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protobuf/objectivec/DevTools/pddm_tests.py

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#! /usr/bin/env python3
#
# Protocol Buffers - Google's data interchange format
# Copyright 2015 Google Inc. All rights reserved.
# https://developers.google.com/protocol-buffers/
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"""Tests for pddm.py."""
import io
import unittest
from objectivec.DevTools import pddm
class TestParsingMacros(unittest.TestCase):
def testParseEmpty(self):
f = io.StringIO('')
result = pddm.MacroCollection(f)
self.assertEqual(len(result._macros), 0)
def testParseOne(self):
f = io.StringIO("""PDDM-DEFINE foo( )
body""")
result = pddm.MacroCollection(f)
self.assertEqual(len(result._macros), 1)
macro = result._macros.get('foo')
self.assertIsNotNone(macro)
self.assertEqual(macro.name, 'foo')
self.assertEqual(macro.args, tuple())
self.assertEqual(macro.body, 'body')
def testParseGeneral(self):
# Tests multiple defines, spaces in all places, etc.
f = io.StringIO("""
PDDM-DEFINE noArgs( )
body1
body2
PDDM-DEFINE-END
PDDM-DEFINE oneArg(foo)
body3
PDDM-DEFINE twoArgs( bar_ , baz )
body4
body5""")
result = pddm.MacroCollection(f)
self.assertEqual(len(result._macros), 3)
macro = result._macros.get('noArgs')
self.assertIsNotNone(macro)
self.assertEqual(macro.name, 'noArgs')
self.assertEqual(macro.args, tuple())
self.assertEqual(macro.body, 'body1\nbody2\n')
macro = result._macros.get('oneArg')
self.assertIsNotNone(macro)
self.assertEqual(macro.name, 'oneArg')
self.assertEqual(macro.args, ('foo',))
self.assertEqual(macro.body, 'body3')
macro = result._macros.get('twoArgs')
self.assertIsNotNone(macro)
self.assertEqual(macro.name, 'twoArgs')
self.assertEqual(macro.args, ('bar_', 'baz'))
self.assertEqual(macro.body, 'body4\nbody5')
# Add into existing collection
f = io.StringIO("""
PDDM-DEFINE another(a,b,c)
body1
body2""")
result.ParseInput(f)
self.assertEqual(len(result._macros), 4)
macro = result._macros.get('another')
self.assertIsNotNone(macro)
self.assertEqual(macro.name, 'another')
self.assertEqual(macro.args, ('a', 'b', 'c'))
self.assertEqual(macro.body, 'body1\nbody2')
def testParseDirectiveIssues(self):
test_list = [
# Unknown directive
('PDDM-DEFINE foo()\nbody\nPDDM-DEFINED foo\nbaz',
'Hit a line with an unknown directive: '),
# End without begin
('PDDM-DEFINE foo()\nbody\nPDDM-DEFINE-END\nPDDM-DEFINE-END\n',
'Got DEFINE-END directive without an active macro: '),
# Line not in macro block
('PDDM-DEFINE foo()\nbody\nPDDM-DEFINE-END\nmumble\n',
'Hit a line that wasn\'t a directive and no open macro definition: '),
# Redefine macro
('PDDM-DEFINE foo()\nbody\nPDDM-DEFINE foo(a)\nmumble\n',
'Attempt to redefine macro: '),
]
for idx, (input_str, expected_prefix) in enumerate(test_list, 1):
f = io.StringIO(input_str)
try:
result = pddm.MacroCollection(f)
self.fail('Should throw exception, entry %d' % idx)
except pddm.PDDMError as e:
self.assertTrue(e.message.startswith(expected_prefix),
'Entry %d failed: %r' % (idx, e))
def testParseBeginIssues(self):
test_list = [
# 1. No name
('PDDM-DEFINE\nmumble',
'Failed to parse macro definition: '),
# 2. No name (with spaces)
('PDDM-DEFINE \nmumble',
'Failed to parse macro definition: '),
# 3. No open paren
('PDDM-DEFINE foo\nmumble',
'Failed to parse macro definition: '),
# 4. No close paren
('PDDM-DEFINE foo(\nmumble',
'Failed to parse macro definition: '),
# 5. No close paren (with args)
('PDDM-DEFINE foo(a, b\nmumble',
'Failed to parse macro definition: '),
# 6. No name before args
('PDDM-DEFINE (a, b)\nmumble',
'Failed to parse macro definition: '),
# 7. No name before args
('PDDM-DEFINE foo bar(a, b)\nmumble',
'Failed to parse macro definition: '),
# 8. Empty arg name
('PDDM-DEFINE foo(a, ,b)\nmumble',
