--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/PPParserTest.st	Mon Jul 02 07:38:45 2018 +0200
@@ -0,0 +1,1370 @@
+"{ Package: 'stx:goodies/petitparser/tests' }"
+
+"{ NameSpace: Smalltalk }"
+
+PPAbstractParserTest subclass:#PPParserTest
+	instanceVariableNames:''
+	classVariableNames:''
+	poolDictionaries:''
+	category:'PetitTests-Tests'
+!
+
+
+!PPParserTest methodsFor:'testing'!
+
+testAnd
+	| parser |
+	parser := 'foo' asParser flatten , 'bar' asParser flatten and.
+	
+	self assert: parser parse: 'foobar' to: #('foo' 'bar') end: 3.
+	self assert: parser fail: 'foobaz'.
+	
+	parser := 'foo' asParser and.
+	self assert: parser and = parser
+!
+
+testBlock
+	| parser |
+	parser := [ :s | s next ] asParser.
+	
+	self assert: parser parse: 'ab' to: $a end: 1.
+	self assert: parser parse: 'b' to: $b.
+	self assert: parser parse: '' to: nil
+!
+
+testChoice
+	| parser |
+	parser := $a asParser / $b asParser.
+	
+	self assert: parser parse: 'a' to: $a.
+	self assert: parser parse: 'b' to: $b.
+
+	self assert: parser parse: 'ab' to: $a end: 1.
+	self assert: parser parse: 'ba' to: $b end: 1.
+
+	self assert: parser fail: ''.
+	self assert: parser fail: 'c'.
+	self assert: parser fail: 'ca'
+!
+
+testDelimitedBy
+	| parser |
+	parser := $a asParser delimitedBy: $b asParser.
+	
+	self assert: parser parse: 'a' to: #($a).
+	self assert: parser parse: 'aba' to: #($a $b $a).
+	self assert: parser parse: 'ababa' to: #($a $b $a $b $a).
+
+	self assert: parser parse: 'ab' to: #($a $b).
+	self assert: parser parse: 'abab' to: #($a $b $a $b).
+	self assert: parser parse: 'ababab' to: #($a $b $a $b $a $b).
+	
+	self assert: parser parse: 'ac' to: #($a) end: 1.
+	self assert: parser parse: 'abc' to: #($a $b) end: 2.
+	self assert: parser parse: 'abac' to: #($a $b $a) end: 3.
+	self assert: parser parse: 'ababc' to: #($a $b $a $b) end: 4.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'b'.
+	self assert: parser fail: 'c'
+!
+
+testDelimitedByWithoutSeparators
+	| parser |
+	parser := ($a asParser delimitedBy: $b asParser)
+		withoutSeparators.
+	
+	self assert: parser parse: 'a' to: #($a).
+	self assert: parser parse: 'aba' to: #($a $a).
+	self assert: parser parse: 'ababa' to: #($a $a $a).
+
+	self assert: parser parse: 'ab' to: #($a).
+	self assert: parser parse: 'abab' to: #($a $a).
+	self assert: parser parse: 'ababab' to: #($a $a $a).
+	
+	self assert: parser parse: 'ac' to: #($a) end: 1.
+	self assert: parser parse: 'abc' to: #($a) end: 2.
+	self assert: parser parse: 'abac' to: #($a $a) end: 3.
+	self assert: parser parse: 'ababc' to: #($a $a) end: 4.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'b'.
+	self assert: parser fail: 'c'
+!
+
+testEndOfInput
+	| parser |
+	parser := PPEndOfInputParser on: $a asParser.
+	self assert: parser end = parser.
+	
+	self assert: parser parse: 'a' to: $a.
+	self assert: parser fail: ''.
+	self assert: parser fail: 'aa'
+!
+
+testEndOfInputAfterMatch
+	| parser |
+	parser := 'stuff' asParser end.
+	self assert: parser parse: 'stuff' to: 'stuff'.
+	self assert: parser fail: 'stufff'.
+	self assert: parser fail: 'fluff'
+!
+
+testEpsilon
+	| parser |
+	parser := nil asParser.
+	
+	self assert: parser parse: '' to: nil.
+	
+	self assert: parser parse: 'a' to: nil end: 0.
+	self assert: parser parse: 'ab' to: nil end: 0
+!
+
+testFailing
+	| parser result |
+	parser := PPFailingParser message: 'Plonk'.
+	self assert: parser message = 'Plonk'.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'a'.
+	self assert: parser fail: 'aa'.
+	
+	result := parser parse: 'a'.
+	self assert: result message = 'Plonk'.
+	self assert: result printString = 'Plonk at 0'
+!
+
+testLiteralObject
+	| parser |
+	parser := PPLiteralObjectParser 
+		on: $a
+		message: 'letter "a" expected'.
+	self assert: parser literal = $a.
+	self assert: parser message = 'letter "a" expected'.
+	
+	self assert: parser parse: 'a' to: $a.
+	self assert: parser fail: 'b'
+	
+!
+
+testLiteralObjectCaseInsensitive
+	| parser |
+	parser := $a asParser caseInsensitive.
+	
+	self assert: parser parse: 'a' to: $a.
+	self assert: parser parse: 'A' to: $A.
+
+	self assert: parser fail: ''.
+	self assert: parser fail: 'b'.
+	self assert: parser fail: 'B'
+	
+!
+
+testLiteralSequence
+	| parser |
+	parser := PPLiteralSequenceParser 
+		on: 'abc'
+		message: 'sequence "abc" expected'.
+	self assert: parser size = 3.
+	self assert: parser literal = 'abc'.
+	self assert: parser message = 'sequence "abc" expected'.
+	
+	self assert: parser parse: 'abc' to: 'abc'.
+	self assert: parser fail: 'ab'.
+	self assert: parser fail: 'abd'
+!
+
+testLiteralSequenceCaseInsensitive
+	| parser |
+	parser := 'abc' asParser caseInsensitive.
+	
+	self assert: parser parse: 'abc' to: 'abc'.
+	self assert: parser parse: 'ABC' to: 'ABC'.
+	self assert: parser parse: 'abC' to: 'abC'.
+	self assert: parser parse: 'AbC' to: 'AbC'.
