Added msal-node client-credential regression test

.github/workflows/client-credential-benchmark.yml

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+name: msal-node client-credential Regression Test
+on:
+    # Allows manual triggering of workflow
+    workflow_dispatch:
+
+    pull_request:
+        types: [opened, reopened, synchronize, ready_for_review]
+        paths:
+            - "regression-tests/msal-node/client-credential/*"
+            - "lib/msal-node/**/*"
+            - "lib/msal-common/**/*"
+            - "!**.md"
+            - ".github/workflows/client-credential.yml"
+
+    merge_group:
+        types: [checks_requested]
+
+jobs:
+  benchmark:
+    name: Run msal-node client-credential Regression Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+      - name: Run benchmark
+        run: cd regression-tests/msal-node/client-credential && npm install && node index.js | tee output.txt
+
+      - name: Download previous benchmark data
+        uses: actions/cache@v3
+        with:
+          path: ./cache
+          key: ${{ runner.os }}-benchmark
+
+      - name: Store benchmark result
+        uses: benchmark-action/github-action-benchmark@v1
+        with:
+          name: msal-node client-credential Regression Test
+          tool: 'benchmarkjs'
+          output-file-path: regression-tests/msal-node/client-credential/output.txt
+          external-data-json-path: ./cache/client-credential-benchmark-data.json
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          # Show alert with commit comment on detecting possible performance regression
+          alert-threshold: '110%'
+          comment-on-alert: true
+          fail-on-alert: false
+          alert-comment-cc-users: '@bgavrilMS @robbie-microsoft'

.github/workflows/msal-node-confidential-client-benchmarks.yml

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+# Do not run this workflow on pull request since this workflow has permission to modify contents.
+on:
+  push:
+    branches:
+      - dev
+
+permissions:
+  # deployments permission to deploy GitHub pages website
+  deployments: write
+  # contents permission to update benchmark contents in gh-pages branch
+  contents: write
+
+jobs:
+  benchmark:
+    name: Performance regression check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+      - name: Run benchmark
+        run: cd regression-tests/msal-node/client-credential && npm install && node index.js | tee output.txt
+
+      # gh-pages branch is updated and pushed automatically with extracted benchmark data
+      # By default, this action assumes that gh-pages is the GitHub Pages branch and that
+      # /dev/bench is a path to put the benchmark dashboard page. They can be tweaked by
+      # the gh-pages-branch, gh-repository and benchmark-data-dir-path inputs.
+      - name: Store benchmark result
+        uses: benchmark-action/github-action-benchmark@v1
+        with:
+          name: msal-node client-credential Regression Test
+          tool: 'benchmarkjs'
+          output-file-path: regression-tests/msal-node/client-credential/output.txt
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          # Push and deploy GitHub pages branch automatically
+          auto-push: true

regression-tests/msal-node/Constants.js

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+/*
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License.
+ */
+
+const NetworkUtils = class NetworkUtils {
+    // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types
+    static getNetworkResponse(headers, body, statusCode) {
+        return {
+            headers: headers,
+            body: body,
+            status: statusCode,
+        };
+    }
+};
+
+const DEFAULT_OPENID_CONFIG_RESPONSE = {
+    headers: {},
+    status: 200,
+    body: {
+        token_endpoint:
+            "https://login.microsoftonline.com/{tenant}/oauth2/v2.0/token",
+        token_endpoint_auth_methods_supported: [
+            "client_secret_post",
+            "private_key_jwt",
+            "client_secret_basic",
+        ],
+        jwks_uri:
+            "https://login.microsoftonline.com/{tenant}/discovery/v2.0/keys",
+        response_modes_supported: ["query", "fragment", "form_post"],
+        subject_types_supported: ["pairwise"],
+        id_token_signing_alg_values_supported: ["RS256"],
+        response_types_supported: [
+            "code",
+            "id_token",
+            "code id_token",
+            "id_token token",
+        ],
+        scopes_supported: ["openid", "profile", "email", "offline_access"],
+        issuer: "https://login.microsoftonline.com/{tenant}/v2.0",
+        request_uri_parameter_supported: false,
+        userinfo_endpoint: "https://graph.microsoft.com/oidc/userinfo",
+        authorization_endpoint:
+            "https://login.microsoftonline.com/{tenant}/oauth2/v2.0/authorize",
+        http_logout_supported: true,
+        frontchannel_logout_supported: true,
+        end_session_endpoint:
+            "https://login.microsoftonline.com/{tenant}/oauth2/v2.0/logout",
+        claims_supported: [
+            "sub",
+            "iss",
+            "cloud_instance_name",
+            "cloud_instance_host_name",
+            "cloud_graph_host_name",
+            "msgraph_host",
+            "aud",
+            "exp",
+            "iat",
+            "auth_time",
+            "acr",
+            "nonce",
+            "preferred_username",
+            "name",
+            "tid",
+            "ver",
+            "at_hash",
+            "c_hash",
+            "email",
+        ],
+        tenant_region_scope: null,
+        cloud_instance_name: "microsoftonline.com",
+        cloud_graph_host_name: "graph.windows.net",
+        msgraph_host: "graph.microsoft.com",
+        rbac_url: "https://pas.windows.net",
+    },
+};
+
+const CONFIDENTIAL_CLIENT_AUTHENTICATION_RESULT = {
+    headers: {},
+    status: 200,
+    body: {
+        token_type: "Bearer",
+        expires_in: 3599,
+        ext_expires_in: 3599,
+        refresh_in: 3598 / 2,
+        access_token: "thisIs.an.accessT0ken",
+    },
+};
+
+module.exports = {
+    CONFIDENTIAL_CLIENT_AUTHENTICATION_RESULT,
+    DEFAULT_OPENID_CONFIG_RESPONSE,
+    NetworkUtils,
+};

