Add tests for failedSeedPhraseRequirements

app/components/Views/ImportFromSeed/index.js

@@ -30,6 +30,7 @@ import TermsAndConditions from '../TermsAndConditions';
 import zxcvbn from 'zxcvbn';
 import Icon from 'react-native-vector-icons/FontAwesome';
 import Device from '../../../util/Device';
+import { failedSeedPhraseRequirements } from '../../../util/validators';
 import { OutlinedTextField } from 'react-native-material-textfield';
 import {
 	BIOMETRY_CHOICE,
@@ -168,11 +169,6 @@ const styles = StyleSheet.create({
 
 const PASSCODE_NOT_SET_ERROR = 'Error: Passcode not set.';
 
-const failedSeedPhraseRequirements = seed => {
-	const wordCount = seed.split(/\s/u).length;
-	return wordCount % 3 !== 0 || wordCount > 24 || wordCount < 12;
-};
-
 /**
  * View where users can set restore their account
  * using a seed phrase

app/util/validators.js

@@ -0,0 +1,5 @@
+// eslint-disable-next-line import/prefer-default-export
+export const failedSeedPhraseRequirements = seed => {
+	const wordCount = seed.split(/\s/u).length;
+	return wordCount % 3 !== 0 || wordCount > 24 || wordCount < 12;
+};

app/util/validators.test.js

@@ -0,0 +1,24 @@
+import { failedSeedPhraseRequirements } from './validators';
+
+const VALID_24 =
+	'verb middle giant soon wage common wide tool gentle garlic issue nut retreat until album recall expire bronze bundle live accident expect dry cook';
+const VALID_12 = VALID_24.split(' ')
+	.splice(0, 12)
+	.join(' ');
+
+describe('failedSeedPhraseRequirements', () => {
+	it('Should pass for 12 word mnemonic', () => {
+		expect(failedSeedPhraseRequirements(VALID_12)).toEqual(false);
+	});
+	it('Should pass for 24 word mnemonic', () => {
+		expect(failedSeedPhraseRequirements(VALID_24)).toEqual(false);
+	});
+	it('Should fail for 12 + 1 word mnemonic', () => {
+		const plus_one = VALID_12 + ' lol';
+		expect(failedSeedPhraseRequirements(plus_one)).toEqual(true);
+	});
+	it('Should fail for 24 + 1 word mnemonic', () => {
+		const plus_one = VALID_24 + ' lol';
+		expect(failedSeedPhraseRequirements(plus_one)).toEqual(true);
+	});
+});