+	
+	self assert: parser fail: 'ab'.
+	self assert: parser fail: 'abd'
+!
+
+testMax
+	| parser |
+	parser := $a asParser max: 2.
+	self assert: parser min = 0.
+	self assert: parser max = 2.
+
+	self assert: parser parse: '' to: #().
+	self assert: parser parse: 'a' to: #($a).
+	self assert: parser parse: 'aa' to: #($a $a).
+	self assert: parser parse: 'aaa' to: #($a $a) end: 2.
+	self assert: parser parse: 'aaaa' to: #($a $a) end: 2.
+	
+	self assert: (parser printString endsWith: '[0, 2]')
+!
+
+testMaxGreedy
+	| parser |
+	parser := #word asParser max: 2 greedy: #digit asParser.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'abc'.
+	
+	self assert: parser parse: '1' to: #() end: 0.
+	self assert: parser parse: 'a1' to: #($a) end: 1.
+	self assert: parser parse: 'ab1' to: #($a $b) end: 2.
+	self assert: parser fail: 'abc1'.
+	
+	self assert: parser parse: '12' to: #($1) end: 1.
+	self assert: parser parse: 'a12' to: #($a $1) end: 2.
+	self assert: parser parse: 'ab12' to: #($a $b) end: 2.
+	self assert: parser fail: 'abc12'.
+	
+	self assert: parser parse: '123' to: #($1 $2) end: 2.
+	self assert: parser parse: 'a123' to: #($a $1) end: 2.
+	self assert: parser parse: 'ab123' to: #($a $b) end: 2.
+	self assert: parser fail: 'abc123'
+!
+
+testMaxLazy
+	| parser |
+	parser := #word asParser max: 2 lazy: #digit asParser.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'abc'.
+	
+	self assert: parser parse: '1' to: #() end: 0.
+	self assert: parser parse: 'a1' to: #($a) end: 1.
+	self assert: parser parse: 'ab1' to: #($a $b) end: 2.
+	self assert: parser fail: 'abc1'.
+	
+	self assert: parser parse: '12' to: #() end: 0.
+	self assert: parser parse: 'a12' to: #($a) end: 1.
+	self assert: parser parse: 'ab12' to: #($a $b) end: 2.
+	self assert: parser fail: 'abc12'.
+	
+	self assert: parser parse: '123' to: #() end: 0.
+	self assert: parser parse: 'a123' to: #($a) end: 1.
+	self assert: parser parse: 'ab123' to: #($a $b) end: 2.
+	self assert: parser fail: 'abc123'
+!
+
+testMemoized
+	| count parser twice |
+	count := 0.
+	parser := [ :s | count := count + 1. s next ] asParser memoized.
+	twice := parser and , parser.
+	
+	count := 0.
+	self assert: parser parse: 'a' to: $a.
+	self assert: count = 1.
+
+	count := 0.
+	self assert: twice parse: 'a' to: #($a $a).
+	self assert: count = 1.
+	
+	self assert: parser memoized = parser
+!
+
+testMin
+	| parser |
+	parser := $a asParser min: 2.
+	self assert: parser min = 2.
+	self assert: parser max > parser min.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'a'.
+	self assert: parser parse: 'aa' to: #($a $a).
+	self assert: parser parse: 'aaa' to: #($a $a $a).
+	self assert: parser parse: 'aaaa' to: #($a $a $a $a).
+	
+	self assert: (parser printString endsWith: '[2, *]')
+!
+
+testMinGreedy
+	| parser |
+	parser := #word asParser min: 2 greedy: #digit asParser.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'abcde'.
+	
+	self assert: parser fail: '1'.
+	self assert: parser fail: 'a1'.
+	self assert: parser parse: 'ab1' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc1' to: #($a $b $c) end: 3.
+	self assert: parser parse: 'abcd1' to: #($a $b $c $d) end: 4.
+	self assert: parser parse: 'abcde1' to: #($a $b $c $d $e) end: 5.
+	
+	self assert: parser fail: '12'.
+	self assert: parser parse: 'a12' to: #($a $1) end: 2.
+	self assert: parser parse: 'ab12' to: #($a $b $1) end: 3.
+	self assert: parser parse: 'abc12' to: #($a $b $c $1) end: 4.
+	self assert: parser parse: 'abcd12' to: #($a $b $c $d $1) end: 5.
+	self assert: parser parse: 'abcde12' to: #($a $b $c $d $e $1) end: 6.
+	
+	self assert: parser parse: '123' to: #($1 $2) end: 2.
+	self assert: parser parse: 'a123' to: #($a $1 $2) end: 3.
+	self assert: parser parse: 'ab123' to: #($a $b $1 $2) end: 4.
+	self assert: parser parse: 'abc123' to: #($a $b $c $1 $2) end: 5.
+	self assert: parser parse: 'abcd123' to: #($a $b $c $d $1 $2) end: 6.
+	self assert: parser parse: 'abcde123' to: #($a $b $c $d $e $1 $2) end: 7.
+	
+	self assert: parser parse: '1234' to: #($1 $2 $3) end: 3.
+	self assert: parser parse: 'a1234' to: #($a $1 $2 $3) end: 4.
+	self assert: parser parse: 'ab1234' to: #($a $b $1 $2 $3) end: 5.
+	self assert: parser parse: 'abc1234' to: #($a $b $c $1 $2 $3) end: 6.
+	self assert: parser parse: 'abcd1234' to: #($a $b $c $d $1 $2 $3) end: 7.
+	self assert: parser parse: 'abcde1234' to: #($a $b $c $d $e $1 $2 $3) end: 8
+!
+
+testMinLazy
+	| parser |
+	parser := #word asParser min: 2 lazy: #digit asParser.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'abcde'.
+	
+	self assert: parser fail: '1'.
+	self assert: parser fail: 'a1'.
+	self assert: parser parse: 'ab1' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc1' to: #($a $b $c) end: 3.
+	self assert: parser parse: 'abcd1' to: #($a $b $c $d) end: 4.
+	self assert: parser parse: 'abcde1' to: #($a $b $c $d $e) end: 5.
+	
+	self assert: parser fail: '12'.
