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"{ Package: 'exept:regression' }"
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"{ NameSpace: RegressionTests }"
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TestCase subclass:#ScaledDecimalTest
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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category:'tests-Regression'
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!
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!ScaledDecimalTest methodsFor:'tests'!
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testAsNumber
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"Ensure no loss of precision"
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| sd |
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sd := '1.40s2' asNumber.
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self assert: (ScaledDecimal ? FixedPoint) == sd class.
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self assert: sd scale == 2.
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Smalltalk isSmalltalkX ifTrue:[
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self assert: '1.40' = sd printString.
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self assert: '1.40s2' = sd storeString.
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] ifFalse:[
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self assert: '1.40s2' = sd printString.
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]
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!
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testAsNumberNegatedWithoutDecimalPoint
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| sd |
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sd := '-123s0' asNumber.
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self assert: (ScaledDecimal ? FixedPoint) == sd class.
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self assert: sd scale == 0.
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Smalltalk isSmalltalkX ifTrue:[
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self assert: '-123' = sd printString.
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self assert: '-123s0' = sd storeString.
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] ifFalse:[
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self assert: '-123s0' = sd printString.
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]
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!
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testAsNumberNegatedWithoutDecimalPoint2
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| sd |
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sd := '-123s2' asNumber.
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self assert: (ScaledDecimal ? FixedPoint) == sd class.
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self assert: sd scale == 2.
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Smalltalk isSmalltalkX ifTrue:[
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self assert: '-123.00' = sd printString.
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self assert: '-123.00s2' = sd storeString.
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] ifFalse:[
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self assert: '-123.00s2' = sd printString.
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]
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!
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testAsNumberWithExtendedScale
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| sd |
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sd := '123s2' asNumber.
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self assert: (ScaledDecimal ? FixedPoint) == sd class.
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self assert: sd scale == 2.
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Smalltalk isSmalltalkX ifTrue:[
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self assert: '123.00' = sd printString.
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self assert: '123.00s2' = sd storeString.
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] ifFalse:[
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self assert: '123.00s2' = sd printString.
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]
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!
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testAsNumberWithRadix
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| sd |
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sd := '10r-22.2s5' asNumber.
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self assert: (ScaledDecimal ? FixedPoint) == sd class.
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self assert: sd scale == 5.
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Smalltalk isSmalltalkX ifTrue:[
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self assert: '-22.20000' = sd printString.
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self assert: '-22.20000s5' = sd storeString.
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] ifFalse:[
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self assert: '-22.20000s5' = sd printString.
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]
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!
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testAsNumberWithSuperfluousDecimalPoint
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| sd |
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sd := '123.s2' asNumber.
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self assert: (ScaledDecimal ? FixedPoint) == sd class.
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self assert: sd scale == 2.
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Smalltalk isSmalltalkX ifTrue:[
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self assert: '123.00' = sd printString.
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self assert: '123.00s2' = sd storeString.
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] ifFalse:[
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self assert: '123.00s2' = sd printString.
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]
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!
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testAsNumberWithoutDecimalPoint
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| sd |
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sd := '123s0' asNumber.
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self assert: (ScaledDecimal ? FixedPoint) == sd class.
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self assert: sd scale == 0.
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Smalltalk isSmalltalkX ifTrue:[
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self assert: '123' = sd printString.
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self assert: '123s0' = sd storeString.
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] ifFalse:[
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self assert: '123s0' = sd printString.
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]
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!
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testAsNumberWithoutDecimalPoint2
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| sd |
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sd := '123s2' asNumber.
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self assert: (ScaledDecimal ? FixedPoint) == sd class.
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self assert: sd scale == 2.
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Smalltalk isSmalltalkX ifTrue:[
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self assert: '123.00' = sd printString.
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self assert: '123.00s2' = sd storeString.
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] ifFalse:[
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self assert: '123.00s2' = sd printString.
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]
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!
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testConvertFromFloat
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| aFloat sd f2 diff |
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aFloat := 11/13 asFloat.
