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# 这与 TransPyV 中 class Value(GSListNode[Value]) 是相同的模式
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# ============================================================
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@t.NoVTable
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class Node(GSListNode[Node]):
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value: t.CInt
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def __init__(self):
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self.value = 0
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self.Next = None
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def test_node_create():
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testcheck.section("Test 1: Node(GSListNode[Node]) create")
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n: Node = Node()
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n.value = 42
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testcheck.check(n.value == 42, "Node.value = 42", "expect 42")
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def test_node_next_field():
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testcheck.section("Test 2: Next field from GSListNode[Node]")
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n1: Node = Node()
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n2: Node = Node()
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n1.value = 10
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n2.value = 20
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n1.Next = n2
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next_node: Node = n1.Next
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v: t.CInt = next_node.value
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testcheck.check(v == 20, "n1.Next.value = 20", "expect 20")
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def test_node_chain():
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testcheck.section("Test 3: Node chain traversal")
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a: Node = Node()
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b: Node = Node()
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c: Node = Node()
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a.value = 1
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b.value = 2
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c.value = 3
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a.Next = b
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b.Next = c
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sum: t.CInt = a.value
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p: Node = a.Next
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sum = sum + p.value
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p = p.Next
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sum = sum + p.value
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testcheck.check(sum == 6, "chain sum = 1+2+3 = 6", "expect 6")
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def main() -> t.CInt:
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testcheck.begin("G3: GSListNode inheritance (F-bounded polymorphism)")
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test_node_create()
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test_node_next_field()
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test_node_chain()
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return testcheck.end()
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