123 lines
4.4 KiB
Python
123 lines
4.4 KiB
Python
from stdint import *
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import w32.win32console
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import t, c
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from t import CInt, CExport
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import stdio
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import stdlib
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import string
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import testcheck
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# 副作用函数：将 buf[0] 置为 1，返回 True
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def bump_true(buf: bytes) -> bool:
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buf[0] = 1
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return True
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# 副作用函数：将 buf[0] 置为 1，返回 False
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def bump_false(buf: bytes) -> bool:
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buf[0] = 1
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return False
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def main() -> CInt | CExport:
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w32.win32console.SetConsoleCP(65001)
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w32.win32console.SetConsoleOutputCP(65001)
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testcheck.begin("if 短路机制测试")
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buf: bytes = stdlib.malloc(1)
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# === Test 1: False and bump_true() - bump 不应被调用 ===
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testcheck.section("Test 1: False and bump_true()")
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buf[0] = 0
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r1: bool = False and bump_true(buf)
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testcheck.check(buf[0] == 0, "and short-circuit OK (bump not called)", "and short-circuit FAILED (bump called)")
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# === Test 2: True or bump_true() - bump 不应被调用 ===
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testcheck.section("Test 2: True or bump_true()")
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buf[0] = 0
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r2: bool = True or bump_true(buf)
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testcheck.check(buf[0] == 0, "or short-circuit OK (bump not called)", "or short-circuit FAILED (bump called)")
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# === Test 3: True and bump_true() - bump 应被调用 ===
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testcheck.section("Test 3: True and bump_true()")
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buf[0] = 0
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r3: bool = True and bump_true(buf)
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testcheck.check(buf[0] == 1, "and eval OK (bump called)", "and eval FAILED (bump not called)")
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# === Test 4: False or bump_true() - bump 应被调用 ===
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testcheck.section("Test 4: False or bump_true()")
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buf[0] = 0
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r4: bool = False or bump_true(buf)
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testcheck.check(buf[0] == 1, "or eval OK (bump called)", "or eval FAILED (bump not called)")
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# === Test 5: if 语句中的短路 ===
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testcheck.section("Test 5: if 语句中的短路")
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buf[0] = 0
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if False and bump_true(buf):
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testcheck.check(False, "should not enter if", "if False and entered")
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testcheck.check(buf[0] == 0, "if and short-circuit OK", "if and short-circuit FAILED")
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buf[0] = 0
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if True or bump_true(buf):
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testcheck.check(True, "if True or entered OK", "if True or not entered")
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else:
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testcheck.check(False, "should enter if", "if True or else")
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testcheck.check(buf[0] == 0, "if or short-circuit OK", "if or short-circuit FAILED")
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# === Test 6: 嵌套短路 ===
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testcheck.section("Test 6: 嵌套短路")
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buf[0] = 0
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r6: bool = False and (True or bump_true(buf))
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testcheck.check(buf[0] == 0, "nested and short-circuit OK", "nested and short-circuit FAILED")
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buf[0] = 0
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r7: bool = True or (False and bump_true(buf))
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testcheck.check(buf[0] == 0, "nested or short-circuit OK", "nested or short-circuit FAILED")
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# === Test 7: not 与短路 ===
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testcheck.section("Test 7: not 与短路")
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buf[0] = 0
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r8: bool = not False and bump_true(buf)
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testcheck.check(buf[0] == 1, "not and eval OK (bump called)", "not and eval FAILED (bump not called)")
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buf[0] = 0
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r9: bool = not True or bump_true(buf)
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testcheck.check(buf[0] == 1, "not or eval OK (bump called)", "not or eval FAILED (bump not called)")
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# === Test 8: and 链中第一个为 False，后续不评估 ===
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testcheck.section("Test 8: and 链短路")
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buf[0] = 0
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r10: bool = False and bump_true(buf) and bump_true(buf)
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testcheck.check(buf[0] == 0, "and chain short-circuit OK", "and chain short-circuit FAILED")
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# === Test 9: or 链中第一个为 True，后续不评估 ===
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testcheck.section("Test 9: or 链短路")
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buf[0] = 0
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r11: bool = True or bump_true(buf) or bump_true(buf)
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testcheck.check(buf[0] == 0, "or chain short-circuit OK", "or chain short-circuit FAILED")
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# === Test 10: and 返回值正确性 ===
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testcheck.section("Test 10: and 返回值正确性")
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buf[0] = 0
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r12: bool = True and bump_true(buf)
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testcheck.check(r12, "and return True OK", "and return True FAILED")
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buf[0] = 0
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r13: bool = True and bump_false(buf)
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testcheck.check(not r13, "and return False OK", "and return False FAILED")
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# === Test 11: or 返回值正确性 ===
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testcheck.section("Test 11: or 返回值正确性")
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buf[0] = 0
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r14: bool = False or bump_true(buf)
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testcheck.check(r14, "or return True OK", "or return True FAILED")
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buf[0] = 0
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r15: bool = False or bump_false(buf)
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testcheck.check(not r15, "or return False OK", "or return False FAILED")
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stdlib.free(buf)
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return testcheck.end()
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