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- # Copyright (c) Twisted Matrix Laboratories.
- # See LICENSE for details.
-
- """
- Tests for L{twisted.python.usage}, a command line option parsing library.
- """
-
-
- from twisted.python import usage
- from twisted.trial import unittest
-
-
- class WellBehaved(usage.Options):
- optParameters = [
- ["long", "w", "default", "and a docstring"],
- ["another", "n", "no docstring"],
- ["longonly", None, "noshort"],
- ["shortless", None, "except", "this one got docstring"],
- ]
- optFlags = [
- [
- "aflag",
- "f",
- """
-
- flagallicious docstringness for this here
-
- """,
- ],
- ["flout", "o"],
- ]
-
- def opt_myflag(self):
- self.opts["myflag"] = "PONY!"
-
- def opt_myparam(self, value):
- self.opts["myparam"] = f"{value} WITH A PONY!"
-
-
- class ParseCorrectnessTests(unittest.TestCase):
- """
- Test L{usage.Options.parseOptions} for correct values under
- good conditions.
- """
-
- def setUp(self):
- """
- Instantiate and parseOptions a well-behaved Options class.
- """
-
- self.niceArgV = (
- "--long Alpha -n Beta " "--shortless Gamma -f --myflag " "--myparam Tofu"
- ).split()
-
- self.nice = WellBehaved()
-
- self.nice.parseOptions(self.niceArgV)
-
- def test_checkParameters(self):
- """
- Parameters have correct values.
- """
- self.assertEqual(self.nice.opts["long"], "Alpha")
- self.assertEqual(self.nice.opts["another"], "Beta")
- self.assertEqual(self.nice.opts["longonly"], "noshort")
- self.assertEqual(self.nice.opts["shortless"], "Gamma")
-
- def test_checkFlags(self):
- """
- Flags have correct values.
- """
- self.assertEqual(self.nice.opts["aflag"], 1)
- self.assertEqual(self.nice.opts["flout"], 0)
-
- def test_checkCustoms(self):
- """
- Custom flags and parameters have correct values.
- """
- self.assertEqual(self.nice.opts["myflag"], "PONY!")
- self.assertEqual(self.nice.opts["myparam"], "Tofu WITH A PONY!")
-
-
- class TypedOptions(usage.Options):
- optParameters = [
- ["fooint", None, 392, "Foo int", int],
- ["foofloat", None, 4.23, "Foo float", float],
- ["eggint", None, None, "Egg int without default", int],
- ["eggfloat", None, None, "Egg float without default", float],
- ]
-
- def opt_under_score(self, value):
- """
- This option has an underscore in its name to exercise the _ to -
- translation.
- """
- self.underscoreValue = value
-
- opt_u = opt_under_score
-
-
- class TypedTests(unittest.TestCase):
- """
- Test L{usage.Options.parseOptions} for options with forced types.
- """
-
- def setUp(self):
- self.usage = TypedOptions()
-
- def test_defaultValues(self):
- """
- Default values are parsed.
- """
- argV = []
- self.usage.parseOptions(argV)
- self.assertEqual(self.usage.opts["fooint"], 392)
- self.assertIsInstance(self.usage.opts["fooint"], int)
- self.assertEqual(self.usage.opts["foofloat"], 4.23)
- self.assertIsInstance(self.usage.opts["foofloat"], float)
- self.assertIsNone(self.usage.opts["eggint"])
- self.assertIsNone(self.usage.opts["eggfloat"])
-
- def test_parsingValues(self):
- """
- int and float values are parsed.
- """
- argV = ("--fooint 912 --foofloat -823.1 " "--eggint 32 --eggfloat 21").split()
- self.usage.parseOptions(argV)
- self.assertEqual(self.usage.opts["fooint"], 912)
- self.assertIsInstance(self.usage.opts["fooint"], int)
- self.assertEqual(self.usage.opts["foofloat"], -823.1)
- self.assertIsInstance(self.usage.opts["foofloat"], float)
- self.assertEqual(self.usage.opts["eggint"], 32)
- self.assertIsInstance(self.usage.opts["eggint"], int)
- self.assertEqual(self.usage.opts["eggfloat"], 21.0)
- self.assertIsInstance(self.usage.opts["eggfloat"], float)
-
- def test_underscoreOption(self):
- """
- A dash in an option name is translated to an underscore before being
- dispatched to a handler.
