feat(hydrate-mocks): add create-hydrated-mock functionality

* refactor(hydrate-mocks): remove duplicated code

* refactor(hydrate-mocks): revert changes

* feat(hydrate-mocks): red - add create-hydrated-mock type and transformation

* feat(hydrate-mocks): green - add support for basic createHydratedMock

* feat(hydrate-mocks): green - add support for union types

* feat(hydrate-mocks): green - make sure undefined union types will result in undefined

* feat(hydrate-mocks): green - refactor tests

* feat(hydrate-mocks): green - remove unnecessary check

* feat(hydrate-mocks): refactor - rename test file

* feat(hydrate-mocks): refactor - rename test description

* feat(hydrate-mocks): red - make sure createHydratedMock doesn't is independent from createMock

* feat(hydrate-mocks): red - remove unnecessary check in the test

* feat(hydrate-mocks): green - always returns a new mock when is hydrated

* feat(hydrate-mocks): red - add test when creatingMock with createMock after a mock has been created with createHydratedMock

* feat(hydrate-mocks): green - duplicate all the cache (declaration, factory and file registration) to support hydrated mocks

* feat(hydrate-mocks): refactor - extract modulesNameIdentifierPerFile

* feat(hydrate-mocks): green - add hydrated initial generic support

* feat(hydrate-mocks): red - add hydrated tests for generic with extends

* feat(hydrate-mocks): green - use the correct mock for generic extensions

* feat(hydrate-mocks): green - run createHydratedMock on ci

* feat(hydrate-mocks): green - add support for circular generic extensions

* feat(hydrate-mocks): green - add support for register mock

* feat(hydrate-mocks): green - add test for type of enum

* feat(hydrate-mocks): green - add test to make sure createMock and createHydratedMocks are independent

* feat(hydrate-mocks): green - add support for intersections

* feat(hydrate-mocks): refactor - create a function to handle type of declaration based on scope

* feat(hydrate-mocks): refactor - create clone static method on Scope so it will be easier to carry hydrated when creating a new scope

* feat(hydrate-mocks): refactor - remove duplicated code in register mock

* feat(hydrate-mocks): doc - add createHydratedMock documentation

Author: uittorio

package.json

@@ -12,11 +12,12 @@
         "build:transformer:definitelyTyped": "webpack --config config/modules/definitelyTypedTransformer/webpack.functions.js && webpack --config config/modules/definitelyTypedTransformer/webpack.js",
         "build:transformer:definitelyTyped:debug": "cross-env DEBUG=true webpack --config config/modules/definitelyTypedTransformer/webpack.functions.js && cross-env DEBUG=true webpack --config config/modules/definitelyTypedTransformer/webpack.js",
         "build:playground": "ttsc --project ./test/playground/tsconfig.build.json",
-        "test": "npm run test:transformer && npm run test:noTransformer && npm run test:framework:context && npm run test:framework && npm run test:frameworkDeprecated && npm run test:registerMock && npm run test:features && npm run test:filesFilter && npm run test:logs && npm run test:unit",
+        "test": "npm run test:transformer && npm run test:noTransformer && npm run test:framework:context && npm run test:framework && npm run test:frameworkDeprecated && npm run test:registerMock && npm run test:createHydratedMock && npm run test:features && npm run test:filesFilter && npm run test:logs && npm run test:unit",
         "test:unit": "cross-env JASMINE_CONFIG=./test/unit/jasmine.json TSCONFIG=./test/tsconfig.json npm run test:common",
         "test:transformer": "cross-env JASMINE_CONFIG=./test/transformer/jasmine.json TSCONFIG=./test/transformer/tsconfig.json npm run test:common",
         "test:noTransformer": "cross-env JASMINE_CONFIG=./test/noTransformer/jasmine.json TSCONFIG=./test/tsconfig.json npm run test:common",
         "test:registerMock": "cross-env JASMINE_CONFIG=./test/registerMock/jasmine.json TSCONFIG=./test/registerMock/tsconfig.json npm run test:common",
+        "test:createHydratedMock": "cross-env JASMINE_CONFIG=./test/createHydratedMock/jasmine.json TSCONFIG=./test/createHydratedMock/tsconfig.json npm run test:common",
         "test:framework:context": "cross-env JASMINE_CONFIG=./test/frameworkContext/jasmine.json TSCONFIG=./test/frameworkContext/tsconfig.json npm run test:common",
         "test:frameworkDeprecated": "cross-env JASMINE_CONFIG=./test/frameworkContext/jasmineDeprecated.json TSCONFIG=./test/frameworkContext/tsconfig.json npm run test:common",
         "test:framework": "cross-env JASMINE_CONFIG=./test/framework/jasmine.json TSCONFIG=./test/framework/tsconfig.json npm run test:common",

src/create-hydrated-mock.ts

@@ -0,0 +1,9 @@
+import { NoTransformerError } from './errors/no-transformer.error';
+
+import { PartialDeep } from './partial/partial';
+
+export function createHydratedMock<T extends object>(
+  _values?: PartialDeep<T>
+): T {
+  throw new Error(NoTransformerError);
+}

src/index.ts

@@ -1,3 +1,4 @@
 export { createMock } from './create-mock';
 export { createMockList } from './create-mock-list';
+export { createHydratedMock } from './create-hydrated-mock';
 export { registerMock } from './register-mock';

src/transformer/descriptor/mock/mockProperties.ts

@@ -44,7 +44,7 @@ export function GetMockPropertiesFromDeclarations(
         return false;
       }
 
