Refactor current tests to super & subclasses architecture

src/Containers-Buffer-Tests/CTAbstractBufferTest.class.st

@@ -0,0 +1,237 @@
+"
+Abstract test class containing common tests for both FIFO and LIFO buffer implementations.
+Subclasses must implement setUp to create their specific buffer type.
+"
+Class {
+	#name : 'CTAbstractBufferTest',
+	#superclass : 'TestCase',
+	#instVars : [
+		'buffer'
+	],
+	#category : 'Containers-Buffer-Tests',
+	#package : 'Containers-Buffer-Tests'
+}
+
+{ #category : 'testing' }
+CTAbstractBufferTest class >> isAbstract [
+
+	^ self == CTAbstractBufferTest
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testAvailableSpace [
+
+	self assert: buffer availableSpace equals: 3.
+	buffer push: 'a'.
+	self assert: buffer availableSpace equals: 2.
+	buffer push: 'b'; push: 'c'.
+	self assert: buffer availableSpace equals: 0.
+	buffer pop.
+	self assert: buffer availableSpace equals: 1
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testBufferCreationWithCapacity [
+
+	| testBuffer |
+	testBuffer := buffer class withCapacity: 5.
+
+	self assert: testBuffer capacity equals: 5.
+	self assert: testBuffer size equals: 0.
+	self assert: testBuffer isEmpty.
+	self deny: testBuffer isFull.
+	self assert: testBuffer availableSpace equals: 5
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testBufferCreationWithInvalidCapacity [
+
+	self should: [ buffer class withCapacity: 0 ] raise: Error.
+	self should: [ buffer class withCapacity: -1 ] raise: Error
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testClearBuffer [
+
+	buffer push: 'a'; push: 'b'; push: 'c'.
+	buffer clear.
+
+	self assert: buffer isEmpty.
+	self assert: buffer size equals: 0.
+	self assert: buffer readIndex equals: 1.
+	self assert: buffer writeIndex equals: 1.
+	self assert: buffer availableSpace equals: 3
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testCopyBufferContentsOrder [
+	^ self subclassResponsibility
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testDefaultBufferCreation [
+
+	| testBuffer |
+	testBuffer := buffer class new.
+
+	self assert: testBuffer capacity equals: 10.
+	self assert: testBuffer isEmpty.
+	self assert: testBuffer readIndex equals: 1.
+	self assert: testBuffer writeIndex equals: 1
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testDoIteration [
+	^ self subclassResponsibility
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testDoIterationAfterOverwrite [
+	^ self subclassResponsibility
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testEmptyBufferErrors [
+
+	self should: [ buffer peek ] raise: Error.
+	self should: [ buffer pop ] raise: Error
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testIndicesAfterClear [
+
+	buffer push: 'a'; push: 'b'; push: 'c'.
+	buffer pop.
+	buffer clear.
+
+	self assert: buffer readIndex equals: 1.
+	self assert: buffer writeIndex equals: 1
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testIsEmpty [
+
+	self assert: buffer isEmpty.
+	buffer push: 'test'.
+	self deny: buffer isEmpty.
+	buffer pop.
+	self assert: buffer isEmpty
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testIsFull [
+
+	self deny: buffer isFull.
+	buffer push: 'a'; push: 'b'; push: 'c'.
+	self assert: buffer isFull.
+	buffer pop.
+	self deny: buffer isFull
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testOverwriteBehavior [
+	^ self subclassResponsibility
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testOverwriteBehaviorWithAvailableSpace [
+
+	buffer push: 'a'; push: 'b'; push: 'c'.
+	self assert: buffer availableSpace equals: 0.
+
+	buffer push: 'd'.
+	self assert: buffer availableSpace equals: 0.
+	self assert: buffer size equals: 3
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testPeekAndPop [
+	^ self subclassResponsibility
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testPopAndPushSequence [
+
+	buffer
+		push: 'a';
+		push: 'b'.
+	buffer pop.
+	buffer push: 'c'.
+
+	self assert: buffer size equals: 2.
+	self deny: buffer isEmpty 
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testPushAllCollection [
+
+		| result |
+	result := buffer pushAll: #('a' 'b' 'c').
+
+	self assert: buffer size equals: 3.
+	self assert: result equals: 'c'.
+	self assert: buffer isFull
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testPushMultipleElements [
+
+	buffer
+		push: 'first';
+		push: 'second';
+		push: 'third'.
+
+	self assert: buffer size equals: 3.
+	self assert: buffer isFull.
+	self assert: buffer availableSpace equals: 0.
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testPushSingleElement [
+
+	buffer push: 'first'.
+
+	self assert: buffer size equals: 1.
+	self deny: buffer isEmpty.
+	self deny: buffer isFull.
+	self assert: buffer availableSpace equals: 2.
+	self assert: buffer writeIndex equals: 2.
+	self assert: buffer readIndex equals: 1
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testReadIndexAfterPop [
+	^ self subclassResponsibility
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testReadIndexBehaviorOnAdd [
+	^ self subclassResponsibility
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testReadIndexBehaviorOnOverwrite [
+	^ self subclassResponsibility
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testSize [
+
+	self assert: buffer size equals: 0.
+	buffer push: 'a'.
+	self assert: buffer size equals: 1.
+	buffer push: 'b'; push: 'c'.
+	self assert: buffer size equals: 3.
+	buffer pop.
+	self assert: buffer size equals: 2
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testWriteIndexAfterPopAndOverwrite [
+	^ self subclassResponsibility
+]
+
+{ #category : 'tests' }
+CTAbstractBufferTest >> testWriteIndexBehavior [
+	^ self subclassResponsibility
+]