Added directory/file exists

src/__tests__/repertory.test.js

@@ -102,6 +102,8 @@ test('can create and remove a directory using api', async () => {
   );
   const api = repertory.create_api(conn);
   expect(await api.directory.create('/repertory_js')).toEqual(0);
+  expect(await api.directory.exists('/repertory_js')).toEqual(true);
+  expect(await api.file.exists('/repertory_js')).toEqual(false);
   expect(await api.directory.remove('/repertory_js')).toEqual(0);
 
   await conn.disconnect();
@@ -278,6 +280,8 @@ test('can upload and download a file using api', async () => {
     await calculate_sha256('repertory_test.dat')
   );
 
+  expect(await api.directory.exists('/repertory_test.dat')).toEqual(false);
+  expect(await api.file.exists('/repertory_test.dat')).toEqual(true);
   expect(await api.file.delete('/repertory_test.dat')).toEqual(0);
   fs.unlinkSync('repertory_test.dat');
 
@@ -518,3 +522,27 @@ test('can resume upload using api', async () => {
 
   await conn.disconnect();
 }, 60000);
+
+test('exists returns false if directory is not found', async () => {
+  const conn = await repertory.create_pool(
+    2,
+    TEST_HOST,
+    TEST_PORT,
+    TEST_PASSWORD
+  );
+  const api = repertory.create_api(conn);
+  expect(await api.directory.exists('/cow')).toEqual(false);
+  await conn.disconnect();
+});
+
+test('exists returns false if file is not found', async () => {
+  const conn = await repertory.create_pool(
+    2,
+    TEST_HOST,
+    TEST_PORT,
+    TEST_PASSWORD
+  );
+  const api = repertory.create_api(conn);
+  expect(await api.file.exists('/cow')).toEqual(false);
+  await conn.disconnect();
+});