'Empty arg name in macro definition: '),
('PDDM-DEFINE foo(a,,b)\nmumble',
'Empty arg name in macro definition: '),
# 10. Duplicate name
('PDDM-DEFINE foo(a,b,a,c)\nmumble',
'Arg name "a" used more than once in macro definition: '),
# 11. Invalid arg name
('PDDM-DEFINE foo(a b,c)\nmumble',
'Invalid arg name "a b" in macro definition: '),
('PDDM-DEFINE foo(a.b,c)\nmumble',
'Invalid arg name "a.b" in macro definition: '),
('PDDM-DEFINE foo(a-b,c)\nmumble',
'Invalid arg name "a-b" in macro definition: '),
('PDDM-DEFINE foo(a,b,c.)\nmumble',
'Invalid arg name "c." in macro definition: '),
# 15. Extra stuff after the name
('PDDM-DEFINE foo(a,c) foo\nmumble',
'Failed to parse macro definition: '),
('PDDM-DEFINE foo(a,c) foo)\nmumble',
'Failed to parse macro definition: '),
]
for idx, (input_str, expected_prefix) in enumerate(test_list, 1):
f = io.StringIO(input_str)
try:
result = pddm.MacroCollection(f)
self.fail('Should throw exception, entry %d' % idx)
except pddm.PDDMError as e:
self.assertTrue(e.message.startswith(expected_prefix),
'Entry %d failed: %r' % (idx, e))
class TestExpandingMacros(unittest.TestCase):
def testExpandBasics(self):
f = io.StringIO("""
PDDM-DEFINE noArgs( )
body1
body2
PDDM-DEFINE-END
PDDM-DEFINE oneArg(a)
body3 a
PDDM-DEFINE-END
PDDM-DEFINE twoArgs(b,c)
body4 b c
body5
PDDM-DEFINE-END
""")
mc = pddm.MacroCollection(f)
test_list = [
('noArgs()',
'body1\nbody2\n'),
('oneArg(wee)',
'body3 wee\n'),
('twoArgs(having some, fun)',
'body4 having some fun\nbody5'),
# One arg, pass empty.
('oneArg()',
'body3 \n'),
# Two args, gets empty in each slot.
('twoArgs(, empty)',
'body4 empty\nbody5'),
('twoArgs(empty, )',
'body4 empty \nbody5'),
('twoArgs(, )',
'body4 \nbody5'),
]
for idx, (input_str, expected) in enumerate(test_list, 1):
result = mc.Expand(input_str)
self.assertEqual(result, expected,
'Entry %d --\n Result: %r\n Expected: %r' %
(idx, result, expected))
def testExpandArgOptions(self):
f = io.StringIO("""
PDDM-DEFINE bar(a)
a-a$S-a$l-a$L-a$u-a$U
PDDM-DEFINE-END
""")
mc = pddm.MacroCollection(f)
self.assertEqual(mc.Expand('bar(xYz)'), 'xYz- -xYz-xyz-XYz-XYZ')
self.assertEqual(mc.Expand('bar(MnoP)'), 'MnoP- -mnoP-mnop-MnoP-MNOP')
# Test empty
self.assertEqual(mc.Expand('bar()'), '-----')
def testExpandSimpleMacroErrors(self):
f = io.StringIO("""
PDDM-DEFINE foo(a, b)
<a-z>
PDDM-DEFINE baz(a)
a - a$z
""")
mc = pddm.MacroCollection(f)
test_list = [
# 1. Unknown macro
('bar()',
'No macro named "bar".'),
('bar(a)',
'No macro named "bar".'),
# 3. Arg mismatch
('foo()',
'Expected 2 args, got: "foo()".'),
('foo(a b)',
'Expected 2 args, got: "foo(a b)".'),
('foo(a,b,c)',
'Expected 2 args, got: "foo(a,b,c)".'),
# 6. Unknown option in expansion
('baz(mumble)',
'Unknown arg option "a$z" while expanding "baz(mumble)".'),
]
for idx, (input_str, expected_err) in enumerate(test_list, 1):
try:
result = mc.Expand(input_str)
self.fail('Should throw exception, entry %d' % idx)
except pddm.PDDMError as e:
self.assertEqual(e.message, expected_err,
'Entry %d failed: %r' % (idx, e))
def testExpandReferences(self):
f = io.StringIO("""
PDDM-DEFINE StartIt()
foo(abc, def)
foo(ghi, jkl)
PDDM-DEFINE foo(a, b)
bar(a, int)
bar(b, NSString *)
PDDM-DEFINE bar(n, t)
- (t)n;
- (void)set##n$u##:(t)value;
""")
mc = pddm.MacroCollection(f)
expected = """- (int)abc;
- (void)setAbc:(int)value;
- (NSString *)def;
- (void)setDef:(NSString *)value;
- (int)ghi;
- (void)setGhi:(int)value;
- (NSString *)jkl;
- (void)setJkl:(NSString *)value;
"""
self.assertEqual(mc.Expand('StartIt()'), expected)
def testCatchRecursion(self):
f = io.StringIO("""
PDDM-DEFINE foo(a, b)
bar(1, a)
bar(2, b)
PDDM-DEFINE bar(x, y)
foo(x, y)
""")
mc = pddm.MacroCollection(f)
try:
result = mc.Expand('foo(A,B)')
self.fail('Should throw exception! Test failed to catch recursion.')
