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-rw-r--r--ext/ply/test/testyacc.py348
1 files changed, 307 insertions, 41 deletions
diff --git a/ext/ply/test/testyacc.py b/ext/ply/test/testyacc.py
index a185cbb29..cc53b6d8f 100644
--- a/ext/ply/test/testyacc.py
+++ b/ext/ply/test/testyacc.py
@@ -1,58 +1,324 @@
-#!/usr/local/bin
-# ----------------------------------------------------------------------
# testyacc.py
-#
-# Run tests for the yacc module
-# ----------------------------------------------------------------------
-import sys,os,glob
+import unittest
+try:
+ import StringIO
+except ImportError:
+ import io as StringIO
-if len(sys.argv) < 2:
- print "Usage: python testyacc.py directory"
- raise SystemExit
+import sys
+import os
-dirname = None
-make = 0
+sys.path.insert(0,"..")
+sys.tracebacklimit = 0
-for o in sys.argv[1:]:
- if o == '-make':
- make = 1
- else:
- dirname = o
- break
+import ply.yacc
-if not dirname:
- print "Usage: python testyacc.py [-make] directory"
- raise SystemExit
+def check_expected(result,expected):
+ resultlines = []
+ for line in result.splitlines():
+ if line.startswith("WARNING: "):
+ line = line[9:]
+ elif line.startswith("ERROR: "):
+ line = line[7:]
+ resultlines.append(line)
-f = glob.glob("%s/%s" % (dirname,"yacc_*.py"))
+ expectedlines = expected.splitlines()
+ if len(resultlines) != len(expectedlines):
+ return False
+ for rline,eline in zip(resultlines,expectedlines):
+ if not rline.endswith(eline):
+ return False
+ return True
-print "**** Running tests for yacc ****"
+def run_import(module):
+ code = "import "+module
+ exec(code)
+ del sys.modules[module]
+
+# Tests related to errors and warnings when building parsers
+class YaccErrorWarningTests(unittest.TestCase):
+ def setUp(self):
+ sys.stderr = StringIO.StringIO()
+ sys.stdout = StringIO.StringIO()
+ try:
+ os.remove("parsetab.py")
+ os.remove("parsetab.pyc")
+ except OSError:
+ pass
+
+ def tearDown(self):
+ sys.stderr = sys.__stderr__
+ sys.stdout = sys.__stdout__
+ def test_yacc_badargs(self):
+ self.assertRaises(ply.yacc.YaccError,run_import,"yacc_badargs")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "yacc_badargs.py:23: Rule 'p_statement_assign' has too many arguments\n"
+ "yacc_badargs.py:27: Rule 'p_statement_expr' requires an argument\n"
+ ))
+ def test_yacc_badid(self):
+ self.assertRaises(ply.yacc.YaccError,run_import,"yacc_badid")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "yacc_badid.py:32: Illegal name 'bad&rule' in rule 'statement'\n"
+ "yacc_badid.py:36: Illegal rule name 'bad&rule'\n"
+ ))
-for t in f:
- name = t[:-3]
- print "Testing %-32s" % name,
- os.system("rm -f %s/parsetab.*" % dirname)
- if make:
- if not os.path.exists("%s.exp" % name):
- os.system("python %s.py >%s.exp 2>&1" % (name,name))
- passed = 1
- else:
- os.system("python %s.py >%s.out 2>&1" % (name,name))
- a = os.system("diff %s.out %s.exp >%s.dif" % (name,name,name))
- if a == 0:
- passed = 1
- else:
- passed = 0
+ def test_yacc_badprec(self):
+ try:
+ run_import("yacc_badprec")
+ except ply.yacc.YaccError:
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "precedence must be a list or tuple\n"
+ ))
+ def test_yacc_badprec2(self):
+ self.assertRaises(ply.yacc.YaccError,run_import,"yacc_badprec2")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "Bad precedence table\n"
+ ))
- if passed:
- print "Passed"
- else:
- print "Failed. See %s.dif" % name
+ def test_yacc_badprec3(self):
+ run_import("yacc_badprec3")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "Precedence already specified for terminal 'MINUS'\n"
