diff --git a/integration-tests/rpc-taquito.spec.ts b/integration-tests/rpc-taquito.spec.ts
index 61c71a003a..841cb43658 100644
--- a/integration-tests/rpc-taquito.spec.ts
+++ b/integration-tests/rpc-taquito.spec.ts
@@ -1,33 +1,57 @@
 import { CONFIGS } from "./config";
 import { RpcClient } from '@taquito/rpc';
+import { HttpResponseError } from "@taquito/http-utils";
 
 
-CONFIGS().forEach(({ rpc }) => {
-    const client = new RpcClient(rpc);
+CONFIGS().forEach(({ rpc, knownContract }) => {
+  const client = new RpcClient(rpc);
 
-    describe(`Test Taquito RPC: ${rpc}`, () => {
-        describe('Test getBlock', () => {
-            it('Verify that client.getBlock returns a block using default syntax', async (done) => {
-                // defaults to /chains/main/blocks/head/
-                const block = await client.getBlock();
+  describe(`Test Taquito RPC: ${rpc}`, () => {
+    describe('Test getBlock', () => {
+      it('Verify that client.getBlock returns a block using default syntax', async (done) => {
+        // defaults to /chains/main/blocks/head/
+        const block = await client.getBlock();
 
-                expect(block.protocol).toBeTruthy();
-                done();
-            })
-            it('Verify that client.getBlock({ block: \'head~2\' }) returns a block using head and tilde syntax', async (done) => {
-                const block = await client.getBlock({ block: 'head~2' });
-                const blockHeader = await client.getBlockHeader({ block: block.hash })
+        expect(block.protocol).toBeTruthy();
+        done();
+      });
+      it('Verify that client.getBlock({ block: \'head~2\' }) returns a block using head and tilde syntax', async (done) => {
+        const block = await client.getBlock({ block: 'head~2' });
+        const blockHeader = await client.getBlockHeader({ block: block.hash });
 
-                expect(block.header.predecessor).toEqual(blockHeader.predecessor);
-                done();
-            })
-            it('Verify that client.getBlock({ block: `${block.hash}~1` }) returns a block using hash and tilde syntax', async (done) => {
-                const block = await client.getBlock();
-                const predecessorBlock = await client.getBlock({ block: `${block.hash}~1` })
+        expect(block.header.predecessor).toEqual(blockHeader.predecessor);
+        done();
+      });
+      it('Verify that client.getBlock({ block: `${block.hash}~1` }) returns a block using hash and tilde syntax', async (done) => {
+        const block = await client.getBlock();
+        const predecessorBlock = await client.getBlock({ block: `${block.hash}~1` });
 
-                expect(predecessorBlock.hash).toEqual(block.header.predecessor);
-                done();
-            })
-        })
-    })
-})
+        expect(predecessorBlock.hash).toEqual(block.header.predecessor);
+        done();
+      });
+      it('Verify that unparse_mode has no error: Readable', async (done) => {
+        const response = await client.getNormalizedScript(knownContract, { unparsing_mode: 'Readable' });
+        expect(response.code).toBeDefined();
+        done();
+      });
+      it('Verify that unparse_mode has no error: Optimized', async (done) => {
+        const response = await client.getNormalizedScript(knownContract, { unparsing_mode: 'Optimized' });
+        expect(response.code).toBeDefined();
+        done();
+      });
+      it('Verify that unparse_mode has no error: Optimized_legacy', async (done) => {
+        const response = await client.getNormalizedScript(knownContract, { unparsing_mode: 'Optimized_legacy' });
+        expect(response.code).toBeDefined();
+        done();
+      });
+      it('Should fail unparsing_mode not acceptable', async (done) => {
+        expect(() => client.getNormalizedScript(knownContract, { unparsing_mode: 'else' as any })).rejects.toThrowError(HttpResponseError);
+        done();
+      });
+      it('Should fail unparsing_mode not acceptable', async (done) => {
+        expect(() => client.getNormalizedScript(knownContract, {} as any)).rejects.toThrowError(HttpResponseError);
+        done();
+      });
+    });
+  });
+});