twisted.names.test.test_dns.OPTHeaderTests

class documentation

class OPTHeaderTests(ComparisonTestsMixin, unittest.TestCase): (source)

Tests for twisted.names.dns._OPTHeader.

Method	`test_decode`	`dns._OPTHeader.decode` unpacks the header fields from a file like object and populates the attributes of an existing `dns._OPTHeader` instance.
Method	`test_decodeAllExpectedBytes`	`dns._OPTHeader.decode` reads all the bytes of the record that is being decoded.
Method	`test_decodeDiscardsName`	`dns._OPTHeader.decode` discards the name which is encoded in the supplied bytes. The name attribute of the resulting `dns._OPTHeader` instance will always be `dns.Name(b'')`.
Method	`test_decodeOnlyExpectedBytes`	`dns._OPTHeader.decode` reads only the bytes from the current file position to the end of the record that is being decoded. Trailing bytes are not consumed.
Method	`test_decodeRdlengthTooLong`	`dns._OPTHeader.decode` raises an exception if the supplied RDLEN is too long.
Method	`test_decodeRdlengthTooShort`	`dns._OPTHeader.decode` raises an exception if the supplied RDLEN is too short.
Method	`test_decodeWithOptions`	If the OPT bytes contain variable options, `dns._OPTHeader.decode` will populate a list `dns._OPTHeader.options` with `dns._OPTVariableOption` instances.
Method	`test_dnssecOK`	`dns._OPTHeader.dnssecOK` defaults to False.
Method	`test_dnssecOKOverride`	`dns._OPTHeader.dnssecOK` can be overridden in the constructor.
Method	`test_encode`	`dns._OPTHeader.encode` packs the header fields and writes them to a file like object passed in as an argument.
Method	`test_encodeWithOptions`	`dns._OPTHeader.options` is a list of `dns._OPTVariableOption` instances which are packed into the rdata area of the header.
Method	`test_equalityDnssecOK`	Two `OPTHeader` instances compare equal if they have the same dnssecOK flags.
Method	`test_equalityExtendedRCODE`	Two `OPTHeader` instances compare equal if they have the same extendedRCODE.
Method	`test_equalityOptions`	Two `OPTHeader` instances compare equal if they have the same options.
Method	`test_equalityUdpPayloadSize`	Two `OPTHeader` instances compare equal if they have the same udpPayloadSize.
Method	`test_equalityVersion`	Two `OPTHeader` instances compare equal if they have the same version.
Method	`test_extendedRCODE`	`dns._OPTHeader.extendedRCODE` defaults to 0.
Method	`test_extendedRCODEOverride`	`dns._OPTHeader.extendedRCODE` can be overridden in the constructor.
Method	`test_fromRRHeader`	`_OPTHeader.fromRRHeader` accepts an `RRHeader` instance and returns an `_OPTHeader` instance whose attribute values have been derived from the `cls`, `ttl` and `payload` attributes of the original header.
Method	`test_interface`	`dns._OPTHeader` implements `dns.IEncodable`.
Method	`test_name`	`dns._OPTHeader.name` is an instance attribute whose value is fixed as the root domain
Method	`test_nameReadonly`	`dns._OPTHeader.name` is readonly.
Method	`test_options`	`dns._OPTHeader.options` defaults to empty list.
Method	`test_optionsOverride`	`dns._OPTHeader.options` can be overridden in the constructor.
Method	`test_repr`	`dns._OPTHeader.__repr__` displays the name and type and all the fixed and extended header values of the OPT record.
Method	`test_type`	`dns._OPTHeader.type` is an instance attribute with fixed value
Method	`test_typeReadonly`	`dns._OPTHeader.type` is readonly.
Method	`test_udpPayloadSize`	`dns._OPTHeader.udpPayloadSize` defaults to 4096 as recommended in rfc6891 section-6.2.5.
Method	`test_udpPayloadSizeOverride`	`dns._OPTHeader.udpPayloadSize` can be overridden in the constructor.
Method	`test_version`	`dns._OPTHeader.version` defaults to 0.
Method	`test_versionOverride`	`dns._OPTHeader.version` can be overridden in the constructor.

Inherited from ComparisonTestsMixin:

Method assertNormalEqualityImplementation Assert that firstValueOne is equal to secondValueOne but not equal to valueOne and that it defines equality cooperatively with other types it doesn't know about.