+	self assert: parser parse: 'a12' to: #($a $1) end: 2.
+	self assert: parser parse: 'ab12' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc12' to: #($a $b $c) end: 3.
+	self assert: parser parse: 'abcd12' to: #($a $b $c $d) end: 4.
+	self assert: parser parse: 'abcde12' to: #($a $b $c $d $e) end: 5.
+	
+	self assert: parser parse: '123' to: #($1 $2) end: 2.
+	self assert: parser parse: 'a123' to: #($a $1) end: 2.
+	self assert: parser parse: 'ab123' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc123' to: #($a $b $c) end: 3.
+	self assert: parser parse: 'abcd123' to: #($a $b $c $d) end: 4.
+	self assert: parser parse: 'abcde123' to: #($a $b $c $d $e) end: 5.
+	
+	self assert: parser parse: '1234' to: #($1 $2) end: 2.
+	self assert: parser parse: 'a1234' to: #($a $1) end: 2.
+	self assert: parser parse: 'ab1234' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc1234' to: #($a $b $c) end: 3.
+	self assert: parser parse: 'abcd1234' to: #($a $b $c $d) end: 4.
+	self assert: parser parse: 'abcde1234' to: #($a $b $c $d $e) end: 5
+!
+
+testMinMax
+	| parser |
+	parser := $a asParser min: 2 max: 4.
+	self assert: parser min = 2.
+	self assert: parser max = 4.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'a'.
+	self assert: parser parse: 'aa' to: #($a $a).
+	self assert: parser parse: 'aaa' to: #($a $a $a).
+	self assert: parser parse: 'aaaa' to: #($a $a $a $a).
+	self assert: parser parse: 'aaaaa' to: #($a $a $a $a) end: 4.
+	self assert: parser parse: 'aaaaaa' to: #($a $a $a $a) end: 4.
+	
+	self assert: (parser printString endsWith: '[2, 4]')
+!
+
+testMinMaxGreedy
+	| parser |
+	parser := #word asParser min: 2 max: 4 greedy: #digit asParser.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'abcde'.
+	
+	self assert: parser fail: '1'.
+	self assert: parser fail: 'a1'.
+	self assert: parser parse: 'ab1' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc1' to: #($a $b $c) end: 3.
+	self assert: parser parse: 'abcd1' to: #($a $b $c $d) end: 4.
+	self assert: parser fail: 'abcde1'.
+	
+	self assert: parser fail: '12'.
+	self assert: parser parse: 'a12' to: #($a $1) end: 2.
+	self assert: parser parse: 'ab12' to: #($a $b $1) end: 3.
+	self assert: parser parse: 'abc12' to: #($a $b $c $1) end: 4.
+	self assert: parser parse: 'abcd12' to: #($a $b $c $d) end: 4.
+	self assert: parser fail: 'abcde12'.
+	
+	self assert: parser parse: '123' to: #($1 $2) end: 2.
+	self assert: parser parse: 'a123' to: #($a $1 $2) end: 3.
+	self assert: parser parse: 'ab123' to: #($a $b $1 $2) end: 4.
+	self assert: parser parse: 'abc123' to: #($a $b $c $1) end: 4.
+	self assert: parser parse: 'abcd123' to: #($a $b $c $d) end: 4.
+	self assert: parser fail: 'abcde123'.
+	
+	self assert: parser parse: '1234' to: #($1 $2 $3) end: 3.
+	self assert: parser parse: 'a1234' to: #($a $1 $2 $3) end: 4.
+	self assert: parser parse: 'ab1234' to: #($a $b $1 $2) end: 4.
+	self assert: parser parse: 'abc1234' to: #($a $b $c $1) end: 4.
+	self assert: parser parse: 'abcd1234' to: #($a $b $c $d) end: 4.
+	self assert: parser fail: 'abcde1234'
+!
+
+testMinMaxLazy
+	| parser |
+	parser := #word asParser min: 2 max: 4 lazy: #digit asParser.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'abcde'.
+	
+	self assert: parser fail: '1'.
+	self assert: parser fail: 'a1'.
+	self assert: parser parse: 'ab1' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc1' to: #($a $b $c) end: 3.
+	self assert: parser parse: 'abcd1' to: #($a $b $c $d) end: 4.
+	self assert: parser fail: 'abcde1'.
+	
+	self assert: parser fail: '12'.
+	self assert: parser parse: 'a12' to: #($a $1) end: 2.
+	self assert: parser parse: 'ab12' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc12' to: #($a $b $c) end: 3.
+	self assert: parser parse: 'abcd12' to: #($a $b $c $d) end: 4.
+	self assert: parser fail: 'abcde12'.
+	
+	self assert: parser parse: '123' to: #($1 $2) end: 2.
+	self assert: parser parse: 'a123' to: #($a $1) end: 2.
+	self assert: parser parse: 'ab123' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc123' to: #($a $b $c) end: 3.
+	self assert: parser parse: 'abcd123' to: #($a $b $c $d) end: 4.
+	self assert: parser fail: 'abcde123'.
+	
+	self assert: parser parse: '1234' to: #($1 $2) end: 2.
+	self assert: parser parse: 'a1234' to: #($a $1) end: 2.
+	self assert: parser parse: 'ab1234' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc1234' to: #($a $b $c) end: 3.
+	self assert: parser parse: 'abcd1234' to: #($a $b $c $d) end: 4.
+	self assert: parser fail: 'abcde1234'
+!
+
+testNegate
+	| parser |
+	parser := 'foo' asParser negate.
+	
+	self assert: parser parse: 'f' to: $f end: 1.
+	self assert: parser parse: 'fo' to: $f end: 1.
+	self assert: parser parse: 'fob' to: $f end: 1.
+	self assert: parser parse: 'ffoo' to: $f end: 1.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'foo'
+!
+
+testNot
+	| parser |
+	parser := 'foo' asParser flatten , 'bar' asParser flatten not.
+	
+	self assert: parser parse: 'foobaz' to: #('foo' nil) end: 3.
+	self assert: parser fail: 'foobar'
+!
+
+testOptional
+	| parser |
+	parser := $a asParser optional.
+	
+	self assert: parser parse: '' to: nil.