+ "Generating LALR tables\n"
+ ))
+
+ def test_yacc_badrule(self):
+ self.assertRaises(ply.yacc.YaccError,run_import,"yacc_badrule")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "yacc_badrule.py:24: Syntax error. Expected ':'\n"
+ "yacc_badrule.py:28: Syntax error in rule 'statement'\n"
+ "yacc_badrule.py:33: Syntax error. Expected ':'\n"
+ "yacc_badrule.py:42: Syntax error. Expected ':'\n"
+ ))
+ def test_yacc_badtok(self):
+ try:
+ run_import("yacc_badtok")
+ except ply.yacc.YaccError:
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "tokens must be a list or tuple\n"))
+ def test_yacc_dup(self):
+ run_import("yacc_dup")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "yacc_dup.py:27: Function p_statement redefined. Previously defined on line 23\n"
+ "Token 'EQUALS' defined, but not used\n"
+ "There is 1 unused token\n"
+ "Generating LALR tables\n"
+ ))
+ def test_yacc_error1(self):
+ try:
+ run_import("yacc_error1")
+ except ply.yacc.YaccError:
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "yacc_error1.py:61: p_error() requires 1 argument\n"))
+ def test_yacc_error2(self):
+ try:
+ run_import("yacc_error2")
+ except ply.yacc.YaccError:
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "yacc_error2.py:61: p_error() requires 1 argument\n"))
+ def test_yacc_error3(self):
+ try:
+ run_import("yacc_error3")
+ except ply.yacc.YaccError:
+ e = sys.exc_info()[1]
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "'p_error' defined, but is not a function or method\n"))
+
+ def test_yacc_error4(self):
+ self.assertRaises(ply.yacc.YaccError,run_import,"yacc_error4")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "yacc_error4.py:62: Illegal rule name 'error'. Already defined as a token\n"
+ ))
+
+ def test_yacc_inf(self):
+ self.assertRaises(ply.yacc.YaccError,run_import,"yacc_inf")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "Token 'NUMBER' defined, but not used\n"
+ "There is 1 unused token\n"
+ "Infinite recursion detected for symbol 'statement'\n"
+ "Infinite recursion detected for symbol 'expression'\n"
+ ))
+ def test_yacc_literal(self):
+ self.assertRaises(ply.yacc.YaccError,run_import,"yacc_literal")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "yacc_literal.py:36: Literal token '**' in rule 'expression' may only be a single character\n"
+ ))
+ def test_yacc_misplaced(self):
+ self.assertRaises(ply.yacc.YaccError,run_import,"yacc_misplaced")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "yacc_misplaced.py:32: Misplaced '|'\n"
+ ))
+ def test_yacc_missing1(self):
+ self.assertRaises(ply.yacc.YaccError,run_import,"yacc_missing1")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "yacc_missing1.py:24: Symbol 'location' used, but not defined as a token or a rule\n"
+ ))
+
+ def test_yacc_nested(self):
+ run_import("yacc_nested")
+ result = sys.stdout.getvalue()
+ self.assert_(check_expected(result,
+ "A\n"
+ "A\n"
+ "A\n",
+ ))
+
+ def test_yacc_nodoc(self):
+ run_import("yacc_nodoc")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "yacc_nodoc.py:27: No documentation string specified in function 'p_statement_expr' (ignored)\n"
+ "Generating LALR tables\n"
+ ))
+
+ def test_yacc_noerror(self):
+ run_import("yacc_noerror")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "no p_error() function is defined\n"
+ "Generating LALR tables\n"
+ ))
+
+ def test_yacc_nop(self):
+ run_import("yacc_nop")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "yacc_nop.py:27: Possible grammar rule 'statement_expr' defined without p_ prefix\n"
