[PM-8027] Fixing issue with username fields not qualifyng as a valid login field if a viewable password field is not present

apps/browser/src/autofill/services/inline-menu-field-qualification.service.spec.ts

@@ -446,6 +446,63 @@ describe("InlineMenuFieldQualificationService", () => {
               inlineMenuFieldQualificationService.isFieldForLoginForm(field, pageDetails),
             ).toBe(false);
           });
+
+          it("is structured on a page with multiple viewable password field", () => {
+            const field = mock<AutofillField>({
+              type: "text",
+              autoCompleteType: "",
+              htmlID: "user-username",
+              htmlName: "user-username",
+              placeholder: "user-username",
+              form: "validFormId",
+            });
+            const passwordField = mock<AutofillField>({
+              type: "password",
+              autoCompleteType: "current-password",
+              htmlID: "user-password",
+              htmlName: "user-password",
+              placeholder: "user-password",
+              form: "validFormId",
+            });
+            const secondPasswordField = mock<AutofillField>({
+              type: "password",
+              autoCompleteType: "current-password",
+              htmlID: "some-other-password",
+              htmlName: "some-other-password",
+              placeholder: "some-other-password",
+              form: "validFormId",
+            });
+            pageDetails.fields = [field, passwordField, secondPasswordField];
+
+            expect(
+              inlineMenuFieldQualificationService.isFieldForLoginForm(field, pageDetails),
+            ).toBe(false);
+          });
+
+          it("is structured on a page with a with no visible password fields and but contains a disabled autocomplete type", () => {
+            const field = mock<AutofillField>({
+              type: "text",
+              autoCompleteType: "off",
+              htmlID: "user-username",
+              htmlName: "user-username",
+              placeholder: "user-username",
+              form: "validFormId",
+            });
+            const passwordField = mock<AutofillField>({
+              type: "password",
+              autoCompleteType: "current-password",
+              htmlID: "user-password",
+              htmlName: "user-password",
+              placeholder: "user-password",
+              form: "validFormId",
+              viewable: false,
+            });
+            pageDetails.fields = [field, passwordField];
+
+            expect(
+              inlineMenuFieldQualificationService.isFieldForLoginForm(field, pageDetails),
+            ).toBe(false);
+          });
         });
       });
 
@@ -549,6 +606,31 @@ describe("InlineMenuFieldQualificationService", () => {
               inlineMenuFieldQualificationService.isFieldForLoginForm(field, pageDetails),
             ).toBe(true);
           });
+
+          it("is structured on a page with a with no visible password fields and a non-disabled autocomplete type", () => {
+            const field = mock<AutofillField>({
+              type: "text",
+              autoCompleteType: "",
+              htmlID: "user-username",
+              htmlName: "user-username",
+              placeholder: "user-username",
+              form: "validFormId",
+            });
+            const passwordField = mock<AutofillField>({
+              type: "password",
+              autoCompleteType: "current-password",
+              htmlID: "user-password",
+              htmlName: "user-password",
+              placeholder: "user-password",
+              form: "validFormId",
+              viewable: false,
+            });
+            pageDetails.fields = [field, passwordField];
+
+            expect(
+              inlineMenuFieldQualificationService.isFieldForLoginForm(field, pageDetails),
+            ).toBe(true);
+          });
         });
       });
     });

apps/browser/src/autofill/services/inline-menu-field-qualification.service.ts

@@ -192,12 +192,22 @@ export class InlineMenuFieldQualificationService
 
     // If a single password field exists within the page details, and that password field is part of
     // the same form as the provided field, we should assume that the field is part of a login form.
-    // If multiple visible password fields exist within the page details, we need to assume that the
-    // provided field is part of an account creation form.
     const visiblePasswordFieldsInPageDetails = passwordFieldsInPageDetails.filter(
       (passwordField) => passwordField.form === field.form && passwordField.viewable,
     );
-    return visiblePasswordFieldsInPageDetails.length === 1;
+    if (visiblePasswordFieldsInPageDetails.length === 1) {
+      return true;
+    }
+
+    // If multiple visible password fields exist within the page details, we need to assume that the
+    // provided field is part of an account creation form.
+    if (visiblePasswordFieldsInPageDetails.length > 1) {
+      return false;
+    }
+
+    // If no visible password fields are found, this field might be part of a multipart form.
+    // Check for an invalid autocompleteType to determine if the field is part of a login form.
+    return !this.autocompleteDisabledValues.has(field.autoCompleteType);
   }
 
   /**