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Test cases for L{twisted.names.rfc1982}.
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Tests for L{SerialNumber}.
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L{SerialNumber.serialBits} has default value 32.
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L{SerialNumber.__init__} accepts a C{serialBits} argument whose value is
assigned to L{SerialNumber.serialBits}.
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L{SerialNumber.__repr__} returns a string containing number and
serialBits.
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r r r � test_repr# s �zSerialNumberTests.test_reprc C s | � ttd��d� dS )zg
L{SerialNumber.__str__} returns a string representation of the current
value.
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r r r �test_str- � zSerialNumberTests.test_strc C s | � ttd��d� dS )zi
L{SerialNumber.__int__} returns an integer representation of the current
value.
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L{SerialNumber.__hash__} allows L{SerialNumber} instances to be hashed
for use as dictionary keys.
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L{SerialNumber._convertOther} raises L{TypeError} if the other
SerialNumber instance has a different C{serialBits} value.
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L{SerialNumber.__eq__} provides rich equality comparison.
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== comparison of L{SerialNumber} with a non-L{SerialNumber} instance
returns L{NotImplemented}.
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r r r �test_eqForeignTypeS � z$SerialNumberTests.test_eqForeignTypec C s. | � td�td�k� | �td�td�� dS )zK
L{SerialNumber.__ne__} provides rich equality comparison.
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!= comparison of L{SerialNumber} with a non-L{SerialNumber} instance
returns L{NotImplemented}.
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L{SerialNumber.__le__} provides rich <= comparison.
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<= comparison of L{SerialNumber} with a non-L{SerialNumber} instance
raises L{TypeError}.
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L{SerialNumber.__ge__} provides rich >= comparison.
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>= comparison of L{SerialNumber} with a non-L{SerialNumber} instance
raises L{TypeError}.
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r r r �test_geForeignType rC z$SerialNumberTests.test_geForeignTypec C s | � td�td�k � dS )zD
L{SerialNumber.__lt__} provides rich < comparison.
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< comparison of L{SerialNumber} with a non-L{SerialNumber} instance
raises L{TypeError}.
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r r r �test_ltForeignType� rC z$SerialNumberTests.test_ltForeignTypec C s | � td�td�k� dS )zD
L{SerialNumber.__gt__} provides rich > comparison.
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> comparison of L{SerialNumber} with a non-L{SerialNumber} instance
raises L{TypeError}.
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r r r �test_gtForeignType� rC z$SerialNumberTests.test_gtForeignTypec C s | � td�td� td�� dS )zX
L{SerialNumber.__add__} allows L{SerialNumber} instances to be summed.
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Addition of L{SerialNumber} with a non-L{SerialNumber} instance raises
L{TypeError}.
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r r r �test_addForeignType� rC z%SerialNumberTests.test_addForeignTypec s" t d�j� | �t� fdd�� dS )zp
L{SerialNumber} cannot be added with other SerialNumber values larger
than C{_maxAdd}.
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L{SerialNumber.__add__} returns a wrapped value when s1 plus the s2
would result in a value greater than the C{maxVal}.
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L{SerialNumber.fromRFC4034DateString} accepts a datetime string argument
of the form 'YYYYMMDDhhmmss' and returns an L{SerialNumber} instance
whose value is the unix timestamp corresponding to that UTC date.
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L{DateSerialNumber.toRFC4034DateString} interprets the current value as
a unix timestamp and returns a date string representation of that date.
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r r r �test_toRFC4034DateString� s �z*SerialNumberTests.test_toRFC4034DateStringc C � | � td��� d� dS )zq
L{SerialNumber.toRFC4034DateString} stores 32bit timestamps relative to
the UNIX epoch.
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L{SerialNumber} wraps unix timestamps in the year 2106.
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L{SerialNumber} raises ArithmeticError when used to add dates more than
68 years in the future.
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A custom assertion for L{SerialNumber} values that cannot be meaningfully
compared.
"Note that there are some pairs of values s1 and s2 for which s1 is not
equal to s2, but for which s1 is neither greater than, nor less than, s2.
An attempt to use these ordering operators on such pairs of values produces
an undefined result."
@see: U{https://tools.ietf.org/html/rfc1982#section-3.2}
@param testCase: The L{unittest.TestCase} on which to call assertion
methods.
@type testCase: L{unittest.TestCase}
@param s1: The first value to compare.
@type s1: L{SerialNumber}
@param s2: The second value to compare.
@type s2: L{SerialNumber}
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Tests for correct answers to example calculations in RFC1982 5.1.
The simplest meaningful serial number space has SERIAL_BITS == 2. In this
space, the integers that make up the serial number space are 0, 1, 2, and 3.
That is, 3 == 2^SERIAL_BITS - 1.
https://tools.ietf.org/html/rfc1982#section-5.1
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In this space, the largest integer that it is meaningful to add to a
sequence number is 2^(SERIAL_BITS - 1) - 1, or 1.
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Then, as defined 0+1 == 1, 1+1 == 2, 2+1 == 3, and 3+1 == 0.
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Further, 1 > 0, 2 > 1, 3 > 2, and 0 > 3.
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r r r rI / s z SerialNumber2BitTests.test_gtc C sT t | td�td�� t | td�td�� t | td�td�� t | td�td�� dS )zU
It is undefined whether 2 > 0 or 0 > 2, and whether 1 > 3 or 3 > 1.
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�SerialNumber8BitTestsa.
Tests for correct answers to example calculations in RFC1982 5.2.
Consider the case where SERIAL_BITS == 8. In this space the integers that
make up the serial number space are 0, 1, 2, ... 254, 255. 255 ==
2^SERIAL_BITS - 1.
https://tools.ietf.org/html/rfc1982#section-5.2
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In this space, the largest integer that it is meaningful to add to a
sequence number is 2^(SERIAL_BITS - 1) - 1, or 127.
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r r r rx P r z!SerialNumber8BitTests.test_maxaddc C sX | � td�td� td�� | � td�td� td�� | � td�td� td�� dS )z|
Addition is as expected in this space, for example: 255+1 == 0,
100+100 == 200, and 200+100 == 44.
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r r r rK W s z SerialNumber8BitTests.test_addc C s� | � td�td�k� | � td�td�k� | � td�td�k� | � td�td�k� | � td�td�k� | � td�td�k� | � td�td�k� | � td�td�k� | � td�td�k� dS )z�
Comparison is more interesting, 1 > 0, 44 > 0, 100 > 0, 100 > 44,
200 > 100, 255 > 200, 0 > 255, 100 > 255, 0 > 200, and 44 > 200.
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r r r rI ` s z SerialNumber8BitTests.test_gtc C sH | � td�td� td�k� | � td�td� td� td�k � dS )a�
Note that 100+100 > 100, but that (100+100)+100 < 100. Incrementing a
serial number can cause it to become "smaller". Of course, incrementing
by a smaller number will allow many more increments to be made before
this occurs. However this is always something to be aware of, it can
cause surprising errors, or be useful as it is the only defined way to
actually cause a serial number to decrease.
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The pairs of values 0 and 128, 1 and 129, 2 and 130, etc, to 127 and 255
are not equal, but in each pair, neither number is defined as being
greater than, or less than, the other.
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