Inherited from TestCase (via ComparisonTestsMixin):

Method	`__call__`	Run the test. Should always do exactly the same thing as run().
Method	`__init__`	Construct an asynchronous test case for `methodName`.
Method	`addCleanup`	Extend the base cleanup feature with support for cleanup functions which return Deferreds.
Method	`assertFailure`	Fail if `deferred` does not errback with one of `expectedFailures`. Returns the original Deferred with callbacks added. You will need to return this Deferred from your test case.
Method	`deferRunCleanups`	Run any scheduled cleanups and report errors (if any) to the result. object.
Method	`deferSetUp`	Undocumented
Method	`deferTearDown`	Undocumented
Method	`deferTestMethod`	Undocumented
Method	`getSuppress`	Undocumented
Method	`getTimeout`	Returns the timeout value set on this test. Checks on the instance first, then the class, then the module, then packages. As soon as it finds something with a `timeout` attribute, returns that. Returns `util.DEFAULT_TIMEOUT_DURATION`...
Instance Variable	`timeout`	A real number of seconds. If set, the test will raise an error if it takes longer than `timeout` seconds. If not set, util.DEFAULT_TIMEOUT_DURATION is used.
Method	`_cbDeferTestMethod`	Undocumented
Method	`_classCleanUp`	Undocumented
Method	`_cleanUp`	Undocumented
Method	`_deprecateReactor`	Deprecate `iterate`, `crash` and `stop` on `reactor`. That is, each method is wrapped in a function that issues a deprecation warning, then calls the original.
Method	`_ebDeferSetUp`	Undocumented
Method	`_ebDeferTearDown`	Undocumented
Method	`_ebDeferTestMethod`	Undocumented
Method	`_makeReactorMethod`	Create a method which wraps the reactor method `name`. The new method issues a deprecation warning and calls the original.
Method	`_run`	Run a single method, either a test method or fixture.
Method	`_runFixturesAndTest`	Really run `setUp`, the test method, and `tearDown`. Any of these may return `defer.Deferred`s. After they complete, do some reactor cleanup.
Method	`_undeprecateReactor`	Restore the deprecated reactor methods. Undoes what `_deprecateReactor` did.
Method	`_wait`	Take a Deferred that only ever callbacks. Block until it happens.
Instance Variable	`_passed`	Undocumented
Instance Variable	`_reactorMethods`	Undocumented
Instance Variable	`_timedOut`	Undocumented

Inherited from SynchronousTestCase (via ComparisonTestsMixin, TestCase):

Method	`__eq__`	Override the comparison defined by the base TestCase which considers instances of the same class with the same _testMethodName to be equal. Since trial puts TestCase instances into a set, that definition of comparison makes it impossible to run the same test method twice...
Method	`__hash__`	Undocumented
Method	`callDeprecated`	Call a function that should have been deprecated at a specific version and in favor of a specific alternative, and assert that it was thusly deprecated.
Method	`flushLoggedErrors`	Remove stored errors received from the log.
Method	`flushWarnings`	Remove stored warnings from the list of captured warnings and return them.
Method	`getDeprecatedModuleAttribute`	Retrieve a module attribute which should have been deprecated, and assert that we saw the appropriate deprecation warning.
Method	`getSkip`	Return the skip reason set on this test, if any is set. Checks on the instance first, then the class, then the module, then packages. As soon as it finds something with a `skip` attribute, returns that in a tuple (...
Method	`getTodo`	Return a `Todo` object if the test is marked todo. Checks on the instance first, then the class, then the module, then packages. As soon as it finds something with a `todo` attribute, returns that. Returns ...
Method	`mktemp`	Create a new path name which can be used for a new file or directory.
Method	`patch`	Monkey patch an object for the duration of the test.
Method	`run`	Run the test case, storing the results in `result`.
Method	`runTest`	If no `methodName` argument is passed to the constructor, `run` will treat this method as the thing with the actual test inside.
Method	`shortDescription`	Undocumented
Instance Variable	`failureException`	An exception class, defaulting to `FailTest`. If the test method raises this exception, it will be reported as a failure, rather than an exception. All of the assertion methods raise this if the assertion fails.
Instance Variable	`skip`	`None` or a string explaining why this test is to be skipped. If defined, the test will not be run. Instead, it will be reported to the result object as 'skipped' (if the `TestResult` supports skipping).
Instance Variable	`suppress`	`None` or a list of tuples of `(args, kwargs)` to be passed to `warnings.filterwarnings`. Use these to suppress warnings raised in a test. Useful for testing deprecated code. See also `util.suppress`.
Instance Variable	`todo`	`None`, a string or a tuple of `(errors, reason)` where `errors` is either an exception class or an iterable of exception classes, and `reason` is a string. See `Todo` or `makeTodo` for more information.
Method	`_getSkipReason`	Return the reason to use for skipping a test method.
Method	`_getSuppress`	Returns any warning suppressions set for this test. Checks on the instance first, then the class, then the module, then packages. As soon as it finds something with a `suppress` attribute, returns that. ...
Method	`_installObserver`	Undocumented
Method	`_removeObserver`	Undocumented
Method	`_runCleanups`	Synchronously run any cleanups which have been added.
Instance Variable	`_cleanups`	Undocumented
Instance Variable	`_observer`	Undocumented
Instance Variable	`_parents`	Undocumented
Instance Variable	`_testMethodName`	Undocumented
Instance Variable	`_warnings`	Undocumented

Inherited from _Assertions (via ComparisonTestsMixin, TestCase, SynchronousTestCase):