+	self assert: parser parse: 'a' to: $a.
+	
+	self assert: parser parse: 'aa' to: $a end: 1.
+	self assert: parser parse: 'ab' to: $a end: 1.
+	self assert: parser parse: 'b' to: nil end: 0.
+	self assert: parser parse: 'bb' to: nil end: 0.
+	self assert: parser parse: 'ba' to: nil end: 0
+!
+
+testPluggable
+	| block parser |
+	block := [ :stream | stream position ].
+	parser := block asParser.
+	self assert: parser block = block
+!
+
+testPlus
+	| parser |
+	parser := $a asParser plus.
+	
+	self assert: parser min = 1.
+	self assert: parser max > parser min.
+	
+	self assert: parser parse: 'a' to: #($a).
+	self assert: parser parse: 'aa' to: #($a $a).
+	self assert: parser parse: 'aaa' to: #($a $a $a).
+	
+	self assert: parser parse: 'ab' to: #($a) end: 1.
+	self assert: parser parse: 'aab' to: #($a $a) end: 2.
+	self assert: parser parse: 'aaab' to: #($a $a $a) end: 3.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'b'.
+	self assert: parser fail: 'ba'
+!
+
+testPlusGreedy
+	| limit parser |
+	limit := #digit asParser.
+	parser := #word asParser plusGreedy: limit.
+	
+	self assert: parser min = 1.
+	self assert: parser max > parser min.	
+	self assert: parser limit = limit.
+	self assert: parser children size = 2.
+	self assert: parser children last = limit.
+
+	self assert: parser fail: ''.
+	self assert: parser fail: '1'.
+	self assert: parser fail: 'a'.
+	self assert: parser fail: 'ab'.
+
+	self assert: parser parse: 'a1' to: #($a) end: 1.
+	self assert: parser parse: 'ab1' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc1' to: #($a $b $c) end: 3.
+	self assert: parser parse: 'a12' to: #($a $1) end: 2.
+	self assert: parser parse: 'ab12' to: #($a $b $1) end: 3.
+	self assert: parser parse: 'abc12' to: #($a $b $c $1) end: 4.
+	self assert: parser parse: 'a123' to: #($a $1 $2) end: 3.
+	self assert: parser parse: 'ab123' to: #($a $b $1 $2) end: 4.
+	self assert: parser parse: 'abc123' to: #($a $b $c $1 $2) end: 5.
+!
+
+testPlusLazy
+	| limit parser |
+	limit := #digit asParser.
+	parser := #word asParser plusLazy: limit.
+	
+	self assert: parser min = 1.
+	self assert: parser max > parser min.	
+	self assert: parser limit = limit.
+	self assert: parser children size = 2.
+	self assert: parser children last = limit.
+
+	self assert: parser fail: ''.
+	self assert: parser fail: '1'.
+	self assert: parser fail: 'a'.
+	self assert: parser fail: 'ab'.
+
+	self assert: parser parse: 'a1' to: #($a) end: 1.
+	self assert: parser parse: 'ab1' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc1' to: #($a $b $c) end: 3.
+	self assert: parser parse: 'a12' to: #($a) end: 1.
+	self assert: parser parse: 'ab12' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc12' to: #($a $b $c) end: 3.
+	self assert: parser parse: 'a123' to: #($a) end: 1.
+	self assert: parser parse: 'ab123' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc123' to: #($a $b $c) end: 3
+!
+
+testSeparatedBy
+	| parser |
+	parser := $a asParser separatedBy: $b asParser.
+	
+	self assert: parser parse: 'a' to: #($a).
+	self assert: parser parse: 'aba' to: #($a $b $a).
+	self assert: parser parse: 'ababa' to: #($a $b $a $b $a).
+	
+	self assert: parser parse: 'ab' to: #($a) end: 1.
+	self assert: parser parse: 'abab' to: #($a $b $a) end: 3.
+	self assert: parser parse: 'ac' to: #($a) end: 1.
+	self assert: parser parse: 'abac' to: #($a $b $a) end: 3.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'c'
+!
+
+testSeparatedByWithoutSeparators
+	| parser |
+	parser := ($a asParser separatedBy: $b asParser)
+		withoutSeparators.
+	
+	self assert: parser parse: 'a' to: #($a).
+	self assert: parser parse: 'aba' to: #($a $a).
+	self assert: parser parse: 'ababa' to: #($a $a $a).
+	
+	self assert: parser parse: 'ab' to: #($a) end: 1.
+	self assert: parser parse: 'abab' to: #($a $a) end: 3.
+	self assert: parser parse: 'ac' to: #($a) end: 1.
+	self assert: parser parse: 'abac' to: #($a $a) end: 3.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'c'
+!
+
+testSequence
+	| parser |
+	parser := $a asParser , $b asParser.
+	
+	self assert: parser parse: 'ab' to: #($a $b).
+	
+	self assert: parser parse: 'aba' to: #($a $b) end: 2.
+	self assert: parser parse: 'abb' to: #($a $b) end: 2.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'a'.
+	self assert: parser fail: 'aa'.
+	self assert: parser fail: 'ba'.
+	self assert: parser fail: 'bab'
+!
+
+testStar
+	| parser |
+	parser := $a asParser star.
+	
+	self assert: parser min = 0.
+	self assert: parser max > parser min.
+	
+	self assert: parser parse: '' to: #().
+	self assert: parser parse: 'a' to: #($a).
+	self assert: parser parse: 'aa' to: #($a $a).
+	self assert: parser parse: 'aaa' to: #($a $a $a).
+	
+	self assert: parser parse: 'b' to: #() end: 0.
+	self assert: parser parse: 'ab' to: #($a) end: 1.
+	self assert: parser parse: 'aab' to: #($a $a) end: 2.
+	self assert: parser parse: 'aaab' to: #($a $a $a) end: 3
+!
+
+testStarGreedy
+	| limit parser |
+	limit := #digit asParser.
+	parser := #word asParser starGreedy: limit.
+	
+	self assert: parser min = 0.
+	self assert: parser max > parser min.
+	self assert: parser limit = limit.
+	self assert: parser children size = 2.
+	self assert: parser children last = limit.
