blob: f0e2cde38f9d6cb3ec9d4c7b2407756da2518c3c [file] [log] [blame]
 # Tests of Starlark 'int' load("assert.star", "assert") # basic arithmetic assert.eq(0 - 1, -1) assert.eq(0 + 1, +1) assert.eq(1 + 1, 2) assert.eq(5 + 7, 12) assert.eq(5 * 7, 35) assert.eq(5 - 7, -2) # int boundaries maxint64 = (1 << 63) - 1 minint64 = -1 << 63 maxint32 = (1 << 31) - 1 minint32 = -1 << 31 assert.eq(maxint64, 9223372036854775807) assert.eq(minint64, -9223372036854775808) assert.eq(maxint32, 2147483647) assert.eq(minint32, -2147483648) # truth def truth(): assert.true(not 0) for m in [1, maxint32]: # Test small/big ranges assert.true(123 * m) assert.true(-1 * m) truth() # floored division # (For real division, see float.star.) def division(): for m in [1, maxint32]: # Test small/big ranges assert.eq((100 * m) // (7 * m), 14) assert.eq((100 * m) // (-7 * m), -15) assert.eq((-100 * m) // (7 * m), -15) # NB: different from Go/Java assert.eq((-100 * m) // (-7 * m), 14) # NB: different from Go/Java assert.eq((98 * m) // (7 * m), 14) assert.eq((98 * m) // (-7 * m), -14) assert.eq((-98 * m) // (7 * m), -14) assert.eq((-98 * m) // (-7 * m), 14) division() # remainder def remainder(): for m in [1, maxint32]: # Test small/big ranges assert.eq((100 * m) % (7 * m), 2 * m) assert.eq((100 * m) % (-7 * m), -5 * m) # NB: different from Go/Java assert.eq((-100 * m) % (7 * m), 5 * m) # NB: different from Go/Java assert.eq((-100 * m) % (-7 * m), -2 * m) assert.eq((98 * m) % (7 * m), 0) assert.eq((98 * m) % (-7 * m), 0) assert.eq((-98 * m) % (7 * m), 0) assert.eq((-98 * m) % (-7 * m), 0) remainder() # compound assignment def compound(): x = 1 x += 1 assert.eq(x, 2) x -= 3 assert.eq(x, -1) x *= 39 assert.eq(x, -39) x //= 4 assert.eq(x, -10) x /= -2 assert.eq(x, 5) x %= 3 assert.eq(x, 2) x = 2 x &= 1 assert.eq(x, 0) x |= 2 assert.eq(x, 2) x ^= 3 assert.eq(x, 1) x <<= 2 assert.eq(x, 4) x >>= 2 assert.eq(x, 1) compound() # int conversion # See float.star for float-to-int conversions. # We follow Python 3 here, but I can't see the method in its madness. # int from bool/int/float assert.fails(int, "missing argument") # int() assert.eq(int(False), 0) assert.eq(int(True), 1) assert.eq(int(3), 3) assert.eq(int(3.1), 3) assert.fails(lambda: int(3, base = 10), "non-string with explicit base") assert.fails(lambda: int(True, 10), "non-string with explicit base") # int from string, base implicitly 10 assert.eq(int("100000000000000000000"), 10000000000 * 10000000000) assert.eq(int("-100000000000000000000"), -10000000000 * 10000000000) assert.eq(int("123"), 123) assert.eq(int("-123"), -123) assert.eq(int("0123"), 123) # not octal assert.eq(int("-0123"), -123) assert.fails(lambda: int("0x12"), "invalid literal with base 10") assert.fails(lambda: int("-0x12"), "invalid literal with base 10") assert.fails(lambda: int("0o123"), "invalid literal.*base 10") assert.fails(lambda: int("-0o123"), "invalid literal.*base 10") # int from string, explicit base assert.eq(int("0"), 0) assert.eq(int("00"), 0) assert.eq(int("0", base = 10), 0) assert.eq(int("00", base = 10), 0) assert.eq(int("0", base = 8), 0) assert.eq(int("00", base = 8), 0) assert.eq(int("-0"), 0) assert.eq(int("-00"), 0) assert.eq(int("-0", base = 10), 0) assert.eq(int("-00", base = 10), 0) assert.eq(int("-0", base = 8), 0) assert.eq(int("-00", base = 8), 0) assert.eq(int("+0"), 0) assert.eq(int("+00"), 0) assert.eq(int("+0", base = 10), 0) assert.eq(int("+00", base = 10), 0) assert.eq(int("+0", base = 8), 0) assert.eq(int("+00", base = 8), 0) assert.eq(int("11", base = 9), 10) assert.eq(int("-11", base = 9), -10) assert.eq(int("10011", base = 2), 19) assert.eq(int("-10011", base = 2), -19) assert.eq(int("123", 8), 83) assert.eq(int("-123", 8), -83) assert.eq(int("0123", 8), 83) # redundant zeros permitted assert.eq(int("-0123", 8), -83) assert.eq(int("00123", 8), 83) assert.eq(int("-00123", 8), -83) assert.eq(int("0o123", 8), 83) assert.eq(int("-0o123", 8), -83) assert.eq(int("123", 7), 66) # 1*7*7 + 2*7 + 3 assert.eq(int("-123", 7), -66) assert.eq(int("12", 16), 18) assert.eq(int("-12", 16), -18) assert.eq(int("0x12", 16), 18) assert.eq(int("-0x12", 16), -18) assert.eq(0x1000000000000001 * 0x1000000000000001, 0x1000000000000002000000000000001) assert.eq(int("1010", 2), 10) assert.eq(int("111111101", 2), 509) assert.eq(int("0b0101", 0), 5) assert.eq(int("0b0101", 2), 5) # prefix is redundant with explicit base assert.eq(int("0b00000", 0), 0) assert.eq(1111111111111111 * 1111111111111111, 1234567901234567654320987654321) assert.fails(lambda: int("0x123", 8), "invalid literal.