Handle AlreadyExistsError on user creation with non-unique email

atst/routes/errors.py

@@ -9,12 +9,12 @@ def make_error_pages(app):
     # pylint: disable=unused-variable
     def not_found(e):
         app.logger.error(e.message)
-        return render_template("not_found.html"), 404
+        return render_template("error.html", message="Not Found"), 404
 
     @app.errorhandler(exceptions.UnauthenticatedError)
     # pylint: disable=unused-variable
     def unauthorized(e):
         app.logger.error(e.message)
-        return render_template("unauthenticated.html"), 401
+        return render_template("error.html", message="Log in Failed"), 401
 
     return app

atst/routes/workspaces.py

@@ -10,7 +10,7 @@ from flask import (
     url_for,
 )
 
-from atst.domain.exceptions import UnauthorizedError
+from atst.domain.exceptions import UnauthorizedError, AlreadyExistsError
 from atst.domain.projects import Projects
 from atst.domain.reports import Reports
 from atst.domain.workspaces import Workspaces
@@ -200,14 +200,19 @@ def create_member(workspace_id):
     form = NewMemberForm(http_request.form)
 
     if form.validate():
-        new_member = Workspaces.create_member(g.current_user, workspace, form.data)
-        return redirect(
-            url_for(
-                "workspaces.workspace_members",
-                workspace_id=workspace.id,
-                newMemberName=new_member.user_name,
+        try:
+            new_member = Workspaces.create_member(g.current_user, workspace, form.data)
+            return redirect(
+                url_for(
+                    "workspaces.workspace_members",
+                    workspace_id=workspace.id,
+                    newMemberName=new_member.user_name,
+                )
+            )
+        except AlreadyExistsError:
+            return render_template(
+                "error.html", message="There was an error processing your request."
             )
-        )
     else:
         return render_template(
             "workspaces/members/new.html", workspace=workspace, form=form