Add Duration#before and #after as aliases for #ago and #since

It's common in test cases at my job to have code like this:

    let(:today) { customer_start_date + 2.weeks }
    let(:earlier_date) { today - 5.days }

With this change, we can instead write

    let(:today) { 2.weeks.after(customer_start_date) }
    let(:earlier_date) { 5.days.before(today) }

Closes #27721

1 files changed, 16 insertions, 0 deletions

diff --git a/activesupport/CHANGELOG.md b/activesupport/CHANGELOG.md
index 2f08d8bc82..0614cdaabd 100644
--- a/activesupport/CHANGELOG.md
+++ b/activesupport/CHANGELOG.md
@@ -1,3 +1,19 @@
+*   Add `ActiveSupport::Duration#before` and `#after` as aliases for `#until` and `#since`
+
+    These read more like English and require less mental gymnastics to read and write.
+
+    Before:
+
+        2.weeks.since(customer_start_date)
+        5.days.until(today)
+
+    After:
+
+        2.weeks.after(customer_start_date)
+        5.days.before(today)
+
+    *Nick Johnstone*
+
 *   Soft-deprecated the top-level `HashWithIndifferentAccess` constant.
     `ActiveSupport::HashWithIndifferentAccess` should be used instead.