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sd := aFloat asScaledDecimal: 2.
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self assert: 2 == sd scale.
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Smalltalk isSmalltalkX ifTrue:[
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self assert: '0.85' = sd printString.
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] ifFalse:[
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self assert: '0.84s2' = sd printString.
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].
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f2 := sd asFloat.
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diff := f2 - aFloat.
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self assert: diff < 1.0e-9. "actually, f = f2, but this is not a requirement"
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!
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testConvertFromFraction
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| sd |
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sd := (13 / 11) asScaledDecimal: 6.
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self assert: (ScaledDecimal ? FixedPoint) == sd class.
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Smalltalk isSmalltalkX ifTrue:[
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self assert: ('1.181818' = sd printString).
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] ifFalse:[
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self assert: ('1.181818s6' = sd printString).
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].
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self assert: 6 == sd scale
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!
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testConvertFromInteger
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"Converting an Integer to a ScaledDecimal yields a ScaledDecimal with
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scale 0, regardless of the scale specified in the #asScaledDecimal: message."
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| sd |
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Smalltalk isSmalltalkX ifTrue:[
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"/ I think this behavior is wrong.
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^ self.
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].
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sd := 13 asScaledDecimal: 6.
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self assert: 0 = sd scale.
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self assert: ('13s0' = sd printString).
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sd := -13 asScaledDecimal: 6.
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self assert: 0 = sd scale.
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self assert: ('-13s0' = sd printString).
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sd := 130000000013 asScaledDecimal: 6.
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self assert: 0 = sd scale.
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self assert: ('130000000013s0' = sd printString).
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sd := -130000000013 asScaledDecimal: 6.
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self assert: 0 = sd scale.
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self assert: ('-130000000013s0' = sd printString)
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!
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testLiteral
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| sd |
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sd := 1.40s2.
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self assert: (ScaledDecimal ? FixedPoint) == sd class.
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self assert: sd scale == 2.
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Smalltalk isSmalltalkX ifTrue:[
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self assert: '1.40' = sd printString.
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self assert: '1.40s2' = sd storeString.
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] ifFalse:[
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self assert: '1.40s2' = sd printString.
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].
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!
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testPrintString
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"The printed representation of a ScaledDecimal is truncated, not rounded.
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Not sure if this is right, so this test describes the current Squeak implementation.
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If someone knows a reason that rounding would be preferable, then update
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this test."
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| sd |
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sd := (13 / 11) asScaledDecimal: 6.
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Smalltalk isSmalltalkX ifTrue:[
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self assert: ('1.181818' = sd printString).
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] ifFalse:[
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self assert: ('1.181818s6' = sd printString).
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].
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sd := (13 / 11) asScaledDecimal: 5.
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Smalltalk isSmalltalkX ifTrue:[
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self assert: ('1.18182' = sd printString).
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] ifFalse:[
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self deny: ('1.18182s5' = sd printString).
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].
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sd := (13 / 11) asScaledDecimal: 5.
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Smalltalk isSmalltalkX ifTrue:[
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self deny: ('1.18181' = sd printString).
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] ifFalse:[
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self assert: ('1.18181s5' = sd printString).
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].
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!
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testStoreAndRead
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|check|
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check := [:originalNum |
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|s readNum|
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s := originalNum storeString.
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readNum := Number readFrom:s.
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self assert:readNum = originalNum.
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].
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check value:((FixedPoint fromString:'0.66666666') ).
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check value:((FixedPoint fromString:'0.66666666') withScale:2 ).
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check value:((FixedPoint fromString:'1.5') ).
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check value:((FixedPoint fromString:'1.5') withScale:2 ).
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check value:((FixedPoint fromString:'1.5') withScale:1 ).
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check value:((FixedPoint fromString:'1.5') withScale:0 ).
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! !
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!ScaledDecimalTest class methodsFor:'documentation'!
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version
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^ '$Header$'
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! !
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