Clean up test

Cargo.lock

@@ -36,6 +36,7 @@ version = "0.1.0"
 dependencies = [
  "console_error_panic_hook",
  "getrandom",
+ "indoc",
  "scraper",
  "serde",
  "serde_json",
@@ -355,6 +356,12 @@ dependencies = [
  "unicode-normalization",
 ]
 
+[[package]]
+name = "indoc"
+version = "2.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b248f5224d1d606005e02c97f5aa4e88eeb230488bcc03bc9ca4d7991399f2b5"
+
 [[package]]
 name = "itoa"
 version = "1.0.11"

Cargo.toml

@@ -21,3 +21,6 @@ scraper = "0.19.0"
 # We don't use getrandom, but we enable the "js" feature to enable
 # WebAssembly support.
 getrandom = { version = "0.2", features = ["js"] }
+
+[dev-dependencies]
+indoc = "2.0.5"

src/diff.rs

@@ -45,6 +45,7 @@ pub fn diff_items(old: ShopItem, new: ShopItem) -> Option<String> {
 #[cfg(test)]
 mod test {
     use super::*;
+    use indoc::indoc;
 
     #[test]
     fn price_diff() {
@@ -62,7 +63,13 @@ mod test {
 
         assert_eq!(
             diff_items(old, new),
-            Some("*Item updated*\n*Name:* Test\n*Price:* 1 → 2".into())
+            Some(
+                indoc! {"
+                *Item updated*
+                *Name:* Test
+                *Price:* 1 → 2"}
+                .into()
+            )
         );
     }
 }