except pddm.PDDMError as e:
self.assertEqual(e.message,
'Found macro recursion, invoking "foo(1, A)":\n...while expanding "bar(1, A)".\n...while expanding "foo(A,B)".')
class TestParsingSource(unittest.TestCase):
def testBasicParse(self):
test_list = [
# 1. no directives
('a\nb\nc',
(3,) ),
# 2. One define
('a\n//%PDDM-DEFINE foo()\n//%body\nc',
(1, 2, 1) ),
# 3. Two defines
('a\n//%PDDM-DEFINE foo()\n//%body\n//%PDDM-DEFINE bar()\n//%body2\nc',
(1, 4, 1) ),
# 4. Two defines with ends
('a\n//%PDDM-DEFINE foo()\n//%body\n//%PDDM-DEFINE-END\n'
'//%PDDM-DEFINE bar()\n//%body2\n//%PDDM-DEFINE-END\nc',
(1, 6, 1) ),
# 5. One expand, one define (that runs to end of file)
('a\n//%PDDM-EXPAND foo()\nbody\n//%PDDM-EXPAND-END\n'
'//%PDDM-DEFINE bar()\n//%body2\n',
(1, 1, 2) ),
# 6. One define ended with an expand.
('a\nb\n//%PDDM-DEFINE bar()\n//%body2\n'
'//%PDDM-EXPAND bar()\nbody2\n//%PDDM-EXPAND-END\n',
(2, 2, 1) ),
# 7. Two expands (one end), one define.
('a\n//%PDDM-EXPAND foo(1)\nbody\n//%PDDM-EXPAND foo(2)\nbody2\n//%PDDM-EXPAND-END\n'
'//%PDDM-DEFINE foo()\n//%body2\n',
(1, 2, 2) ),
]
for idx, (input_str, line_counts) in enumerate(test_list, 1):
f = io.StringIO(input_str)
sf = pddm.SourceFile(f)
sf._ParseFile()
self.assertEqual(len(sf._sections), len(line_counts),
'Entry %d -- %d != %d' %
(idx, len(sf._sections), len(line_counts)))
for idx2, (sec, expected) in enumerate(zip(sf._sections, line_counts), 1):
self.assertEqual(sec.num_lines_captured, expected,
'Entry %d, section %d -- %d != %d' %
(idx, idx2, sec.num_lines_captured, expected))
def testErrors(self):
test_list = [
# 1. Directive within expansion
('//%PDDM-EXPAND a()\n//%PDDM-BOGUS',
'Ran into directive ("//%PDDM-BOGUS", line 2) while in "//%PDDM-EXPAND a()".'),
('//%PDDM-EXPAND a()\n//%PDDM-DEFINE a()\n//%body\n',
'Ran into directive ("//%PDDM-DEFINE", line 2) while in "//%PDDM-EXPAND a()".'),
# 3. Expansion ran off end of file
('//%PDDM-EXPAND a()\na\nb\n',
'Hit the end of the file while in "//%PDDM-EXPAND a()".'),
# 4. Directive within define
('//%PDDM-DEFINE a()\n//%body\n//%PDDM-BOGUS',
'Ran into directive ("//%PDDM-BOGUS", line 3) while in "//%PDDM-DEFINE a()".'),
('//%PDDM-DEFINE a()\n//%body\n//%PDDM-EXPAND-END a()',
'Ran into directive ("//%PDDM-EXPAND-END", line 3) while in "//%PDDM-DEFINE a()".'),
# 6. Directives that shouldn't start sections
('a\n//%PDDM-DEFINE-END a()\n//a\n',
'Unexpected line 2: "//%PDDM-DEFINE-END a()".'),
('a\n//%PDDM-EXPAND-END a()\n//a\n',
'Unexpected line 2: "//%PDDM-EXPAND-END a()".'),
('//%PDDM-BOGUS\n//a\n',
'Unexpected line 1: "//%PDDM-BOGUS".'),
]
for idx, (input_str, expected_err) in enumerate(test_list, 1):
f = io.StringIO(input_str)
try:
pddm.SourceFile(f)._ParseFile()
self.fail('Should throw exception, entry %d' % idx)
except pddm.PDDMError as e:
self.assertEqual(e.message, expected_err,
'Entry %d failed: %r' % (idx, e))
class TestProcessingSource(unittest.TestCase):
def testBasics(self):
self.maxDiff = None
input_str = """
//%PDDM-IMPORT-DEFINES ImportFile
foo
//%PDDM-EXPAND mumble(abc)
//%PDDM-EXPAND-END
bar
//%PDDM-EXPAND mumble(def)
//%PDDM-EXPAND mumble(ghi)
//%PDDM-EXPAND-END
baz
//%PDDM-DEFINE mumble(a_)
//%a_: getName(a_)
"""
input_str2 = """
//%PDDM-DEFINE getName(x_)
//%do##x_$u##(int x_);
"""
expected = """
//%PDDM-IMPORT-DEFINES ImportFile
foo
//%PDDM-EXPAND mumble(abc)
// This block of code is generated, do not edit it directly.