- """
- self.usage.parseOptions(["--under-score", "foo"])
- self.assertEqual(self.usage.underscoreValue, "foo")
-
- def test_underscoreOptionAlias(self):
- """
- An option name with a dash in it can have an alias.
- """
- self.usage.parseOptions(["-u", "bar"])
- self.assertEqual(self.usage.underscoreValue, "bar")
-
- def test_invalidValues(self):
- """
- Passing wrong values raises an error.
- """
- argV = "--fooint egg".split()
- self.assertRaises(usage.UsageError, self.usage.parseOptions, argV)
-
-
- class WrongTypedOptions(usage.Options):
- optParameters = [["barwrong", None, None, "Bar with wrong coerce", "he"]]
-
-
- class WeirdCallableOptions(usage.Options):
- def _bar(value):
- raise RuntimeError("Ouch")
-
- def _foo(value):
- raise ValueError("Yay")
-
- optParameters = [
- ["barwrong", None, None, "Bar with strange callable", _bar],
- ["foowrong", None, None, "Foo with strange callable", _foo],
- ]
-
-
- class WrongTypedTests(unittest.TestCase):
- """
- Test L{usage.Options.parseOptions} for wrong coerce options.
- """
-
- def test_nonCallable(self):
- """
- Using a non-callable type fails.
- """
- us = WrongTypedOptions()
- argV = "--barwrong egg".split()
- self.assertRaises(TypeError, us.parseOptions, argV)
-
- def test_notCalledInDefault(self):
- """
- The coerce functions are not called if no values are provided.
- """
- us = WeirdCallableOptions()
- argV = []
- us.parseOptions(argV)
-
- def test_weirdCallable(self):
- """
- Errors raised by coerce functions are handled properly.
- """
- us = WeirdCallableOptions()
- argV = "--foowrong blah".split()
- # ValueError is swallowed as UsageError
- e = self.assertRaises(usage.UsageError, us.parseOptions, argV)
- self.assertEqual(str(e), "Parameter type enforcement failed: Yay")
-
- us = WeirdCallableOptions()
- argV = "--barwrong blah".split()
- # RuntimeError is not swallowed
- self.assertRaises(RuntimeError, us.parseOptions, argV)
-
-
- class OutputTests(unittest.TestCase):
- def test_uppercasing(self):
- """
- Error output case adjustment does not mangle options
- """
- opt = WellBehaved()
- e = self.assertRaises(usage.UsageError, opt.parseOptions, ["-Z"])
- self.assertEqual(str(e), "option -Z not recognized")
-
-
- class InquisitionOptions(usage.Options):
- optFlags = [
- ("expect", "e"),
- ]
- optParameters = [
- ("torture-device", "t", "comfy-chair", "set preferred torture device"),
- ]
-
-
- class HolyQuestOptions(usage.Options):
- optFlags = [
- ("horseback", "h", "use a horse"),
- ("for-grail", "g"),
- ]
-
-
- class SubCommandOptions(usage.Options):
- optFlags = [
- ("europian-swallow", None, "set default swallow type to Europian"),
- ]
- subCommands = [
- ("inquisition", "inquest", InquisitionOptions, "Perform an inquisition"),
- ("holyquest", "quest", HolyQuestOptions, "Embark upon a holy quest"),
- ]
-
-
- class SubCommandTests(unittest.TestCase):
- """
- Test L{usage.Options.parseOptions} for options with subcommands.
- """
-
- def test_simpleSubcommand(self):
- """
- A subcommand is recognized.
- """
- o = SubCommandOptions()
- o.parseOptions(["--europian-swallow", "inquisition"])
- self.assertTrue(o["europian-swallow"])
- self.assertEqual(o.subCommand, "inquisition")
- self.assertIsInstance(o.subOptions, InquisitionOptions)
- self.assertFalse(o.subOptions["expect"])
- self.assertEqual(o.subOptions["torture-device"], "comfy-chair")
-
- def test_subcommandWithFlagsAndOptions(self):
- """
- Flags and options of a subcommand are assigned.
- """
- o = SubCommandOptions()
- o.parseOptions(["inquisition", "--expect", "--torture-device=feather"])
- self.assertFalse(o["europian-swallow"])
- self.assertEqual(o.subCommand, "inquisition")
- self.assertIsInstance(o.subOptions, InquisitionOptions)
- self.assertTrue(o.subOptions["expect"])
- self.assertEqual(o.subOptions["torture-device"], "feather")
-
- def test_subcommandAliasWithFlagsAndOptions(self):
- """
- Flags and options of a subcommand alias are assigned.