-      if (member.questionToken) {
+      if (member.questionToken && !scope.hydrated) {
         return false;
       }
 

src/transformer/descriptor/typeParameter/typeParameter.ts

@@ -33,8 +33,9 @@ export function GetTypeParameterDescriptor(
     );
   }
 
-  const genericKey: string = MockDefiner.instance.getDeclarationKeyMap(
-    typeDeclaration
+  const genericKey: string = MockDefiner.instance.getDeclarationKeyMapBasedOnScope(
+    typeDeclaration,
+    scope
   );
 
   return createFunctionToAccessToGenericValue(

src/transformer/descriptor/typeQuery/typeQuery.ts

@@ -80,7 +80,10 @@ export function GetTypeQueryDescriptorFromDeclaration(
       // TODO: Use following two lines when issue #17552 on typescript github is resolved (https://github.com/microsoft/TypeScript/issues/17552)
       // TheNewEmitResolver.ensureEmitOf(GetImportDeclarationOf(node.eprName as ts.Identifier);
       // return node.exprName as ts.Identifier;
-      return GetMockFactoryCallTypeofEnum(declaration as ts.EnumDeclaration);
+      return GetMockFactoryCallTypeofEnum(
+        declaration as ts.EnumDeclaration,
+        scope
+      );
     case ts.SyntaxKind.FunctionDeclaration:
     case ts.SyntaxKind.MethodSignature:
       return GetMethodDeclarationDescriptor(

src/transformer/descriptor/typeReference/typeReference.ts

@@ -21,16 +21,16 @@ export function GetTypeReferenceDescriptor(
     node.typeName
   );
 
-  if (MockDefiner.instance.hasMockForDeclaration(declaration)) {
-    return GetMockFactoryCall(node, scope);
+  if (MockDefiner.instance.hasMockForDeclaration(declaration, scope)) {
+    return GetMockFactoryCall(node, declaration, scope);
   }
 
   if (IsTypescriptType(declaration)) {
     return GetTypescriptTypeDescriptor(node, scope);
   }
 
   if (isTypeReferenceReusable(declaration)) {
-    return CreateMockFactory(node, scope);
+    return CreateMockFactory(node, declaration, scope);
   }
 
   return GetDescriptor(declaration, scope);

src/transformer/descriptor/union/union.ts

@@ -10,6 +10,18 @@ export function GetUnionDescriptor(
 ): ts.Expression {
   const findNodes: ts.Node[] = GetTypes(node.types, scope);
 
+  if (scope.hydrated) {
+    const removeUndefinedNodes: ts.Node[] = findNodes.filter(
+      (typeNode: ts.TypeNode) => !isNotDefinedType(typeNode)
+    );
+
+    if (removeUndefinedNodes.length) {
+      return GetDescriptor(removeUndefinedNodes[0], scope);
+    }
+
+    return GetUndefinedDescriptor();
+  }
+
   const notDefinedType: ts.Node[] = findNodes.filter((typeNode: ts.TypeNode) =>
     isNotDefinedType(typeNode)
   );

src/transformer/genericDeclaration/genericDeclaration.ts

@@ -132,10 +132,13 @@ export function GenericDeclaration(scope: Scope): IGenericDeclaration {
               genericNode.typeName
             );
 
+            const typeParameterDeclarationKey: string = MockDefiner.instance.getDeclarationKeyMapBasedOnScope(
+              typeParameterDeclaration,
+              scope
+            );
+
             const isExtendingItself: boolean =
-              MockDefiner.instance.getDeclarationKeyMap(
-                typeParameterDeclaration
-              ) === declarationKey;
+              typeParameterDeclarationKey === declarationKey;
             if (isExtendingItself) {
               // FIXME: Currently, circular generics aren't supported. See
               // https://github.com/Typescript-TDD/ts-auto-mock/pull/312 for more

src/transformer/mock/mock.ts

@@ -18,6 +18,12 @@ function getMockExpression(nodeToMock: ts.TypeNode): ts.Expression {
   return GetDescriptor(nodeToMock, new Scope());
 }
 
+function getMockHydratedExpression(nodeToMock: ts.TypeNode): ts.Expression {
+  const scope: Scope = new Scope();
+  scope.hydrated = true;
+  return GetDescriptor(nodeToMock, scope);
+}
+
 function hasDefaultValues(node: ts.CallExpression): boolean {
   return !!node.arguments.length && !!node.arguments[0];
 }
@@ -41,6 +47,21 @@ export function getMock(
   return mockExpression;
 }
 
+export function getHydratedMock(
+  nodeToMock: ts.TypeNode,
+  node: ts.CallExpression
+): ts.Expression {
+  SetCurrentCreateMock(node);
+
+  const mockExpression: ts.Expression = getMockHydratedExpression(nodeToMock);
+
+  if (hasDefaultValues(node)) {
+    return getMockMergeExpression(mockExpression, node.arguments[0]);
+  }
+
+  return mockExpression;
+}
+
 export function getMockForList(
   nodeToMock: ts.TypeNode,
   node: ts.CallExpression