diff --git a/packages/proxy/package.json b/packages/proxy/package.json
index 84ee10ada..5ed42a8e3 100644
--- a/packages/proxy/package.json
+++ b/packages/proxy/package.json
@@ -50,7 +50,8 @@
     "request": "2.87.0"
   },
   "devDependencies": {
-    "@verdaccio/types": "workspace:11.0.0-6-next.7"
+    "@verdaccio/types": "workspace:11.0.0-6-next.7",
+    "nock": "13.0.11"
   },
   "funding": {
     "type": "opencollective",
diff --git a/packages/proxy/test/conf/proxy1.yaml b/packages/proxy/test/conf/proxy1.yaml
new file mode 100644
index 000000000..cbdee5ad1
--- /dev/null
+++ b/packages/proxy/test/conf/proxy1.yaml
@@ -0,0 +1,31 @@
+storage: ./storage
+plugins: ./plugins
+web:
+  title: Verdaccio
+auth:
+  htpasswd:
+    file: ./htpasswd
+uplinks:
+  npmjs:
+    url: https://registry.npmjs.org/
+
+packages:
+  '@*/*':
+    access: $all
+    publish: $authenticated
+    unpublish: $authenticated
+    proxy: npmjs
+
+  '**':
+    access: $all
+    publish: $authenticated
+    unpublish: $authenticated
+    proxy: npmjs
+
+server:
+  keepAliveTimeout: 60
+
+middlewares:
+  audit:
+    enabled: true
+logs: { type: stdout, format: pretty, level: http }
diff --git a/packages/proxy/test/headers.auth.spec.ts b/packages/proxy/test/headers.auth.spec.ts
index 871f87a6e..a4cff0d51 100644
--- a/packages/proxy/test/headers.auth.spec.ts
+++ b/packages/proxy/test/headers.auth.spec.ts
@@ -19,6 +19,7 @@ function createUplink(config) {
 
