refactor: Restructure source code folder

This way the location of certain classes should make more sense

test/unit/http/ldp/HeadOperationHandler.test.ts

@@ -0,0 +1,45 @@
+import type { Readable } from 'stream';
+import { HeadOperationHandler } from '../../../../src/http/ldp/HeadOperationHandler';
+import type { Operation } from '../../../../src/http/Operation';
+import type { Representation } from '../../../../src/http/representation/Representation';
+import { BasicConditions } from '../../../../src/storage/BasicConditions';
+import type { ResourceStore } from '../../../../src/storage/ResourceStore';
+import { NotImplementedHttpError } from '../../../../src/util/errors/NotImplementedHttpError';
+
+describe('A HeadOperationHandler', (): void => {
+  let operation: Operation;
+  const conditions = new BasicConditions({});
+  const preferences = {};
+  let store: ResourceStore;
+  let handler: HeadOperationHandler;
+  let data: Readable;
+
+  beforeEach(async(): Promise<void> => {
+    operation = { method: 'HEAD', target: { path: 'http://test.com/foo' }, preferences, conditions };
+    data = { destroy: jest.fn() } as any;
+    store = {
+      getRepresentation: jest.fn(async(): Promise<Representation> =>
+        ({ binary: false, data, metadata: 'metadata' } as any)),
+    } as any;
+
+    handler = new HeadOperationHandler(store);
+  });
+
+  it('only supports HEAD operations.', async(): Promise<void> => {
+    await expect(handler.canHandle({ operation })).resolves.toBeUndefined();
+    operation.method = 'GET';
+    await expect(handler.canHandle({ operation })).rejects.toThrow(NotImplementedHttpError);
+    operation.method = 'POST';
+    await expect(handler.canHandle({ operation })).rejects.toThrow(NotImplementedHttpError);
+  });
+
+  it('returns the representation from the store with the correct response.', async(): Promise<void> => {
+    const result = await handler.handle({ operation });
+    expect(result.statusCode).toBe(200);
+    expect(result.metadata).toBe('metadata');
+    expect(result.data).toBeUndefined();
+    expect(data.destroy).toHaveBeenCalledTimes(1);
+    expect(store.getRepresentation).toHaveBeenCalledTimes(1);
+    expect(store.getRepresentation).toHaveBeenLastCalledWith(operation.target, preferences, conditions);
+  });
+});