+
+	self assert: parser fail: ''.
+	self assert: parser fail: 'a'.
+	self assert: parser fail: 'ab'.
+
+	self assert: parser parse: '1' to: #() end: 0.
+	self assert: parser parse: 'a1' to: #($a) end: 1.
+	self assert: parser parse: 'ab1' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc1' to: #($a $b $c) end: 3.
+	self assert: parser parse: '12' to: #($1) end: 1.
+	self assert: parser parse: 'a12' to: #($a $1) end: 2.
+	self assert: parser parse: 'ab12' to: #($a $b $1) end: 3.
+	self assert: parser parse: 'abc12' to: #($a $b $c $1) end: 4.
+	self assert: parser parse: '123' to: #($1 $2) end: 2.
+	self assert: parser parse: 'a123' to: #($a $1 $2) end: 3.
+	self assert: parser parse: 'ab123' to: #($a $b $1 $2) end: 4.
+	self assert: parser parse: 'abc123' to: #($a $b $c $1 $2) end: 5
+!
+
+testStarLazy
+	| limit parser |
+	limit := #digit asParser.
+	parser := #word asParser starLazy: limit.
+	
+	self assert: parser min = 0.
+	self assert: parser max > parser min.
+	self assert: parser limit = limit.
+	self assert: parser children size = 2.
+	self assert: parser children last = limit.
+
+	self assert: parser fail: ''.
+	self assert: parser fail: 'a'.
+	self assert: parser fail: 'ab'.
+
+	self assert: parser parse: '1' to: #() end: 0.
+	self assert: parser parse: 'a1' to: #($a) end: 1.
+	self assert: parser parse: 'ab1' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc1' to: #($a $b $c) end: 3.
+	self assert: parser parse: '12' to: #() end: 0.
+	self assert: parser parse: 'a12' to: #($a) end: 1.
+	self assert: parser parse: 'ab12' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc12' to: #($a $b $c) end: 3.
+	self assert: parser parse: '123' to: #() end: 0.
+	self assert: parser parse: 'a123' to: #($a) end: 1.
+	self assert: parser parse: 'ab123' to: #($a $b) end: 2.
+	self assert: parser parse: 'abc123' to: #($a $b $c) end: 3
+!
+
+testTimes
+	| parser |
+	parser := $a asParser times: 2.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'a'.
+	self assert: parser parse: 'aa' to: #($a $a).
+	self assert: parser parse: 'aaa' to: #($a $a) end: 2
+!
+
+testUnresolved
+	| parser |
+	parser := PPUnresolvedParser new.
+	
+	self assert: parser isUnresolved.
+	self should: [ parser parse: '' ] raise: Error.
+	self should: [ parser parse: 'a' ] raise: Error.
+	self should: [ parser parse: 'ab' ] raise: Error.
+	
+	parser := nil asParser.
+	self deny: parser isUnresolved
+!
+
+testWrapped
+	| parser |
+	parser := $a asParser wrapped.
+	
+	self assert: parser parse: 'a' to: $a.
+	self assert: parser fail: 'b'.
+	
+	parser := (($a asParser , $b asParser ) wrapped , $c asParser).
+	self assert: parser parse: 'abc' to: #(#($a $b) $c)
+!
+
+testXor
+	| parser |
+	parser := ($a asParser / $b asParser)
+			|  ($b asParser / $c asParser).
+	
+	self assert: parser parse: 'a' to: $a.
+	self assert: parser parse: 'c' to: $c.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'b'.
+	self assert: parser fail: 'd'.
+	
+	" truly symmetric "
+	parser := ($b asParser / $c asParser)
+			|  ($a asParser / $b asParser).
+	
+	self assert: parser parse: 'a' to: $a.
+	self assert: parser parse: 'c' to: $c.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'b'.
+	self assert: parser fail: 'd'
+! !
+
+!PPParserTest methodsFor:'testing-accessing'!
+
+testNamed
+	| parser |
+	parser := PPSequenceParser new.
+	self assert: parser name isNil.
+	
+	parser := PPChoiceParser named: 'choice'.
+	self assert: parser name = 'choice'.
+	
+	parser := $* asParser name: 'star'.
+	self assert: parser name = 'star'
+!
+
+testPrint
+	| parser |
+	parser := PPParser new.
+	self assert: (parser printString findString: 'PPParser') > 0.
+	
+	parser := PPParser named: 'choice'.
+	self assert: (parser printString findString: 'PPParser(choice') > 0.
+	
+	parser := PPLiteralObjectParser on: $a.
+	self assert: (parser printString findString: '$a') > 0.
+	
+	parser := PPFailingParser message: 'error'.
+	self assert: (parser printString findString: 'error') > 0.
+	
+	parser := PPPredicateObjectParser on: [ :c | true ] message: 'error'.
+	self assert: (parser printString findString: 'error') > 0
+! !
+
+!PPParserTest methodsFor:'testing-fixtures'!
+
+testSideEffectChoice
+	"Adding another element to a choice should create a copy, otherwise we get unwanted side-effects."
+
+	| p1 p2 p3 |
+	p1 := $a asParser.
+	p2 := p1 / $b asParser.
+	p3 := p1 / $c asParser.
+	
+	self assert: p1 parse: 'a'.
+	self assert: p1 fail: 'b'.
+	self assert: p1 fail: 'c'.
+	
+	self assert: p2 parse: 'a'.
+	self assert: p2 parse: 'b'.
+	self assert: p2 fail: 'c'.
+	
+	self assert: p3 parse: 'a'.
+	self assert: p3 fail: 'b'.
+	self assert: p3 parse: 'c'
+!
+
+testSideEffectListCopy
+	| old new |
+	old := $a asParser , $b asParser.
+	new := old copy.
+	
+	self deny: old == new.
+	self deny: old children == new children.
+	self assert: old children first == new children first.
+	self assert: old children last == new children last
+!
+
+testSideEffectSequence
+	"Adding another element to a sequence should create a copy, otherwise we get unwanted side-effects."
+
+	| p1 p2 p3 |
+	p1 := $a asParser.
+	p2 := p1 , $b asParser.
+	p3 := p1 , $c asParser.
+	
+	self assert: p1 parse: 'a'.	