- """
- o = SubCommandOptions()
- o.parseOptions(["inquest", "--expect", "--torture-device=feather"])
- self.assertFalse(o["europian-swallow"])
- self.assertEqual(o.subCommand, "inquisition")
- self.assertIsInstance(o.subOptions, InquisitionOptions)
- self.assertTrue(o.subOptions["expect"])
- self.assertEqual(o.subOptions["torture-device"], "feather")
-
- def test_anotherSubcommandWithFlagsAndOptions(self):
- """
- Flags and options of another subcommand are assigned.
- """
- o = SubCommandOptions()
- o.parseOptions(["holyquest", "--for-grail"])
- self.assertFalse(o["europian-swallow"])
- self.assertEqual(o.subCommand, "holyquest")
- self.assertIsInstance(o.subOptions, HolyQuestOptions)
- self.assertFalse(o.subOptions["horseback"])
- self.assertTrue(o.subOptions["for-grail"])
-
- def test_noSubcommand(self):
- """
- If no subcommand is specified and no default subcommand is assigned,
- a subcommand will not be implied.
- """
- o = SubCommandOptions()
- o.parseOptions(["--europian-swallow"])
- self.assertTrue(o["europian-swallow"])
- self.assertIsNone(o.subCommand)
- self.assertFalse(hasattr(o, "subOptions"))
-
- def test_defaultSubcommand(self):
- """
- Flags and options in the default subcommand are assigned.
- """
- o = SubCommandOptions()
- o.defaultSubCommand = "inquest"
- o.parseOptions(["--europian-swallow"])
- self.assertTrue(o["europian-swallow"])
- self.assertEqual(o.subCommand, "inquisition")
- self.assertIsInstance(o.subOptions, InquisitionOptions)
- self.assertFalse(o.subOptions["expect"])
- self.assertEqual(o.subOptions["torture-device"], "comfy-chair")
-
- def test_subCommandParseOptionsHasParent(self):
- """
- The parseOptions method from the Options object specified for the
- given subcommand is called.
- """
-
- class SubOpt(usage.Options):
- def parseOptions(self, *a, **kw):
- self.sawParent = self.parent
- usage.Options.parseOptions(self, *a, **kw)
-
- class Opt(usage.Options):
- subCommands = [
- ("foo", "f", SubOpt, "bar"),
- ]
-
- o = Opt()
- o.parseOptions(["foo"])
- self.assertTrue(hasattr(o.subOptions, "sawParent"))
- self.assertEqual(o.subOptions.sawParent, o)
-
- def test_subCommandInTwoPlaces(self):
- """
- The .parent pointer is correct even when the same Options class is
- used twice.
- """
-
- class SubOpt(usage.Options):
- pass
-
- class OptFoo(usage.Options):
- subCommands = [
- ("foo", "f", SubOpt, "quux"),
- ]
-
- class OptBar(usage.Options):
- subCommands = [
- ("bar", "b", SubOpt, "quux"),
- ]
-
- oFoo = OptFoo()
- oFoo.parseOptions(["foo"])
- oBar = OptBar()
- oBar.parseOptions(["bar"])
- self.assertTrue(hasattr(oFoo.subOptions, "parent"))
- self.assertTrue(hasattr(oBar.subOptions, "parent"))
- self.failUnlessIdentical(oFoo.subOptions.parent, oFoo)
- self.failUnlessIdentical(oBar.subOptions.parent, oBar)
-
-
- class HelpStringTests(unittest.TestCase):
- """
- Test generated help strings.
- """
-
- def setUp(self):
- """
- Instantiate a well-behaved Options class.
- """
-
- self.niceArgV = (
- "--long Alpha -n Beta " "--shortless Gamma -f --myflag " "--myparam Tofu"
- ).split()
-
- self.nice = WellBehaved()
-
- def test_noGoBoom(self):
- """
- __str__ shouldn't go boom.
- """
- try:
- self.nice.__str__()
- except Exception as e:
- self.fail(e)
-
- def test_whitespaceStripFlagsAndParameters(self):
- """
- Extra whitespace in flag and parameters docs is stripped.
- """
- # We test this by making sure aflag and it's help string are on the
- # same line.