Method	`assertAlmostEqual`	Fail if the two objects are unequal as determined by their difference rounded to the given number of decimal places (default 7) and comparing to zero.
Method	`assertApproximates`	Fail if `first` - `second` > `tolerance`
Method	`assertEqual`	Fail the test if `first` and `second` are not equal.
Method	`assertFalse`	Fail the test if `condition` evaluates to True.
Method	`assertIn`	Fail the test if `containee` is not found in `container`.
Method	`assertIs`	Fail the test if `first` is not `second`. This is an obect-identity-equality test, not an object equality (i.e. `__eq__`) test.
Method	`assertIsInstance`	Fail if `instance` is not an instance of the given class or of one of the given classes.
Method	`assertIsNot`	Fail the test if `first` is `second`. This is an obect-identity-equality test, not an object equality (i.e. `__eq__`) test.
Method	`assertNoResult`	Assert that `deferred` does not have a result at this point.
Method	`assertNotAlmostEqual`	Fail if the two objects are equal as determined by their difference rounded to the given number of decimal places (default 7) and comparing to zero.
Method	`assertNotEqual`	Fail the test if `first` == `second`.
Method	`assertNotIn`	Fail the test if `containee` is found in `container`.
Method	`assertNotIsInstance`	Fail if `instance` is an instance of the given class or of one of the given classes.
Method	`assertNotSubstring`	Fail if `astring` contains `substring`.
Method	`assertRaises`	Fail the test unless calling the function `f` with the given `args` and `kwargs` raises `exception`. The failure will report the traceback and call stack of the unexpected exception.
Method	`assertSubstring`	Fail if `substring` does not exist within `astring`.
Method	`assertTrue`	Fail the test if `condition` evaluates to False.
Method	`assertWarns`	Fail if the given function doesn't generate the specified warning when called. It calls the function, checks the warning, and forwards the result of the function if everything is fine.
Method	`fail`	Absolutely fail the test. Do not pass go, do not collect $200.
Method	`failureResultOf`	Return the current failure result of `deferred` or raise `self.failureException`.
Method	`successResultOf`	Return the current success result of `deferred` or raise `self.failureException`.

def test_decode(self): (source) ¶

dns._OPTHeader.decode unpacks the header fields from a file like object and populates the attributes of an existing dns._OPTHeader instance.

def test_decodeAllExpectedBytes(self): (source) ¶

dns._OPTHeader.decode reads all the bytes of the record that is being decoded.

def test_decodeDiscardsName(self): (source) ¶

dns._OPTHeader.decode discards the name which is encoded in the supplied bytes. The name attribute of the resulting dns._OPTHeader instance will always be dns.Name(b'').

def test_decodeOnlyExpectedBytes(self): (source) ¶

dns._OPTHeader.decode reads only the bytes from the current file position to the end of the record that is being decoded. Trailing bytes are not consumed.

def test_decodeRdlengthTooLong(self): (source) ¶

dns._OPTHeader.decode raises an exception if the supplied RDLEN is too long.

def test_decodeRdlengthTooShort(self): (source) ¶

dns._OPTHeader.decode raises an exception if the supplied RDLEN is too short.

def test_decodeWithOptions(self): (source) ¶

If the OPT bytes contain variable options, dns._OPTHeader.decode will populate a list dns._OPTHeader.options with dns._OPTVariableOption instances.

def test_dnssecOK(self): (source) ¶

dns._OPTHeader.dnssecOK defaults to False.

def test_dnssecOKOverride(self): (source) ¶

dns._OPTHeader.dnssecOK can be overridden in the constructor.

def test_encode(self): (source) ¶

dns._OPTHeader.encode packs the header fields and writes them to a file like object passed in as an argument.

def test_encodeWithOptions(self): (source) ¶

dns._OPTHeader.options is a list of dns._OPTVariableOption instances which are packed into the rdata area of the header.

def test_equalityDnssecOK(self): (source) ¶

Two OPTHeader instances compare equal if they have the same dnssecOK flags.

def test_equalityExtendedRCODE(self): (source) ¶

Two OPTHeader instances compare equal if they have the same extendedRCODE.

def test_equalityOptions(self): (source) ¶

Two OPTHeader instances compare equal if they have the same options.

def test_equalityUdpPayloadSize(self): (source) ¶

Two OPTHeader instances compare equal if they have the same udpPayloadSize.

def test_equalityVersion(self): (source) ¶

Two OPTHeader instances compare equal if they have the same version.

def test_extendedRCODE(self): (source) ¶

dns._OPTHeader.extendedRCODE defaults to 0.

def test_extendedRCODEOverride(self): (source) ¶

dns._OPTHeader.extendedRCODE can be overridden in the constructor.

def test_fromRRHeader(self): (source) ¶

_OPTHeader.fromRRHeader accepts an RRHeader instance and returns an _OPTHeader instance whose attribute values have been derived from the cls, ttl and payload attributes of the original header.