Prevent `RangeError` for `FinderMethods#exists?`

`FinderMethods#exists?` should return a boolean rather than raising an
exception.

`UniquenessValidator#build_relation` catches a `RangeError` because it
includes type casting due to a string value truncation. But a string
value truncation was removed at #23523 then type casting in
`build_relation` is no longer necessary. aa06231 removes type casting in
`build_relation` then a `RangeError` moves to `relation.exists?`.

This change will remove the catching a `RangeError`.

1 files changed, 2 insertions, 4 deletions

diff --git a/activerecord/test/cases/finder_test.rb b/activerecord/test/cases/finder_test.rb
index 374a8ba199..6eaaa30cd0 100644
--- a/activerecord/test/cases/finder_test.rb
+++ b/activerecord/test/cases/finder_test.rb
@@ -173,11 +173,9 @@ class FinderTest < ActiveRecord::TestCase
     end
   end
 
-  def test_exists_fails_when_parameter_has_invalid_type
-    assert_raises(ActiveModel::RangeError) do
-      assert_equal false, Topic.exists?(("9"*53).to_i) # number that's bigger than int
-    end
+  def test_exists_returns_false_when_parameter_has_invalid_type
     assert_equal false, Topic.exists?("foo")
+    assert_equal false, Topic.exists?(("9"*53).to_i) # number that's bigger than int
   end
 
   def test_exists_does_not_select_columns_without_alias