login

package.json

@@ -15,6 +15,7 @@
     "cypress": "^3.6.1",
     "eslint": "^6.6.0",
     "eslint-config-prettier": "^6.5.0",
-    "prettier": "^1.19.1"
+    "prettier": "^1.19.1",
+    "typescript": "^3.7.2"
   }
 }

src/index.d.ts

@@ -6,11 +6,42 @@ declare namespace Cypress {
     realm: string;
     redirect_uri: string;
   }
+  interface Login {
+    root: string;
+    realm: string;
+    username: string;
+    password: string;
+    client_id: string;
+    redirect_uri: string;
+  }
   interface Chainable {
     /**
-     * Command to sign out of keycloak
-     * @example cy.logout({ realm: "..", redirect_uri: "...", root: "..." })
+     * Command to sign out of Keycloak
+     * @example cy.logout({
+     *    root: "...",
+     *    realm: "..",
+     *    redirect_uri: "..."
+     * });
      */
     logout({ root, realm, redirect_uri }: Logout): Chainable;
+    /**
+     * Command to sign into Keycloak
+     * @example cy.logout({
+     *    root: "...",
+     *    realm: "..",
+     *    username: "...",
+     *    password: "...",
+     *    client_id: "...",
+     *    redirect_uri: "..."
+     * });
+     */
+    login({
+      root,
+      realm,
+      username,
+      password,
+      client_id,
+      redirect_uri,
+    }: Login): Chainable;
   }
 }

src/index.ts

@@ -1 +1,2 @@
+import './login';
 import './logout';

src/login.ts

@@ -0,0 +1,53 @@
+function createUUID(): string {
+  const s: string[] = [];
+  const hexDigits = '0123456789abcdef';
+
+  for (let i = 0; i < 36; i++) {
+    s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
+  }
+
+  s[14] = '4';
+  s[19] = hexDigits.substr((parseInt(s[19]) & 0x3) | 0x8, 1);
+  s[8] = s[13] = s[18] = s[23] = '-';
+
+  return s.join('');
+}
+
+Cypress.Commands.add(
+  'login',
+  ({ root, realm, username, password, client_id, redirect_uri }) => {
+    return cy
+      .request({
+        url: `${root}/auth/realms/${realm}/protocol/openid-connect/auth`,
+        qs: {
+          client_id,
+          redirect_uri,
+          scope: 'openid',
+          state: createUUID(),
+          nonce: createUUID(),
+          response_type: 'code',
+          response_mode: 'fragment',
+        },
+      })
+      .then(response => {
+        const html = document.createElement('html');
+        html.innerHTML = response.body;
+
+        const form = html.getElementsByTagName('form');
+        const isAuthorized = !form.length;
+
+        if (!isAuthorized) {
+          return cy.request({
+            form: true,
+            method: 'POST',
+            url: form[0].action,
+            followRedirect: false,
+            body: {
+              username: username,
+              password: password,
+            },
+          });
+        }
+      });
+  }
+);

yarn.lock

@@ -1791,6 +1791,11 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
+typescript@^3.7.2:
+  version "3.7.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.2.tgz#27e489b95fa5909445e9fef5ee48d81697ad18fb"
+  integrity sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==
+
 universalify@^0.1.0:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/universalify/-/universalify-0.1.2.tgz#b646f69be3942dabcecc9d6639c80dc105efaa66"