regression-tests/msal-node/client-credential/.gitignore

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+node_modules/
+package-lock.json

regression-tests/msal-node/client-credential/index.js

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+/*
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License.
+ */
+
+/* eslint-disable @typescript-eslint/no-unused-vars */
+
+import benchmark from "benchmark";
+import * as msal from "@azure/msal-node";
+import {
+    CONFIDENTIAL_CLIENT_AUTHENTICATION_RESULT,
+    DEFAULT_OPENID_CONFIG_RESPONSE,
+    NetworkUtils,
+} from "../Constants.js";
+
+const clientConfig = {
+    auth: {
+        clientId: "client_id",
+        authority: "https://login.microsoftonline.com/tenant_id",
+        knownAuthorities: ["https://login.microsoftonline.com/tenant_id"],
+        clientSecret: "client_secret",
+    },
+    system: {
+        networkClient: new class CustomHttpClient {
+            sendGetRequestAsync(url, options, cancellationToken) {
+                return new Promise((resolve, reject) => {
+                    const networkResponse = NetworkUtils.getNetworkResponse(
+                        DEFAULT_OPENID_CONFIG_RESPONSE.headers,
+                        DEFAULT_OPENID_CONFIG_RESPONSE.body,
+                        DEFAULT_OPENID_CONFIG_RESPONSE.status,
+                    );
+                    resolve(networkResponse);
+                });
+            }
+            sendPostRequestAsync(url, options) {
+                return new Promise((resolve, _reject) => {
+                    const networkResponse = NetworkUtils.getNetworkResponse(
+                        CONFIDENTIAL_CLIENT_AUTHENTICATION_RESULT.headers,
+                        CONFIDENTIAL_CLIENT_AUTHENTICATION_RESULT.body,
+                        CONFIDENTIAL_CLIENT_AUTHENTICATION_RESULT.status,
+                    );
+                    resolve(networkResponse);
+                });
+            }
+        }
+    },
+};
+
+const NUM_CACHE_ITEMS = 10;
+
+const confidentialClientApplication = new msal.ConfidentialClientApplication(clientConfig);
+const firstResourceRequest = {
+    scopes: ["resource-1/.default"],
+};
+const lastResourceRequest = {
+    scopes: [`resource-${NUM_CACHE_ITEMS}/.default`],
+};
+
+(async () => {
+    // pre populate the cache
+    for (let i = 1; i <= NUM_CACHE_ITEMS; i++) {
+        const request = {
+            scopes: [`resource-${i}/.default`],
+        };
+        await confidentialClientApplication.acquireTokenByClientCredential(request);
+    }
+
+    const suite = new benchmark.Suite();
+    suite
+        .add("ConfidentialClientApplication#acquireTokenByClientCredential-fromCache-resourceIsFirstItemInTheCache", {
+            "fn": async () => {
+                await confidentialClientApplication.acquireTokenByClientCredential(firstResourceRequest);
+            },
+            "minSamples": 150,
+        })
+        .add("ConfidentialClientApplication#acquireTokenByClientCredential-fromCache-resourceIsLastItemInTheCache", {
+            "fn": async () => {
+                await confidentialClientApplication.acquireTokenByClientCredential(lastResourceRequest);
+            },
+            "minSamples": 150,
+        })
+        .on("cycle", (event) => {
+            // eslint-disable-next-line no-console
+            console.log(String(event.target));
+        })
+        .run({ "async": true });
+})();

regression-tests/msal-node/client-credential/package.json

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+{
+  "name": "client-credential",
+  "version": "1.0.0",
+  "description": "Client Credential Regression Test",
+  "main": "index.js",
+  "type": "module",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "MIT",
+  "dependencies": {
+    "@azure/msal-node": "^2.0.0",
+    "benchmark": "^2.1.4"
+  }
+}