| # Tests of Starlark 'int' |
| # option:float |
| |
| 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) |
| # use resolve.AllowBitwise to enable the ops: |
| 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("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") |
| # 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), and right shift (int>>int). |
| # use resolve.AllowBitwise to enable the ops. |
| # 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") |