From 0feb63518059092507ed1d6c48148e1864054e16 Mon Sep 17 00:00:00 2001
From: Espen Hovlandsdal <espen@hovlandsdal.com>
Date: Wed, 30 Oct 2024 20:16:39 -0700
Subject: [PATCH] test: add tests for resettable format

---
 src/builder.ts                          |  2 +-
 test/__snapshots__/builder.test.ts.snap |  4 ++++
 test/builder.test.ts                    | 10 ++++++++++
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/builder.ts b/src/builder.ts
index a08ee31..d337c7a 100644
--- a/src/builder.ts
+++ b/src/builder.ts
@@ -174,7 +174,7 @@ export class ImageUrlBuilder {
   }
 
   // Specify the image format of the image. 'jpg', 'pjpg', 'png', 'webp'
-  format(format?: ImageFormat) {
+  format(format?: ImageFormat | undefined) {
     return this.withOptions({format})
   }
 
diff --git a/test/__snapshots__/builder.test.ts.snap b/test/__snapshots__/builder.test.ts.snap
index fdeccca..8d5abc9 100644
--- a/test/__snapshots__/builder.test.ts.snap
+++ b/test/__snapshots__/builder.test.ts.snap
@@ -8,6 +8,10 @@ exports[`builder automatic format 1`] = `"auto=format"`;
 
 exports[`builder can be told to ignore hotspot 1`] = `"https://cdn.sanity.io/images/zp7mbokg/production/Tb9Ew8CXIwaY6R1kjMvI0uRR-2000x3000.jpg?w=100&h=80"`;
 
+exports[`builder can reset format 1`] = `""`;
+
+exports[`builder can set format 1`] = `"fm=jpg"`;
+
 exports[`builder can specify options with url params 1`] = `"https://cdn.sanity.io/images/zp7mbokg/production/Tb9Ew8CXIwaY6R1kjMvI0uRR-2000x3000.jpg?rect=200,300,1600,1200&w=320&h=240"`;
 
 exports[`builder constrains aspect ratio 1`] = `"https://cdn.sanity.io/images/zp7mbokg/production/Tb9Ew8CXIwaY6R1kjMvI0uRR-2000x3000.jpg?rect=200,300,1600,1280&w=100&h=80"`;
diff --git a/test/builder.test.ts b/test/builder.test.ts
index b3afd3e..3fa4e59 100644
--- a/test/builder.test.ts
+++ b/test/builder.test.ts
@@ -150,6 +150,16 @@ const cases = [
     url: stripPath(urlFor.image(noHotspotImage()).dpr(1).url()),
   },
 
+  {
+    name: 'can set format',
+    url: stripPath(urlFor.image(noHotspotImage()).format('jpg').url()),
+  },
+
+  {
+    name: 'can reset format',
+    url: stripPath(urlFor.image(noHotspotImage()).format('jpg').format(undefined).url()),
+  },
+
   {
     name: 'vanity name',
     url: urlFor.image(noHotspotImage()).vanityName('moo').url(),