+	self assert: p1 parse: 'ab' end: 1.
+	self assert: p1 parse: 'ac' end: 1.
+	
+	self assert: p2 fail: 'a'.	
+	self assert: p2 parse: 'ab'.
+	self assert: p2 fail: 'ac'.
+
+	self assert: p3 fail: 'a'.	
+	self assert: p3 fail: 'ab'.
+	self assert: p3 parse: 'ac'
+! !
+
+!PPParserTest methodsFor:'testing-mapping'!
+
+testAction
+	| block parser |
+	block := [ :char | char asUppercase ].
+	parser := #any asParser ==> block.
+	self assert: parser block = block.
+
+	self assert: parser parse: 'a' to: $A.
+	self assert: parser parse: 'b' to: $B
+!
+
+testAnswer
+	| parser |
+	parser := $a asParser answer: $b.
+	
+	self assert: parser parse: 'a' to: $b.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'b'
+!
+
+testFlatten
+	| parser |
+	parser := $a asParser flatten.
+	
+	self assert: parser parse: 'a' to: 'a'.
+	self assert: parser parse: #($a) to: #($a).
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'b'
+!
+
+testFoldLeft2
+	| parser |
+	parser := #any asParser star 
+		foldLeft: [ :a :b | Array with: a with: b ].
+
+	self assert: parser parse: #(a) to: #a.
+	self assert: parser parse: #(a b) to: #(a b).
+	self assert: parser parse: #(a b c) to: #((a b) c).
+	self assert: parser parse: #(a b c d) to: #(((a b) c) d).
+	self assert: parser parse: #(a b c d e) to: #((((a b) c) d) e)
+!
+
+testFoldLeft3
+	| parser |
+	parser := #any asParser star 
+		foldLeft: [ :a :b :c | Array with: a with: b with: c ].
+
+	self assert: parser parse: #(a) to: #a.
+	self assert: parser parse: #(a b c) to: #(a b c).
+	self assert: parser parse: #(a b c d e) to: #((a b c) d e)
+!
+
+testFoldRight2
+	| parser |
+	parser := #any asParser star 
+		foldRight: [ :a :b | Array with: a with: b ].
+
+	self assert: parser parse: #(a) to: #a.
+	self assert: parser parse: #(a b) to: #(a b).
+	self assert: parser parse: #(a b c) to: #(a (b c)).
+	self assert: parser parse: #(a b c d) to: #(a (b (c d))).
+	self assert: parser parse: #(a b c d e) to: #(a (b (c (d e))))
+!
+
+testFoldRight3
+	| parser |
+	parser := #any asParser star 
+		foldRight: [ :a :b :c | Array with: a with: b with: c ].
+
+	self assert: parser parse: #(a) to: #a.
+	self assert: parser parse: #(a b c) to: #(a b c).
+	self assert: parser parse: #(a b c d e) to: #(a b (c d e))
+!
+
+testMap1
+	| parser |
+	parser := #any asParser 
+		map: [ :a | Array with: a ].
+
+	self assert: parser parse: #(a) to: #(a)
+!
+
+testMap2
+	| parser |
+	parser := (#any asParser , #any asParser) 
+		map: [ :a :b | Array with: b with: a ].
+
+	self assert: parser parse: #(a b) to: #(b a)
+!
+
+testMap3
+	| parser |
+	parser := (#any asParser , #any asParser , #any asParser)
+		map: [ :a :b :c | Array with: c with: b with: a ].
+
+	self assert: parser parse: #(a b c) to: #(c b a)
+!
+
+testMapFail1
+	self
+		should: [ #any asParser map: [  ] ]
+		raise: Error.
+	self
+		should: [ #any asParser map: [ :a :b | ] ]
+		raise: Error
+!
+
+testMapFail2
+	self
+		should: [ (#any asParser , #any asParser) map: [ :a | ] ]
+		raise: Error.
+	self
+		should: [ (#any asParser , #any asParser) map: [ :a :b :c | ] ]
+		raise: Error
+!
+
+testPermutation
+	| parser |
+	parser := #any asParser , #any asParser , #any asParser.
+
+	self assert: (parser permutation: #()) parse: '123' to: #().
+	self assert: (parser permutation: #(1)) parse: '123' to: #($1).
+	self assert: (parser permutation: #(1 3)) parse: '123' to: #($1 $3).
+	self assert: (parser permutation: #(3 1)) parse: '123' to: #($3 $1).
+	self assert: (parser permutation: #(2 2)) parse: '123' to: #($2 $2).
+	self assert: (parser permutation: #(3 2 1)) parse: '123' to: #($3 $2 $1).
+	
+	self should: [ parser permutation: #(0) ] raise: Error.
+	self should: [ parser permutation: #(4) ] raise: Error.
+	self should: [ parser permutation: #($2) ] raise: Error
+!
+
+testToken
+	| parser |
+	parser := $a asParser token.
+	self assert: parser tokenClass = PPToken.
+	self assert: parser parse: 'a' toToken: 1 stop: 1.	
+	self assert: parser fail: 'b'.
+	self assert: parser fail: ''.
+	
+	parser := $a asParser token: PPToken.
+	self assert: parser tokenClass = PPToken.
+	self assert: parser parse: 'a' toToken: 1 stop: 1.	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'b'
+!
+
+testTrim
+	| parser |
+	parser := $a asParser token trim.
+	
+	self assert: parser parse: 'a' toToken: 1 stop: 1.
+	self assert: parser parse: 'a ' toToken: 1 stop: 1.
+	self assert: parser parse: 'a	' toToken: 1 stop: 1.
+	self assert: parser parse: 'a  ' toToken: 1 stop: 1.
+	self assert: parser parse: 'a 
+	 ' toToken: 1 stop: 1.
+		
+	self assert: parser parse: 'a' toToken: 1 stop: 1.
+	self assert: parser parse: ' a' toToken: 2 stop: 2.
+	self assert: parser parse: '	a' toToken: 2 stop: 2.
+	self assert: parser parse: '    a' toToken: 5 stop: 5.
+	self assert: parser parse: '   
+a' toToken: 5 stop: 5.
