From 8eaa3fb57d7d5161c1eaaa80df11e299f189c952 Mon Sep 17 00:00:00 2001
From: Benedicte Raae <raae@raae.codes>
Date: Sun, 5 Dec 2021 12:31:37 +0100
Subject: [PATCH] fix: season bug, closes #26 (#27)

* test: add failing test

* fix: add 1 year to date and check within interval
---
 plugin/gatsby-browser.js      |  9 +++++++--
 plugin/gatsby-browser.test.js | 14 ++++++++++++++
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/plugin/gatsby-browser.js b/plugin/gatsby-browser.js
index 42cffb6..2ca6225 100644
--- a/plugin/gatsby-browser.js
+++ b/plugin/gatsby-browser.js
@@ -22,10 +22,15 @@ export const isSeason = (date, { start, end }) => {
       endDate = addYears(endDate, 1);
     }
 
-    return isWithinInterval(date, {
+    const interval = {
       start: startDate,
       end: endDate,
-    });
+    };
+
+    return (
+      isWithinInterval(date, interval) ||
+      isWithinInterval(addYears(date, 1), interval)
+    );
   } catch (error) {
     console.warn(
       "Problem with @raae/gatsby-plugin-let-it-snow season configuration:",
diff --git a/plugin/gatsby-browser.test.js b/plugin/gatsby-browser.test.js
index 455670a..0943694 100644
--- a/plugin/gatsby-browser.test.js
+++ b/plugin/gatsby-browser.test.js
@@ -8,6 +8,20 @@ describe("isSeason", () => {
         end: "2026-01-10",
       })
     ).toBe(true);
+
+    expect(
+      isSeason(new Date("January 1"), {
+        start: "2021-12-01",
+        end: "2026-01-10",
+      })
+    ).toBe(true);
+
+    expect(
+      isSeason(new Date("May 17"), {
+        start: "2021-05-01",
+        end: "2026-06-10",
+      })
+    ).toBe(true);
   });
 
   it("outside season even with mismatching years", () => {