up n_m

node_modules/react-loadable-ssr-addon-v5-slorber/source/utils/unique.test.js

@@ -0,0 +1,22 @@
+import test from 'ava';
+import unique from './unique';
+
+test('it filters duplicated entries', (t) => {
+  const duplicated = ['two', 'four'];
+  const raw = ['one', 'two', 'three', 'four'];
+  const filtered = unique([...raw, ...duplicated]);
+
+  duplicated.forEach((dup) => {
+    t.true(filtered.filter((item) => item === dup).length === 1);
+  });
+});
+
+test('should work with null/undefined values', (t) => {
+  const falsy = [null, undefined];
+  const raw = ['one', 'two', 'three', 'four'];
+  const filtered = unique([...raw, ...falsy]);
+
+  falsy.forEach((value) => {
+    t.true(filtered.includes(value));
+  });
+});