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StackBuilderTest.class.st
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StackBuilderTest.class.st
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"
This class contains tests for the StackBuilder.
builder <StackBuilder> stack builder used during the tests.
The following IVs are used to test that the stack is ordered correctly in their tests.
(see protocol #test-order)
stackElement1
stackElement2
instructionPointer
receiver
context
temp1
temp2
method
"
Class {
#name : #StackBuilderTest,
#superclass : #VMInterpreterTests,
#instVars : [
'stackElement1',
'stackElement2',
'instructionPointer',
'receiver',
'context',
'temp1',
'temp2',
'method',
'argument2',
'argument1'
],
#pools : [
'VMStackFrameOffsets'
],
#category : #'VMMakerTests-InterpreterTests'
}
{ #category : #offset }
StackBuilderTest >> addFullFrame [
| frame |
method := methodBuilder newMethod
numberOfTemporaries: 2;
numberOfArguments: 2;
buildMethod.
frame := stackBuilder addNewFrame.
instructionPointer := method + 17.
frame beSuspendedAt: instructionPointer.
stackElement1 := memory integerObjectOf: 4.
stackElement2 := memory integerObjectOf: 5.
frame stack: {
stackElement1.
stackElement2 }.
temp1 := memory integerObjectOf: 6.
temp2 := memory integerObjectOf: 7.
frame temps: {
temp1.
temp2 }.
receiver := memory integerObjectOf: 8.
frame receiver: receiver.
context := memory nilObject.
frame context: context.
frame method: method.
^ frame
]
{ #category : #offset }
StackBuilderTest >> offsetArgument1 [
^ self offsetArgument2 + 1
]
{ #category : #offset }
StackBuilderTest >> offsetArgument1FromBaseFP [
^ self offsetArgument2FromBaseFP + 1
]
{ #category : #offset }
StackBuilderTest >> offsetArgument2 [
"we skip the frame pointer"
^ self offsetMethod + 2
]
{ #category : #offset }
StackBuilderTest >> offsetArgument2FromBaseFP [
^ 2
]
{ #category : #offset }
StackBuilderTest >> offsetCallerFP [
^ self offsetMethod + 1
]
{ #category : #offset }
StackBuilderTest >> offsetContext [
^ self offsetFlags + 1
]
{ #category : #offset }
StackBuilderTest >> offsetFlags [
^ self offsetReceiver + 1
]
{ #category : #offset }
StackBuilderTest >> offsetInstructionPointer [
^ 0
]
{ #category : #offset }
StackBuilderTest >> offsetMethod [
^ self offsetContext + 1
]
{ #category : #offset }
StackBuilderTest >> offsetReceiver [
^ self offsetTemp1 + 1
]
{ #category : #offset }
StackBuilderTest >> offsetStackElement1 [
^ self offsetStackElement2 + 1
]
{ #category : #offset }
StackBuilderTest >> offsetStackElement2 [
^ self offsetInstructionPointer + 1
]
{ #category : #offset }
StackBuilderTest >> offsetTemp1 [
^ self offsetTemp2 + 1
]
{ #category : #offset }
StackBuilderTest >> offsetTemp2 [
^ self offsetStackElement1 + 1
]
{ #category : #running }
StackBuilderTest >> setUp [
super setUp.
argument2 := memory integerObjectOf: 3.
argument1 := memory integerObjectOf: 2.
stackBuilder args: { argument1. argument2 }.
self addFullFrame.
self addFullFrame.
self addFullFrame.
stackBuilder buildStack.
]
{ #category : #'test-VMstate' }
StackBuilderTest >> testCallerFrameOfTopFrameShouldBeSecondFrameBuilderObject [
"For debug purpose, we added a link to the caller frame in the current frame."
self assert: (stackBuilder topFrame callerFrame)
equals: (stackBuilder frames nextToLast)
]
{ #category : #'test-VMstate' }
StackBuilderTest >> testCallerInstructionPointerIsPushedInStack [
"We have 3 frames.
The caller of the caller of the top frame is the first one, which is the base"
self assert: (interpreter frameCallerSavedIP: interpreter framePointer)
equals: stackBuilder frames second instructionPointer.