+ "Generating LALR tables\n"
+ ))
+
+ def test_yacc_notfunc(self):
+ run_import("yacc_notfunc")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "'p_statement_assign' not defined as a function\n"
+ "Token 'EQUALS' defined, but not used\n"
+ "There is 1 unused token\n"
+ "Generating LALR tables\n"
+ ))
+ def test_yacc_notok(self):
+ try:
+ run_import("yacc_notok")
+ except ply.yacc.YaccError:
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "No token list is defined\n"))
+
+ def test_yacc_rr(self):
+ run_import("yacc_rr")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "Generating LALR tables\n"
+ "1 reduce/reduce conflict\n"
+ "reduce/reduce conflict in state 15 resolved using rule (statement -> NAME EQUALS NUMBER)\n"
+ "rejected rule (expression -> NUMBER) in state 15\n"
+
+ ))
+
+ def test_yacc_rr_unused(self):
+ run_import("yacc_rr_unused")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "no p_error() function is defined\n"
+ "Generating LALR tables\n"
+ "3 reduce/reduce conflicts\n"
+ "reduce/reduce conflict in state 1 resolved using rule (rule3 -> A)\n"
+ "rejected rule (rule4 -> A) in state 1\n"
+ "reduce/reduce conflict in state 1 resolved using rule (rule3 -> A)\n"
+ "rejected rule (rule5 -> A) in state 1\n"
+ "reduce/reduce conflict in state 1 resolved using rule (rule4 -> A)\n"
+ "rejected rule (rule5 -> A) in state 1\n"
+ "Rule (rule5 -> A) is never reduced\n"
+ ))
+
+ def test_yacc_simple(self):
+ run_import("yacc_simple")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "Generating LALR tables\n"
+ ))
+ def test_yacc_sr(self):
+ run_import("yacc_sr")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "Generating LALR tables\n"
+ "20 shift/reduce conflicts\n"
+ ))
+
+ def test_yacc_term1(self):
+ self.assertRaises(ply.yacc.YaccError,run_import,"yacc_term1")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "yacc_term1.py:24: Illegal rule name 'NUMBER'. Already defined as a token\n"
+ ))
+
+ def test_yacc_unused(self):
+ self.assertRaises(ply.yacc.YaccError,run_import,"yacc_unused")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "yacc_unused.py:62: Symbol 'COMMA' used, but not defined as a token or a rule\n"
+ "Symbol 'COMMA' is unreachable\n"
+ "Symbol 'exprlist' is unreachable\n"
+ ))
+ def test_yacc_unused_rule(self):
+ run_import("yacc_unused_rule")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "yacc_unused_rule.py:62: Rule 'integer' defined, but not used\n"
+ "There is 1 unused rule\n"
+ "Symbol 'integer' is unreachable\n"
+ "Generating LALR tables\n"
+ ))
+
+ def test_yacc_uprec(self):
+ self.assertRaises(ply.yacc.YaccError,run_import,"yacc_uprec")
+ result = sys.stderr.getvalue()
+ print repr(result)
+ self.assert_(check_expected(result,
+ "yacc_uprec.py:37: Nothing known about the precedence of 'UMINUS'\n"
+ ))
+
+ def test_yacc_uprec2(self):
+ self.assertRaises(ply.yacc.YaccError,run_import,"yacc_uprec2")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "yacc_uprec2.py:37: Syntax error. Nothing follows %prec\n"
+ ))
+
+ def test_yacc_prec1(self):
+ self.assertRaises(ply.yacc.YaccError,run_import,"yacc_prec1")
+ result = sys.stderr.getvalue()
+ self.assert_(check_expected(result,
+ "Precedence rule 'left' defined for unknown symbol '+'\n"
+ "Precedence rule 'left' defined for unknown symbol '*'\n"
+ "Precedence rule 'left' defined for unknown symbol '-'\n"
+ "Precedence rule 'left' defined for unknown symbol '/'\n"
+ ))
+
+
+
+unittest.main()
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-04 21:14:31 +0000