1 files changed, 19 insertions, 0 deletions
diff --git a/__tests__/lib/errors.test.ts b/__tests__/lib/errors.test.ts
new file mode 100644
index 000000000..b9549e6d8
--- /dev/null
+++ b/__tests__/lib/errors.test.ts
@@ -0,0 +1,19 @@
+import {isNetworkError} from '../../src/lib/errors'
+
+describe('isNetworkError', () => {
+  const inputs = [
+    'TypeError: Network request failed',
+    'Uncaught TypeError: Cannot read property x of undefined',
+    'Uncaught RangeError',
+    'Error: Aborted',
+  ]
+  const outputs = [true, false, false, true]
+
+  it('correctly distinguishes network errors', () => {
+    for (let i = 0; i < inputs.length; i++) {
+      const input = inputs[i]
+      const result = isNetworkError(input)
+      expect(result).toEqual(outputs[i])
+    }
+  })
+})