+	
+	self assert: parser parse: 'aa' toToken: 1 stop: 1 end: 1.
+	self assert: parser parse: 'a	a' toToken: 1 stop: 1 end: 2.
+	self assert: parser parse: 'a  a' toToken: 1 stop: 1 end: 3.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'b'
+!
+
+testTrimBlanks
+	| parser |
+	parser := $a asParser token trimBlanks.
+	
+	self assert: parser parse: 'a' toToken: 1 stop: 1.
+	self assert: parser parse: 'a ' toToken: 1 stop: 1.
+	self assert: parser parse: 'a	' toToken: 1 stop: 1.
+	self assert: parser parse: 'a  ' toToken: 1 stop: 1.
+	
+	self assert: parser parse: 'a' toToken: 1 stop: 1.
+	self assert: parser parse: ' a' toToken: 2 stop: 2.
+	self assert: parser parse: '	a' toToken: 2 stop: 2.
+	self assert: parser parse: '    a' toToken: 5 stop: 5.
+	
+	self assert: parser parse: 'aa' toToken: 1 stop: 1 end: 1.
+	self assert: parser parse: 'a	a' toToken: 1 stop: 1 end: 2.
+	self assert: parser parse: 'a  a' toToken: 1 stop: 1 end: 3.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: '
+'.
+	self assert: parser fail: '
+a'.
+	self assert: parser fail: 'b'.
+!
+
+testTrimCustom
+	| parser |
+	parser := $a asParser token trim: $b asParser.
+	
+	self assert: parser parse: 'a' toToken: 1 stop: 1.
+	self assert: parser parse: 'ab' toToken: 1 stop: 1.
+	self assert: parser parse: 'abb' toToken: 1 stop: 1.
+		
+	self assert: parser parse: 'a' toToken: 1 stop: 1.
+	self assert: parser parse: 'ba' toToken: 2 stop: 2.
+	self assert: parser parse: 'bba' toToken: 3 stop: 3.
+	
+	self assert: parser parse: 'aa' toToken: 1 stop: 1 end: 1.
+	self assert: parser parse: 'ab' toToken: 1 stop: 1 end: 2.
+	self assert: parser parse: 'abba' toToken: 1 stop: 1 end: 3.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'b'
+!
+
+testTrimSpaces
+	| parser |
+	parser := $a asParser token trimSpaces.
+	
+	self assert: parser parse: 'a' toToken: 1 stop: 1.
+	self assert: parser parse: 'a ' toToken: 1 stop: 1.
+	self assert: parser parse: 'a	' toToken: 1 stop: 1.
+	self assert: parser parse: 'a  ' toToken: 1 stop: 1.
+	self assert: parser parse: 'a 
+	 ' toToken: 1 stop: 1.
+		
+	self assert: parser parse: 'a' toToken: 1 stop: 1.
+	self assert: parser parse: ' a' toToken: 2 stop: 2.
+	self assert: parser parse: '	a' toToken: 2 stop: 2.
+	self assert: parser parse: '    a' toToken: 5 stop: 5.
+	self assert: parser parse: '   
+a' toToken: 5 stop: 5.
+	
+	self assert: parser parse: 'aa' toToken: 1 stop: 1 end: 1.
+	self assert: parser parse: 'a	a' toToken: 1 stop: 1 end: 2.
+	self assert: parser parse: 'a  a' toToken: 1 stop: 1 end: 3.
+	
+	self assert: parser fail: ''.
+	self assert: parser fail: 'b'
+!
+
+testWrapping
+	| parser result |
+	parser := #digit asParser plus >=> [ :stream :cc | 
+		Array 
+			with: stream position 
+			with: cc value 
+			with: stream position ].
+
+	self assert: parser parse: '1' to: #(0 ($1) 1).
+	self assert: parser parse: '12' to: #(0 ($1 $2) 2).
+	self assert: parser parse: '123' to: #(0 ($1 $2 $3) 3).
+	
+	result := parser parse: 'a'.
+	self assert: result first = 0.
+	self assert: result second isPetitFailure.
+	self assert: result last = 0
+! !
+
+!PPParserTest methodsFor:'testing-properties'!
+
+testHasProperty
+	| parser |
+	parser := PPParser new.
+	self deny: (parser hasProperty: #foo).
+	parser propertyAt: #foo put: 123.
+	self assert: (parser hasProperty: #foo)
+!
+
+testPostCopy
+	| parser copy |
+	parser := PPParser new.
+	parser propertyAt: #foo put: true.
+	copy := parser copy.
+	copy propertyAt: #foo put: false.
+	self assert: (parser propertyAt: #foo).
+	self deny: (copy propertyAt: #foo)
+!
+
+testPropertyAt
+	| parser |
+	parser := PPParser new.
+	self should: [ parser propertyAt: #foo ] raise: Error.
+	parser propertyAt: #foo put: true.
+	self assert: (parser propertyAt: #foo)
+!
+
+testPropertyAtIfAbsent
+	| parser |
+	parser := PPParser new.
+	self assert: (parser propertyAt: #foo ifAbsent: [ true ]).
+	parser propertyAt: #foo put: true.
+	self assert: (parser propertyAt: #foo ifAbsent: [ false ])
+!
+
+testPropertyAtIfAbsentPut
+	| parser |
+	parser := PPParser new.
+	self assert: (parser propertyAt: #foo ifAbsentPut: [ true ]).
+	self assert: (parser propertyAt: #foo ifAbsentPut: [ false ])
+!
+
+testRemoveProperty
+	| parser |
+	parser := PPParser new.
+	self should: [ parser removeProperty: #foo ] raise: Error.
+	parser propertyAt: #foo put: true.
+	self assert: (parser removeProperty: #foo)
+!
+
+testRemovePropertyIfAbsent
+	| parser |
+	parser := PPParser new.
+	self assert: (parser removeProperty: #foo ifAbsent: [ true ]).
+	parser propertyAt: #foo put: true.
+	self assert: (parser removeProperty: #foo ifAbsent: [ false ])
+! !
+
+!PPParserTest methodsFor:'testing-utilities'!
+
+testChildren
+	| p1 p2 p3 |
+	p1 := #lowercase asParser.
