Add email_validator_spec

corehq/apps/hqwebapp/static/hqwebapp/spec/bootstrap3/main.js

@@ -1,6 +1,7 @@
 import hqMocha from "mocha/js/main";
 
 import "hqwebapp/spec/assert_properties_spec";
+import "hqwebapp/spec/email_validator_spec";
 import "hqwebapp/spec/bootstrap3/inactivity_spec";
 import "hqwebapp/spec/urllib_spec";
 import "hqwebapp/spec/bootstrap3/widgets_spec";

corehq/apps/hqwebapp/static/hqwebapp/spec/bootstrap5/main.js

@@ -1,6 +1,7 @@
 import hqMocha from "mocha/js/main";
 
 import "hqwebapp/spec/assert_properties_spec";
+import "hqwebapp/spec/email_validator_spec";
 import "hqwebapp/spec/bootstrap5/inactivity_spec";
 import "hqwebapp/spec/urllib_spec";
 import "hqwebapp/spec/bootstrap5/widgets_spec";

corehq/apps/hqwebapp/static/hqwebapp/spec/email_validator_spec.js

@@ -0,0 +1,83 @@
+/* eslint-env mocha */
+hqDefine("hqwebapp/spec/email_validator_spec", [
+    'hqwebapp/js/constants',
+], function (
+    constants,
+) {
+    describe('email_validator', function () {
+        const re = constants.EMAIL_VALIDATION_REGEX;
+        const testEmail = email => re.test(email);
+
+        it('should allow simple email addresses', function () {
+            assert.ok(testEmail('[email protected]'));
+        });
+
+        it('should allow capital letters in the local part', function () {
+            assert.ok(testEmail('[email protected]'));
+            assert.ok(testEmail('[email protected]'));
+        });
+
+        it('should allow capital letters in the domain part', function () {
+            assert.ok(testEmail('[email protected]'));
+            assert.ok(testEmail('[email protected]'));
+        });
+
+        it('should allow digits in the local part', function () {
+            assert.ok(testEmail('[email protected]'));
+        });
+
+        it('should allow specified special characters in the local part', function () {
+            assert.ok(testEmail('.\x01!#$%&"\'*+/=?^_`{|}[email protected]'));
+        });
+
+        it('should allow subdomains', function () {
+            assert.ok(testEmail('[email protected]'));
+        });
+
+        it('should allow hyphens in domain names', function () {
+            assert.ok(testEmail('[email protected]'));
+        });
+
+        it('should allow IP addresses in brackets as the domain', function () {
+            assert.ok(testEmail('whosaidthiswasok@[127.0.0.1]'));
+        });
+
+        it('should reject missing @ symbol', function () {
+            assert.notOk(testEmail('notanemail'));
+        });
+
+        it('should reject missing local part', function () {
+            assert.notOk(testEmail('@example.com'));
+        });
+
+        it('should reject missing top-level domain', function () {
+            assert.notOk(testEmail('nothing@toseehere'));
+            assert.notOk(testEmail('noteven@toseehere.'));
+        });
+
+        it('should reject invalid characters in the domain part', function () {
+            const emails = [
+                // allowed in local part but not domain
+                'me@ex\x01ample.com',
+                'me@ex!ample.com',
+                'me@ex#ample.com',
+                'me@ex$ample.com',
+                'me@ex%ample.com',
+                'me@ex&ample.com',
+                'me@ex"ample.com',
+                'me@ex\'ample.com',
+                'me@ex*ample.com',
+                'me@ex+ample.com',
+                'me@ex/ample.com',
+                'me@ex=ample.com',
+                'me@ex?ample.com',
+                'me@ex^ample.com',
+                'me@ex_ample.com',
+                'me@ex`ample.com',
+                'me@ex{ample}.com',
+                'me@ex|ample.com',
+            ];
+            emails.forEach(email => assert.notOk(testEmail(email)));
+        });
+    });
+});