add test case

oxc-project · Nov 4, 2024 · b6f735b · b6f735b
1 parent 310dc5c
commit b6f735b
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Showing 2 changed files with 11 additions and 0 deletions.
diff --git a/crates/oxc_linter/src/rules/unicorn/prefer_array_flat.rs b/crates/oxc_linter/src/rules/unicorn/prefer_array_flat.rs
@@ -302,6 +302,7 @@ fn test() {
         r"array.flatMap(() => x)",
         r"array.flatMap((x, y) => x)",
         r"array.flatMap(x => y)",
+        r"(array?.flatMap)?.(x => y)",
         r"new array.reduce((a, b) => a.concat(b), [])",
         r"array.reduce",
         r"reduce((a, b) => a.concat(b), [])",
@@ -388,6 +389,7 @@ fn test() {
 
     let fail = vec![
         r"array.flatMap(x => x)",
+        r"(array?.flatMap)?.(x => x)",
         r"function foo(){return[].flatMap(x => x)}",
         r"foo.flatMap(x => x) instanceof Array",
         r"array.reduce((a, b) => a.concat(b), [])",

diff --git a/crates/oxc_linter/src/snapshots/prefer_array_flat.snap b/crates/oxc_linter/src/snapshots/prefer_array_flat.snap
@@ -1,5 +1,7 @@
 ---
 source: crates/oxc_linter/src/tester.rs
+assertion_line: 353
+snapshot_kind: text
 ---
   ⚠ eslint-plugin-unicorn(prefer-array-flat): Prefer Array#flat() over legacy techniques to flatten arrays.
    ╭─[prefer_array_flat.tsx:1:1]
@@ -8,6 +10,13 @@ source: crates/oxc_linter/src/tester.rs
    ╰────
   help: Call `.flat()` on the array instead.
 
+  ⚠ eslint-plugin-unicorn(prefer-array-flat): Prefer Array#flat() over legacy techniques to flatten arrays.
+   ╭─[prefer_array_flat.tsx:1:1]
+ 1 │ (array?.flatMap)?.(x => x)
+   · ──────────────────────────
+   ╰────
+  help: Call `.flat()` on the array instead.
+
   ⚠ eslint-plugin-unicorn(prefer-array-flat): Prefer Array#flat() over legacy techniques to flatten arrays.
    ╭─[prefer_array_flat.tsx:1:22]
  1 │ function foo(){return[].flatMap(x => x)}