+	p2 := p1 ==> #asUppercase.
+	p3 := PPUnresolvedParser new.
+	p3 def: p2 / p3.
+	self assert: p1 children isEmpty.
+	self assert: p2 children size = 1.
+	self assert: p3 children size = 2
+!
+
+testFailure
+	| failure |
+	failure := PPFailure message: 'Error' at: 3.
+	
+	self assert: failure message = 'Error'.
+	self assert: failure position = 3.
+	self assert: failure isPetitFailure.
+
+	self deny: 4 isPetitFailure.
+	self deny: 'foo' isPetitFailure
+!
+
+testListConstructor
+	| p1 p2 p3 |
+	p1 := PPChoiceParser with: $a asParser.
+	p2 := PPChoiceParser with: $a asParser with: $b asParser.
+	p3 := PPChoiceParser withAll: (Array with: $a asParser with: $b asParser with: $c asParser).
+	
+	self assert: p1 children size = 1.
+	self assert: p2 children size = 2.
+	self assert: p3 children size = 3
+!
+
+testMatches
+	| parser |
+	parser := $a asParser.
+	
+	self assert: (parser matches: 'a').
+	self deny: (parser matches: 'b').
+	
+	self assert: (parser matches: 'a' readStream).
+	self deny: (parser matches: 'b' readStream)
+!
+
+testMatchesIn
+	| parser result |
+	parser := $a asParser.
+	
+	result := parser matchesIn: 'abba'.
+	self assert: result size = 2.
+	self assert: result first = $a.
+	self assert: result last = $a.
+	
+	result := parser matchesIn: 'baaah'.
+	self assert: result size = 3.
+	self assert: result first = $a.
+	self assert: result last = $a
+!
+
+testMatchesInEmpty
+	"Empty matches should properly advance and match at each position and at the end."
+
+	| parser result |
+	parser := [ :stream | stream position ] asParser.
+	
+	result := parser matchesIn: '123'.
+	self assert: result asArray = #(0 1 2 3)
+!
+
+testMatchesInOverlapping
+	"Matches that overlap should be properly reported."
+
+	| parser result |
+	parser := #digit asParser , #digit asParser.
+	
+	result := parser matchesIn: 'a123b'.
+	self assert: result size = 2.
+	self assert: result first = #($1 $2).
+	self assert: result last = #($2 $3)
+!
+
+testMatchesSkipIn
+	| parser result |
+	parser := $a asParser.
+	
+	result := parser matchesSkipIn: 'abba'.
+	self assert: result size = 2.
+	self assert: result first = $a.
+	self assert: result last = $a.
+	
+	result := parser matchesSkipIn: 'baaah'.
+	self assert: result size = 3.
+	self assert: result first = $a.
+	self assert: result last = $a
+!
+
+testMatchesSkipInOverlapping
+	"Matches that overlap should be properly reported."
+
+	| parser result |
+	parser := #digit asParser , #digit asParser.
+	
+	result := parser matchesSkipIn: 'a123b'.
+	self assert: result size = 1.
+	self assert: result first = #($1 $2)
+!
+
+testMatchingRangesIn
+	| input parser result |
+	input := 'a12b3'.
+	parser := #digit asParser plus.
+	result := parser matchingRangesIn: input.
+	result := result collect: [ :each | input copyFrom: each first to: each last ].
+	self assert: result size = 3.
+	self assert: result first = '12'.
+	self assert: result second = '2'.
+	self assert: result last = '3'
+!
+
+testMatchingSkipRangesIn
+	| input parser result |
+	input := 'a12b3'.
+	parser := #digit asParser plus.
+	result := parser matchingSkipRangesIn: input.
+	result := result collect: [ :each | input copyFrom: each first to: each last ].
+	self assert: result size = 2.
+	self assert: result first = '12'.
+	self assert: result last = '3'
+!
+
+testParse
+	| parser result |
+	parser := $a asParser.
+	
+	self assert: (parser parse: 'a') = $a.
+	self assert: (result := parser parse: 'b') isPetitFailure.
+	self assert: (result message findString: '$a') > 0.
+	self assert: (result message findString: 'expected') > 0.
+	self assert: (result position = 0).
+	
+	self assert: (parser parse: 'a' readStream) = $a.
+	self assert: (result := parser parse: 'b' readStream) isPetitFailure.
+	self assert: (result message findString: '$a') > 0.
+	self assert: (result message findString: 'expected') > 0.
+	self assert: (result position = 0)
+!
+
+testParseOnError0
+	| parser result seen |
+	parser := $a asParser.
+
+	result := parser parse: 'a' onError: [ self signalFailure: 'Not supposed to report an error' ].
+	self assert: result = $a.
+
+	result := parser parse: 'b' onError: [ seen := true ].
+	self assert: result.
+	self assert: seen
+!
+
+testParseOnError1
+	| parser result seen |
+	parser := $a asParser.
+
+	result := parser parse: 'a' onError: [ self signalFailure: 'Not supposed to report an error' ].
+	self assert: result = $a.
+	
+	result := parser parse: 'b' onError: [ :failure | 
+		self assert: (failure position = 0).
+		self assert: (failure message findString: '$a') > 0.
+		self assert: (failure message findString: 'expected') > 0.
+		seen := true ].
+	self assert: result.
+	self assert: seen
+!
+
+testParseOnError2
+	| parser result seen |
+	parser := $a asParser.
+	
+	result := parser parse: 'a' onError: [ self signalFailure: 'Not supposed to report an error' ].
+	self assert: result = $a.
+
+	result := parser parse: 'b' onError: [ :msg :pos | 
+		self assert: (msg findString: '$a') > 0.
+		self assert: (msg findString: 'expected') > 0.
+		self assert: pos = 0.
+		seen := true ].
+	self assert: result.
+	self assert: seen
+!
+
+testParser
+	| parser |
+	parser := PPParser new.
+	
+	self assert: parser isPetitParser.
+
+	self deny: 4 isPetitParser.
+	self deny: 'foo' isPetitParser
+! !
+
+!PPParserTest class methodsFor:'documentation'!
+
+version
+    ^ '$Header$'
+!
+
+version_CVS
+    ^ '$Header$'
+! !
+