- lines = [s for s in str(self.nice).splitlines() if s.find("aflag") >= 0]
- self.assertTrue(len(lines) > 0)
- self.assertTrue(lines[0].find("flagallicious") >= 0)
-
-
- class PortCoerceTests(unittest.TestCase):
- """
- Test the behavior of L{usage.portCoerce}.
- """
-
- def test_validCoerce(self):
- """
- Test the answers with valid input.
- """
- self.assertEqual(0, usage.portCoerce("0"))
- self.assertEqual(3210, usage.portCoerce("3210"))
- self.assertEqual(65535, usage.portCoerce("65535"))
-
- def test_errorCoerce(self):
- """
- Test error path.
- """
- self.assertRaises(ValueError, usage.portCoerce, "")
- self.assertRaises(ValueError, usage.portCoerce, "-21")
- self.assertRaises(ValueError, usage.portCoerce, "212189")
- self.assertRaises(ValueError, usage.portCoerce, "foo")
-
-
- class ZshCompleterTests(unittest.TestCase):
- """
- Test the behavior of the various L{twisted.usage.Completer} classes
- for producing output usable by zsh tab-completion system.
- """
-
- def test_completer(self):
- """
- Completer produces zsh shell-code that produces no completion matches.
- """
- c = usage.Completer()
- got = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(got, ":some-option:")
-
- c = usage.Completer(descr="some action", repeat=True)
- got = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(got, "*:some action:")
-
- def test_files(self):
- """
- CompleteFiles produces zsh shell-code that completes file names
- according to a glob.
- """
- c = usage.CompleteFiles()
- got = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(got, ':some-option (*):_files -g "*"')
-
- c = usage.CompleteFiles("*.py")
- got = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(got, ':some-option (*.py):_files -g "*.py"')
-
- c = usage.CompleteFiles("*.py", descr="some action", repeat=True)
- got = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(got, '*:some action (*.py):_files -g "*.py"')
-
- def test_dirs(self):
- """
- CompleteDirs produces zsh shell-code that completes directory names.
- """
- c = usage.CompleteDirs()
- got = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(got, ":some-option:_directories")
-
- c = usage.CompleteDirs(descr="some action", repeat=True)
- got = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(got, "*:some action:_directories")
-
- def test_list(self):
- """
- CompleteList produces zsh shell-code that completes words from a fixed
- list of possibilities.
- """
- c = usage.CompleteList("ABC")
- got = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(got, ":some-option:(A B C)")
-
- c = usage.CompleteList(["1", "2", "3"])
- got = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(got, ":some-option:(1 2 3)")
-
- c = usage.CompleteList(["1", "2", "3"], descr="some action", repeat=True)
- got = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(got, "*:some action:(1 2 3)")
-
- def test_multiList(self):
- """
- CompleteMultiList produces zsh shell-code that completes multiple
- comma-separated words from a fixed list of possibilities.
- """
- c = usage.CompleteMultiList("ABC")
- got = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(got, ":some-option:_values -s , 'some-option' A B C")
-
- c = usage.CompleteMultiList(["1", "2", "3"])
- got = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(got, ":some-option:_values -s , 'some-option' 1 2 3")
-
- c = usage.CompleteMultiList(["1", "2", "3"], descr="some action", repeat=True)
- got = c._shellCode("some-option", usage._ZSH)
- expected = "*:some action:_values -s , 'some action' 1 2 3"
- self.assertEqual(got, expected)
-
- def test_usernames(self):
- """
- CompleteUsernames produces zsh shell-code that completes system
- usernames.
- """
- c = usage.CompleteUsernames()
- out = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(out, ":some-option:_users")
-
- c = usage.CompleteUsernames(descr="some action", repeat=True)
- out = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(out, "*:some action:_users")
-
- def test_groups(self):
- """
- CompleteGroups produces zsh shell-code that completes system group
- names.
- """
- c = usage.CompleteGroups()
- out = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(out, ":group:_groups")
-
- c = usage.CompleteGroups(descr="some action", repeat=True)
- out = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(out, "*:some action:_groups")
-
- def test_hostnames(self):
- """
- CompleteHostnames produces zsh shell-code that completes hostnames.
- """
- c = usage.CompleteHostnames()
- out = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(out, ":some-option:_hosts")
-
- c = usage.CompleteHostnames(descr="some action", repeat=True)
- out = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(out, "*:some action:_hosts")
-
- def test_userAtHost(self):
- """
- CompleteUserAtHost produces zsh shell-code that completes hostnames or
- a word of the form <username>@<hostname>.
