Allow numberOrBooleanParser to parse string correctly. Improve error message in numberParser. Add env variable PARSE_SERVER_CLUSTER for cluster. Add tests (#3034)

spec/parsers.spec.js

@@ -0,0 +1,34 @@
+import {
+	numberParser,
+	numberOrBoolParser,
+	booleanParser,
+} from '../src/cli/utils/parsers';
+
+describe('parsers', () => {
+	it('parses correctly with numberParser', () => {
+		const parser = numberParser('key');
+		expect(parser(2)).toEqual(2);
+		expect(parser('2')).toEqual(2);
+		expect(() => {parser('string')}).toThrow();
+	});
+
+	it('parses correctly with numberOrBoolParser', () => {
+		const parser = numberOrBoolParser('key');
+		expect(parser(true)).toEqual(true);
+		expect(parser(false)).toEqual(false);
+		expect(parser('true')).toEqual(true);
+		expect(parser('false')).toEqual(false);
+		expect(parser(1)).toEqual(1);
+		expect(parser('1')).toEqual(1);
+	});
+
+	it('parses correctly with booleanParser', () => {
+		const parser = booleanParser;
+		expect(parser(true)).toEqual(true);
+		expect(parser(false)).toEqual(false);
+		expect(parser('true')).toEqual(true);
+		expect(parser('false')).toEqual(false);
+		expect(parser(1)).toEqual(true);
+		expect(parser(2)).toEqual(false);
+	});
+});