]
{ #category : #'test-setFromMethod' }
StackBuilderTest >> testFrameHasMoreArgumentsThanMethodShouldFail [
| frame |
stackBuilder reset.
method := methodBuilder newMethod buildMethod.
frame := stackBuilder addNewFrame.
frame
method: method;
argumentSize: 1.
self should: [ stackBuilder buildStack ] raise: Error
]
{ #category : #'test-setFromMethod' }
StackBuilderTest >> testFrameHasMoreTemporariesThanMethodShouldFail [
| frame |
stackBuilder reset.
method := methodBuilder newMethod buildMethod.
frame := stackBuilder addNewFrame.
frame
method: method;
temps: { memory nilObject }.
self should: [ stackBuilder buildStack ] raise: Error
]
{ #category : #'test-VMstate' }
StackBuilderTest >> testHeadFramePointerCallerCallerIsBaseFramePointer [
"We have 3 frames.
The caller of the caller of the top frame is the first one, which is the base"
self assert: (interpreter frameCallerFP: (interpreter frameCallerFP: interpreter framePointer))
equals: stackBuilder page baseFP
]
{ #category : #'test-VMstate' }
StackBuilderTest >> testHeadFramePointerCallerIsNotBaseFramePointer [
"We have 3 frames.
The caller of the top frame should be the middle one"
self deny: (interpreter frameCallerFP: interpreter framePointer)
equals: stackBuilder page baseFP
]
{ #category : #'test-setFromMethod' }
StackBuilderTest >> testInstructionPointerIsSetBeforeFirstBytecodeOfLastMethodPushed [
method := methodBuilder newMethod buildMethod.
stackBuilder addNewFrame method: method.
stackBuilder buildStack.
self
assert: interpreter instructionPointer
equals: (methodBuilder bytecodeAt: 0 forMethod: method)
]
{ #category : #'test-setFromMethod' }
StackBuilderTest >> testMethodHasMoreArgumentsThanFrameShouldUpdateFrame [
| frame argNum |
stackBuilder reset.
argNum := 1.
method := methodBuilder
newMethod;
numberOfArguments: argNum;
buildMethod.
frame := stackBuilder addNewFrame.
frame method: method.
self assert: frame argumentSize equals: 0.
stackBuilder buildStack.
self assert: frame argumentSize equals: argNum
]
{ #category : #'test-setFromMethod' }
StackBuilderTest >> testMethodHasMoreTemporariesThanFrameShouldUpdateFrame [
| frame tempNum |
stackBuilder reset.
tempNum := 1.
method := methodBuilder
newMethod;
numberOfTemporaries: tempNum;
buildMethod.
frame := stackBuilder addNewFrame.
frame method: method.
self assert: frame temps isEmpty.
stackBuilder buildStack.
self
assert: frame temps
equals: (OrderedCollection new: tempNum withAll: memory nilObject)
]
{ #category : #'test-order' }
StackBuilderTest >> testOrderArgument1InBaseFrame [
self assert: (interpreter stackPages unsignedLongAt: interpreter stackPage baseFP + (self offsetArgument1FromBaseFP * memory bytesPerOop))
equals: argument1
]
{ #category : #'test-order' }
StackBuilderTest >> testOrderArgument2InBaseFrame [
self assert: (interpreter stackPages unsignedLongAt: interpreter stackPage baseFP + (self offsetArgument2FromBaseFP * memory bytesPerOop))
equals: argument2
]
{ #category : #'test-order' }
StackBuilderTest >> testOrderContext [
self assert: (interpreter stackValue: self offsetContext)
equals: context
]
{ #category : #'test-order' }
StackBuilderTest >> testOrderMethod [
self assert: (interpreter stackValue: self offsetMethod)
equals: method
]
{ #category : #'test-order' }
StackBuilderTest >> testOrderReceiver [
self assert: (interpreter stackValue: self offsetReceiver)
equals: receiver
]
{ #category : #'test-order' }
StackBuilderTest >> testOrderStackElementIsReversed [
self assert: (interpreter stackValue: self offsetStackElement1)
equals: stackElement1.
self assert: (interpreter stackValue: self offsetStackElement2)
equals: stackElement2.
]
{ #category : #'test-order' }
StackBuilderTest >> testOrderStackTopOfSuspendedProcessIsInstructionPointer [
"When a process is suspended, the Instruction Pointer is pushed on the stack of the frame.
It should be the last thing pushed, and therefore, be at the top. "
self assert: (interpreter stackValue: self offsetInstructionPointer)
equals: instructionPointer.
]
{ #category : #'test-order' }
StackBuilderTest >> testOrderTempIsReversed [
self assert: (interpreter stackValue: self offsetTemp1)
equals: temp1.
self assert: (interpreter stackValue: self offsetTemp2)
equals: temp2.
]
{ #category : #'test-VMstate' }
StackBuilderTest >> testPageHeadFPIsLastFrameFP [
"The FramePointer of the interpreter should be the FramePointer of the current process last pushed frame."
self assert: interpreter framePointer
equals: stackBuilder page headFP
]