test: confirm that assert truncates long values

`assert` has code to truncate values that take more than 128 characters to display. Add a test for this functionality, as the code is not currently exercised in the existing tests. PR-URL: #8134 Reviewed-By: Michaël Zasso <[email protected]> Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: James M Snell <[email protected]>
nodejs · Oct 26, 2016 · ac83d19 · ac83d19
1 parent 06a1c9b
commit ac83d19
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/test/parallel/test-assert.js b/test/parallel/test-assert.js
@@ -526,4 +526,9 @@ testBlockTypeError(assert.doesNotThrow, undefined);
 assert.throws(() => { throw 'error'; }, (err) => err === 'error');
 assert.throws(() => { throw new Error(); }, (err) => err instanceof Error);
 
+// Long values should be truncated for display.
+assert.throws(() => {
+  assert.strictEqual('A'.repeat(1000), '');
+}, new RegExp(`^AssertionError: '${'A'.repeat(127)} === ''$`));
+
 console.log('All OK');