From c375292525aa8e6e0ac620a027114bfb5b680360 Mon Sep 17 00:00:00 2001
From: Justin Edmund <justin@jedmund.com>
Date: Mon, 10 Feb 2025 05:35:55 -0800
Subject: [PATCH] Create have_error_on.rb

---
 spec/support/matchers/have_error_on.rb | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 spec/support/matchers/have_error_on.rb

diff --git a/spec/support/matchers/have_error_on.rb b/spec/support/matchers/have_error_on.rb
new file mode 100644
index 0000000..0919cd1
--- /dev/null
+++ b/spec/support/matchers/have_error_on.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+# This custom matcher checks that a model's errors on a given attribute include a specific phrase.
+RSpec::Matchers.define :have_error_on do |attribute, expected_phrase|
+  match do |model|
+    model.valid? && model.errors[attribute].any? { |msg| msg.include?(expected_phrase) }
+  end
+
+  failure_message do |model|
+    "expected errors on #{attribute} to include '#{expected_phrase}', but got: #{model.errors[attribute].join(', ')}"
+  end
+end