abc: doAbc(int abc);
//%PDDM-EXPAND-END mumble(abc)
bar
//%PDDM-EXPAND mumble(def)
// This block of code is generated, do not edit it directly.
def: doDef(int def);
//%PDDM-EXPAND mumble(ghi)
// This block of code is generated, do not edit it directly.
ghi: doGhi(int ghi);
//%PDDM-EXPAND-END (2 expansions)
baz
//%PDDM-DEFINE mumble(a_)
//%a_: getName(a_)
"""
expected_stripped = """
//%PDDM-IMPORT-DEFINES ImportFile
foo
//%PDDM-EXPAND mumble(abc)
//%PDDM-EXPAND-END mumble(abc)
bar
//%PDDM-EXPAND mumble(def)
//%PDDM-EXPAND mumble(ghi)
//%PDDM-EXPAND-END (2 expansions)
baz
//%PDDM-DEFINE mumble(a_)
//%a_: getName(a_)
"""
def _Resolver(name):
self.assertEqual(name, 'ImportFile')
return io.StringIO(input_str2)
f = io.StringIO(input_str)
sf = pddm.SourceFile(f, _Resolver)
sf.ProcessContent()
self.assertEqual(sf.processed_content, expected)
# Feed it through and nothing should change.
f2 = io.StringIO(sf.processed_content)
sf2 = pddm.SourceFile(f2, _Resolver)
sf2.ProcessContent()
self.assertEqual(sf2.processed_content, expected)
self.assertEqual(sf2.processed_content, sf.processed_content)
# Test stripping (with the original input and expanded version).
f2 = io.StringIO(input_str)
sf2 = pddm.SourceFile(f2)
sf2.ProcessContent(strip_expansion=True)
self.assertEqual(sf2.processed_content, expected_stripped)
f2 = io.StringIO(sf.processed_content)
sf2 = pddm.SourceFile(f2, _Resolver)
sf2.ProcessContent(strip_expansion=True)
self.assertEqual(sf2.processed_content, expected_stripped)
def testProcessFileWithMacroParseError(self):
input_str = """
foo
//%PDDM-DEFINE mumble(a_)
//%body
//%PDDM-DEFINE mumble(x_)
//%body2
"""
f = io.StringIO(input_str)
sf = pddm.SourceFile(f)
try:
sf.ProcessContent()
self.fail('Should throw exception! Test failed to catch macro parsing error.')
except pddm.PDDMError as e:
self.assertEqual(e.message,
'Attempt to redefine macro: "PDDM-DEFINE mumble(x_)"\n'
'...while parsing section that started:\n'
' Line 3: //%PDDM-DEFINE mumble(a_)')
def testProcessFileWithExpandError(self):
input_str = """
foo
//%PDDM-DEFINE mumble(a_)
//%body
//%PDDM-EXPAND foobar(x_)
//%PDDM-EXPAND-END
"""
f = io.StringIO(input_str)
sf = pddm.SourceFile(f)
try:
sf.ProcessContent()
self.fail('Should throw exception! Test failed to catch expand error.')
except pddm.PDDMError as e:
self.assertEqual(e.message,
'No macro named "foobar".\n'
'...while expanding "foobar(x_)" from the section that'
' started:\n Line 5: //%PDDM-EXPAND foobar(x_)')
if __name__ == '__main__':
unittest.main()