diff --git a/repository/OpenPonk-Spec/OPLegacyProjectLoadTestGenerator.class.st b/repository/OpenPonk-Spec/OPLegacyProjectLoadTestGenerator.class.st
new file mode 100644
index 00000000..0a3cc7db
--- /dev/null
+++ b/repository/OpenPonk-Spec/OPLegacyProjectLoadTestGenerator.class.st
@@ -0,0 +1,146 @@
+Class {
+	#name : 'OPLegacyProjectLoadTestGenerator',
+	#superclass : 'Object',
+	#category : 'OpenPonk-Spec-Tests',
+	#package : 'OpenPonk-Spec',
+	#tag : 'Tests'
+}
+
+{ #category : 'generating' }
+OPLegacyProjectLoadTestGenerator class >> generateAllForVersion: aCollection [
+
+	<script: 'self generateAllForVersion: ''410'''>
+	OPLegacyProjectLoadTestGenerator allSubclasses
+		reject: [ :each | each isAbstract ]
+		thenDo: [ :each | each generateForVersion: aCollection ]
+]
+
+{ #category : 'generating' }
+OPLegacyProjectLoadTestGenerator class >> generateForVersion: aCollection [
+
+	self new generateForVersion: aCollection
+]
+
+{ #category : 'generating' }
+OPLegacyProjectLoadTestGenerator >> classNameForVersion: aCollection [
+
+	| versionString |
+	versionString := (String streamContents: [ :s |
+		                  aCollection asStringOn: s delimiter: '' ])
+		                 select: [ :each | each isDigit ].
+	^ Symbol streamContents: [ :s |
+		  s << 'OP' << self pluginName.
+		  aCollection asStringOn: s delimiter: ''.
+		  s << 'oppProjectLoadTest' ]
+]
+
+{ #category : 'generating' }
+OPLegacyProjectLoadTestGenerator >> createClassForVersion: aCollection [
+
+	| className |
+	className := self classNameForVersion: aCollection.
+	(Smalltalk hasClassNamed: className) ifTrue: [
+		self notify: 'Class ' , className
+			, ' already exists - you may Proceed to overwrite' ].
+	^ (OPLegacyProjectLoadTest << className asSymbol)
+		  tag: self tagName;
+		  package: self packageName;
+		  install
+]
+
+{ #category : 'generating' }
+OPLegacyProjectLoadTestGenerator >> createMethodIn: aClass [
+
+	^ aClass compile: (String streamContents: [ :s |
+			   s << 'base64ProjectZip
+
+^'''.
+			   self putBase64On: s.
+			   s nextPut: $' ])
+]
+
+{ #category : 'generating' }
+OPLegacyProjectLoadTestGenerator >> createModel [
+
+	^ self model
+]
+
+{ #category : 'generating' }
+OPLegacyProjectLoadTestGenerator >> createProject [
+
+	| project |
+	project := OPProject named: ''.
+	project addModel: self createModel.
+	^ project
+]
+
+{ #category : 'generating' }
+OPLegacyProjectLoadTestGenerator >> createWorkbench [
+
+	| workbench |
+	workbench := self createProject open.
+	workbench showAllElementsInAllDiagrams.
+	^ workbench
+]
+
+{ #category : 'generating' }
+OPLegacyProjectLoadTestGenerator >> generateForVersion: aString [
+
+	| class |
+	class := self createClassForVersion: aString.
+	self createMethodIn: class.
+	self
+		assert: (class run: #testLoad) hasPassed
+		description:
+		'Class ' , class name , ' was generated, but its test failed'
+]
+
+{ #category : 'hooks' }
+OPLegacyProjectLoadTestGenerator >> model [
+
+	^ self subclassResponsibility
+]
+
+{ #category : 'accessing' }
+OPLegacyProjectLoadTestGenerator >> packageName [
+
+	^ self class packageName
+]
+
+{ #category : 'hooks' }
+OPLegacyProjectLoadTestGenerator >> pluginName [
+
+	^ (self class name allButFirst: 2) copyUpToSubstring: 'Legacy'
+]
+
+{ #category : 'generating' }
+OPLegacyProjectLoadTestGenerator >> putBase64On: aStringStream [
+
+	^ self zipByteArrayStreamDo: [ :byteArrayStream |
+		  ZnBase64Encoder new encode: byteArrayStream to: aStringStream ]
+]
+
+{ #category : 'generating' }
+OPLegacyProjectLoadTestGenerator >> saveProjectTo: aFile [
+
+	| workbench |
+	workbench := self createWorkbench.
+	workbench projectController saveProjectTo: aFile.
+	workbench close
+]
+
+{ #category : 'hooks' }
+OPLegacyProjectLoadTestGenerator >> tagName [
+
+	^ self class packageTagName
+]
+
+{ #category : 'generating' }
+OPLegacyProjectLoadTestGenerator >> zipByteArrayStreamDo: aBlock [
+
+	| store file |
+	store := FileSystem memory root.
+	file := store asFileReference / self className , 'opp'.
+	self saveProjectTo: file.
+	^ file binaryReadStreamDo: [ :s | aBlock cull: s ]
+]