refactor: Restructure source code folder

This way the location of certain classes should make more sense

test/unit/http/ldp/PostOperationHandler.test.ts

@@ -0,0 +1,51 @@
+import { PostOperationHandler } from '../../../../src/http/ldp/PostOperationHandler';
+import type { Operation } from '../../../../src/http/Operation';
+import { BasicRepresentation } from '../../../../src/http/representation/BasicRepresentation';
+import type { Representation } from '../../../../src/http/representation/Representation';
+import { RepresentationMetadata } from '../../../../src/http/representation/RepresentationMetadata';
+import type { ResourceIdentifier } from '../../../../src/http/representation/ResourceIdentifier';
+import { BasicConditions } from '../../../../src/storage/BasicConditions';
+import type { ResourceStore } from '../../../../src/storage/ResourceStore';
+import { BadRequestHttpError } from '../../../../src/util/errors/BadRequestHttpError';
+import { NotImplementedHttpError } from '../../../../src/util/errors/NotImplementedHttpError';
+import { SOLID_HTTP } from '../../../../src/util/Vocabularies';
+
+describe('A PostOperationHandler', (): void => {
+  let operation: Operation;
+  let body: Representation;
+  const conditions = new BasicConditions({});
+  let store: ResourceStore;
+  let handler: PostOperationHandler;
+
+  beforeEach(async(): Promise<void> => {
+    body = new BasicRepresentation('', 'text/turtle');
+    operation = { method: 'POST', target: { path: 'http://test.com/foo' }, body, conditions, preferences: {}};
+    store = {
+      addResource: jest.fn(async(): Promise<ResourceIdentifier> => ({ path: 'newPath' } as ResourceIdentifier)),
+    } as unknown as ResourceStore;
+    handler = new PostOperationHandler(store);
+  });
+
+  it('only supports POST operations.', async(): Promise<void> => {
+    await expect(handler.canHandle({ operation })).resolves.toBeUndefined();
+    operation.method = 'GET';
+    await expect(handler.canHandle({ operation })).rejects.toThrow(NotImplementedHttpError);
+  });
+
+  it('errors if there is no body or content-type.', async(): Promise<void> => {
+    operation.body!.metadata.contentType = undefined;
+    await expect(handler.handle({ operation })).rejects.toThrow(BadRequestHttpError);
+    delete operation.body;
+    await expect(handler.handle({ operation })).rejects.toThrow(BadRequestHttpError);
+  });
+
+  it('adds the given representation to the store and returns the correct response.', async(): Promise<void> => {
+    const result = await handler.handle({ operation });
+    expect(result.statusCode).toBe(201);
+    expect(result.metadata).toBeInstanceOf(RepresentationMetadata);
+    expect(result.metadata?.get(SOLID_HTTP.location)?.value).toBe('newPath');
+    expect(result.data).toBeUndefined();
+    expect(store.addResource).toHaveBeenCalledTimes(1);
+    expect(store.addResource).toHaveBeenLastCalledWith(operation.target, body, conditions);
+  });
+});