 function setHeaders(config: unknown = {}, headers: unknown = {}) {
   const uplink = createUplink(config);
+  // @ts-expect-error
   return uplink._setHeaders({
     headers,
   });
diff --git a/packages/proxy/test/proxy.spec.ts b/packages/proxy/test/proxy.spec.ts
new file mode 100644
index 000000000..472e64be7
--- /dev/null
+++ b/packages/proxy/test/proxy.spec.ts
@@ -0,0 +1,149 @@
+import path from 'path';
+import nock from 'nock';
+import { Config, parseConfigFile } from '@verdaccio/config';
+import { ErrorCode } from '@verdaccio/utils';
+import { API_ERROR } from '@verdaccio/commons-api';
+import { ProxyStorage } from '../src/up-storage';
+
+const getConf = (name) => path.join(__dirname, '/conf', name);
+
+const mockDebug = jest.fn();
+const mockInfo = jest.fn();
+const mockHttp = jest.fn();
+const mockError = jest.fn();
+const mockWarn = jest.fn();
+jest.mock('@verdaccio/logger', () => {
+  const originalLogger = jest.requireActual('@verdaccio/logger');
+  return {
+    ...originalLogger,
+    logger: {
+      child: () => ({
+        debug: (arg) => mockDebug(arg),
+        info: (arg) => mockInfo(arg),
+        http: (arg) => mockHttp(arg),
+        error: (arg) => mockError(arg),
+        warn: (arg) => mockWarn(arg),
+      }),
+    },
+  };
+});
+
+const domain = 'https://registry.npmjs.org';
+
+describe('proxy', () => {
+  beforeEach(() => {
+    nock.cleanAll();
+  });
+  const defaultRequestOptions = {
+    url: 'https://registry.npmjs.org',
+  };
+  const proxyPath = getConf('proxy1.yaml');
+  const conf = new Config(parseConfigFile(proxyPath));
+  describe('basic requests', () => {
+    test('proxy call with etag', (done) => {
+      nock(domain)
+        .get('/jquery')
+        .reply(
+          200,
+          { body: 'test' },
+          {
+            etag: () => `_ref_4444`,
+          }
+        );
+      const prox1 = new ProxyStorage(defaultRequestOptions, conf);
+      prox1.getRemoteMetadata('jquery', {}, (_error, body, etag) => {
+        expect(etag).toEqual('_ref_4444');
+        expect(body).toEqual({ body: 'test' });
+        done();
+      });
+    });
+
+    test('proxy call with etag as option', (done) => {
+      nock(domain)
+        .get('/jquery')
+        .reply(
+          200,
+          { body: 'test' },
+          {
+            etag: () => `_ref_4444`,
+          }
+        );
+      const prox1 = new ProxyStorage(defaultRequestOptions, conf);
+      prox1.getRemoteMetadata('jquery', { etag: 'rev_3333' }, (_error, body, etag) => {
+        expect(etag).toEqual('_ref_4444');
+        expect(body).toEqual({ body: 'test' });
+        done();
+      });
+    });
+
+    test('proxy  not found', (done) => {
+      nock(domain).get('/jquery').reply(404);
+      const prox1 = new ProxyStorage(defaultRequestOptions, conf);
+      prox1.getRemoteMetadata('jquery', { etag: 'rev_3333' }, (error) => {
+        expect(error).toEqual(ErrorCode.getNotFound(API_ERROR.NOT_PACKAGE_UPLINK));
+        done();
+      });
+    });
+  });
+
+  describe('tarballs', () => {
+    test('tarball call', (done) => {
+      nock(domain)
+        .get('/jquery')
+        .reply(
+          200,
+          { body: 'test' },
+          {
+            etag: () => `_ref_4444`,
+          }
+        );
+      const prox1 = new ProxyStorage(defaultRequestOptions, conf);
+      prox1.getRemoteMetadata('jquery', {}, (_error, body, etag) => {
+        expect(etag).toEqual('_ref_4444');
+        expect(body).toEqual({ body: 'test' });
+        done();
+      });
+    });
+  });
+
+  describe('error handling', () => {
+    test('reply with error', (done) => {
+      nock(domain).get('/jquery').replyWithError('something awful happened');
+      const prox1 = new ProxyStorage(defaultRequestOptions, conf);
+      prox1.getRemoteMetadata('jquery', {}, (error) => {
+        expect(error).toEqual(new Error('something awful happened'));
+        done();
+      });
+    });
+
+    test('reply with bad body json format', (done) => {
+      nock(domain).get('/jquery').reply(200, 'some-text');
+      const prox1 = new ProxyStorage(defaultRequestOptions, conf);
+      prox1.getRemoteMetadata('jquery', {}, (error) => {
+        expect(error).toEqual(new SyntaxError('Unexpected token s in JSON at position 0'));
+        done();
+      });
+    });
+
+    test('400 error proxy call', (done) => {
+      nock(domain).get('/jquery').reply(409);
+      const prox1 = new ProxyStorage(defaultRequestOptions, conf);
+      prox1.getRemoteMetadata('jquery', {}, (error) => {
+        expect(error.statusCode).toEqual(500);
+        expect(mockInfo).toHaveBeenCalled();
+        expect(mockHttp).toHaveBeenCalledWith({
+          request: { method: 'GET', url: 'https://registry.npmjs.org/jquery' },
+          status: 409,
+        });
+        expect(mockHttp).toHaveBeenCalledWith({
+          bytes: { in: 0, out: 0 },
+          err: undefined,
+          error: undefined,
+          request: { method: 'GET', url: 'https://registry.npmjs.org/jquery' },
+          status: 409,
+        });
+        done();
+      });
+    });
+  });
+});
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 68c28a55e..fe481dff6 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -886,6 +886,7 @@ importers:
       '@verdaccio/utils': workspace:6.0.0-6-next.4
       JSONStream: 1.3.5
       lodash: ^4.17.20
+      nock: 13.0.11
       request: 2.87.0
     dependencies:
       '@verdaccio/commons-api': link:../core/commons-api
@@ -899,6 +900,7 @@ importers:
       request: 2.87.0
     devDependencies:
       '@verdaccio/types': link:../core/types
+      nock: 13.0.11
 
   packages/server:
     specifiers:
@@ -19935,6 +19937,18 @@ packages:
       propagate: 2.0.1
     dev: true
 
+  /nock/13.0.11:
+    resolution: {integrity: sha512-sKZltNkkWblkqqPAsjYW0bm3s9DcHRPiMOyKO/PkfJ+ANHZ2+LA2PLe22r4lLrKgXaiSaDQwW3qGsJFtIpQIeQ==}
+    engines: {node: '>= 10.13'}
+    dependencies:
+      debug: 4.3.1
+      json-stringify-safe: 5.0.1
+      lodash.set: 4.3.2
+      propagate: 2.0.1
+    transitivePeerDependencies:
+      - supports-color
+    dev: true
+
   /nock/13.0.4:
     resolution: {integrity: sha512-alqTV8Qt7TUbc74x1pKRLSENzfjp4nywovcJgi/1aXDiUxXdt7TkruSTF5MDWPP7UoPVgea4F9ghVdmX0xxnSA==}
     engines: {node: '>= 10.13'}