*base 8") assert.fails(lambda: int("-0x123", 8), "invalid literal.*base 8") assert.fails(lambda: int("0o123", 16), "invalid literal.*base 16") assert.fails(lambda: int("-0o123", 16), "invalid literal.*base 16") assert.fails(lambda: int("0x110", 2), "invalid literal.*base 2") # Base prefix is honored only if base=0, or if the prefix matches the explicit base. # See https://github.com/google/starlark-go/issues/337 assert.fails(lambda: int("0b0"), "invalid literal.*base 10") assert.eq(int("0b0", 0), 0) assert.eq(int("0b0", 2), 0) assert.eq(int("0b0", 16), 0xb0) assert.eq(int("0x0b0", 16), 0xb0) assert.eq(int("0x0b0", 0), 0xb0) assert.eq(int("0x0b0101", 16), 0x0b0101) # int from string, auto detect base assert.eq(int("123", 0), 123) assert.eq(int("+123", 0), +123) assert.eq(int("-123", 0), -123) assert.eq(int("0x12", 0), 18) assert.eq(int("+0x12", 0), +18) assert.eq(int("-0x12", 0), -18) assert.eq(int("0o123", 0), 83) assert.eq(int("+0o123", 0), +83) assert.eq(int("-0o123", 0), -83) assert.fails(lambda: int("0123", 0), "invalid literal.*base 0") # valid in Python 2.7 assert.fails(lambda: int("-0123", 0), "invalid literal.*base 0") # github.com/google/starlark-go/issues/108 assert.fails(lambda: int("0Oxa", 8), "invalid literal with base 8: 0Oxa") # follow-on bugs to issue 108 assert.fails(lambda: int("--4"), "invalid literal with base 10: --4") assert.fails(lambda: int("++4"), "invalid literal with base 10: \\+\\+4") assert.fails(lambda: int("+-4"), "invalid literal with base 10: \\+-4") assert.fails(lambda: int("0x-4", 16), "invalid literal with base 16: 0x-4") # bitwise union (int|int), intersection (int&int), XOR (int^int), unary not (~int), # left shift (int<>int). # TODO(adonovan): this is not yet in the Starlark spec, # but there is consensus that it should be. assert.eq(1 | 2, 3) assert.eq(3 | 6, 7) assert.eq((1 | 2) & (2 | 4), 2) assert.eq(1 ^ 2, 3) assert.eq(2 ^ 2, 0) assert.eq(1 | 0 ^ 1, 1) # check | and ^ operators precedence assert.eq(~1, -2) assert.eq(~(-2), 1) assert.eq(~0, -1) assert.eq(1 << 2, 4) assert.eq(2 >> 1, 1) assert.fails(lambda: 2 << -1, "negative shift count") assert.fails(lambda: 1 << 512, "shift count too large") # comparisons # TODO(adonovan): test: < > == != etc def comparisons(): for m in [1, maxint32 / 2, maxint32]: # Test small/big ranges assert.lt(-2 * m, -1 * m) assert.lt(-1 * m, 0 * m) assert.lt(0 * m, 1 * m) assert.lt(1 * m, 2 * m) assert.true(2 * m >= 2 * m) assert.true(2 * m > 1 * m) assert.true(1 * m >= 1 * m) assert.true(1 * m > 0 * m) assert.true(0 * m >= 0 * m) assert.true(0 * m > -1 * m) assert.true(-1 * m >= -1 * m) assert.true(-1 * m > -2 * m) comparisons() # precision assert.eq(str(maxint64), "9223372036854775807") assert.eq(str(maxint64 + 1), "9223372036854775808") assert.eq(str(minint64), "-9223372036854775808") assert.eq(str(minint64 - 1), "-9223372036854775809") assert.eq(str(minint64 * minint64), "85070591730234615865843651857942052864") assert.eq(str(maxint32 + 1), "2147483648") assert.eq(str(minint32 - 1), "-2147483649") assert.eq(str(minint32 * minint32), "4611686018427387904") assert.eq(str(minint32 | maxint32), "-1") assert.eq(str(minint32 & minint32), "-2147483648") assert.eq(str(minint32 ^ maxint32), "-1") assert.eq(str(minint32 // -1), "2147483648") # string formatting assert.eq("%o %x %d" % (0o755, 0xDEADBEEF, 42), "755 deadbeef 42") nums = [-95, -1, 0, +1, +95] assert.eq(" ".join(["%o" % x for x in nums]), "-137 -1 0 1 137") assert.eq(" ".join(["%d" % x for x in nums]), "-95 -1 0 1 95") assert.eq(" ".join(["%i" % x for x in nums]), "-95 -1 0 1 95") assert.eq(" ".join(["%x" % x for x in nums]), "-5f -1 0 1 5f") assert.eq(" ".join(["%X" % x for x in nums]), "-5F -1 0 1 5F") assert.eq("%o %x %d" % (123, 123, 123), "173 7b 123") assert.eq("%o %x %d" % (123.1, 123.1, 123.1), "173 7b 123") # non-int operands are acceptable assert.fails(lambda: "%d" % True, "cannot convert bool to int")