- """
- c = usage.CompleteUserAtHost()
- out = c._shellCode("some-option", usage._ZSH)
- self.assertTrue(out.startswith(":host | user@host:"))
-
- c = usage.CompleteUserAtHost(descr="some action", repeat=True)
- out = c._shellCode("some-option", usage._ZSH)
- self.assertTrue(out.startswith("*:some action:"))
-
- def test_netInterfaces(self):
- """
- CompleteNetInterfaces produces zsh shell-code that completes system
- network interface names.
- """
- c = usage.CompleteNetInterfaces()
- out = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(out, ":some-option:_net_interfaces")
-
- c = usage.CompleteNetInterfaces(descr="some action", repeat=True)
- out = c._shellCode("some-option", usage._ZSH)
- self.assertEqual(out, "*:some action:_net_interfaces")
-
-
- class CompleterNotImplementedTests(unittest.TestCase):
- """
- Using an unknown shell constant with the various Completer() classes
- should raise NotImplementedError
- """
-
- def test_unknownShell(self):
- """
- Using an unknown shellType should raise NotImplementedError
- """
- classes = [
- usage.Completer,
- usage.CompleteFiles,
- usage.CompleteDirs,
- usage.CompleteList,
- usage.CompleteMultiList,
- usage.CompleteUsernames,
- usage.CompleteGroups,
- usage.CompleteHostnames,
- usage.CompleteUserAtHost,
- usage.CompleteNetInterfaces,
- ]
-
- for cls in classes:
- try:
- action = cls()
- except BaseException:
- action = cls(None)
- self.assertRaises(
- NotImplementedError, action._shellCode, None, "bad_shell_type"
- )
-
-
- class FlagFunctionTests(unittest.TestCase):
- """
- Tests for L{usage.flagFunction}.
- """
-
- class SomeClass:
- """
- Dummy class for L{usage.flagFunction} tests.
- """
-
- def oneArg(self, a):
- """
- A one argument method to be tested by L{usage.flagFunction}.
-
- @param a: a useless argument to satisfy the function's signature.
- """
-
- def noArg(self):
- """
- A no argument method to be tested by L{usage.flagFunction}.
- """
-
- def manyArgs(self, a, b, c):
- """
- A multiple arguments method to be tested by L{usage.flagFunction}.
-
- @param a: a useless argument to satisfy the function's signature.
- @param b: a useless argument to satisfy the function's signature.
- @param c: a useless argument to satisfy the function's signature.
- """
-
- def test_hasArg(self):
- """
- L{usage.flagFunction} returns C{False} if the method checked allows
- exactly one argument.
- """
- self.assertIs(False, usage.flagFunction(self.SomeClass().oneArg))
-
- def test_noArg(self):
- """
- L{usage.flagFunction} returns C{True} if the method checked allows
- exactly no argument.
- """
- self.assertIs(True, usage.flagFunction(self.SomeClass().noArg))
-
- def test_tooManyArguments(self):
- """
- L{usage.flagFunction} raises L{usage.UsageError} if the method checked
- allows more than one argument.
- """
- exc = self.assertRaises(
- usage.UsageError, usage.flagFunction, self.SomeClass().manyArgs
- )
- self.assertEqual("Invalid Option function for manyArgs", str(exc))
-
- def test_tooManyArgumentsAndSpecificErrorMessage(self):
- """
- L{usage.flagFunction} uses the given method name in the error message
- raised when the method allows too many arguments.
- """
- exc = self.assertRaises(
- usage.UsageError, usage.flagFunction, self.SomeClass().manyArgs, "flubuduf"
- )
- self.assertEqual("Invalid Option function for flubuduf", str(exc))
-
-
- class OptionsInternalTests(unittest.TestCase):
- """
- Tests internal behavior of C{usage.Options}.
- """
-
- def test_optionsAliasesOrder(self):
- """
- Options which are synonyms to another option are aliases towards the
- longest option name.
- """
-
- class Opts(usage.Options):
- def opt_very_very_long(self):
- """
- This is an option method with a very long name, that is going to
- be aliased.
- """
-
- opt_short = opt_very_very_long
- opt_s = opt_very_very_long
-
- opts = Opts()
-
- self.assertEqual(
- dict.fromkeys(["s", "short", "very-very-long"], "very-very-long"),
- {
- "s": opts.synonyms["s"],
- "short": opts.synonyms["short"],
- "very-very-long": opts.synonyms["very-very-long"],
- },
- )
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