Learning Dart

dart/armstrong-numbers/test/armstrong_numbers_test.dart

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+import 'package:armstrong_numbers/armstrong_numbers.dart';
+import 'package:test/test.dart';
+
+void main() {
+  final armstrongNumbers = ArmstrongNumbers();
+
+  group('ArmstrongNumbers', () {
+    test('Zero is an Armstrong number', () {
+      final result = armstrongNumbers.isArmstrongNumber('0');
+      expect(result, equals(true));
+    }, skip: false);
+
+    test('Single-digit numbers are Armstrong numbers', () {
+      final result = armstrongNumbers.isArmstrongNumber('5');
+      expect(result, equals(true));
+    }, skip: false);
+
+    test('There are no two-digit Armstrong numbers', () {
+      final result = armstrongNumbers.isArmstrongNumber('10');
+      expect(result, equals(false));
+    }, skip: false);
+
+    test('Three-digit number that is an Armstrong number', () {
+      final result = armstrongNumbers.isArmstrongNumber('153');
+      expect(result, equals(true));
+    }, skip: false);
+
+    test('Three-digit number that is not an Armstrong number', () {
+      final result = armstrongNumbers.isArmstrongNumber('100');
+      expect(result, equals(false));
+    }, skip: false);
+
+    test('Four-digit number that is an Armstrong number', () {
+      final result = armstrongNumbers.isArmstrongNumber('9474');
+      expect(result, equals(true));
+    }, skip: false);
+
+    test('Four-digit number that is not an Armstrong number', () {
+      final result = armstrongNumbers.isArmstrongNumber('9475');
+      expect(result, equals(false));
+    }, skip: false);
+
+    test('Seven-digit number that is an Armstrong number', () {
+      final result = armstrongNumbers.isArmstrongNumber('9926315');
+      expect(result, equals(true));
+    }, skip: false);
+
+    test('Seven-digit number that is not an Armstrong number', () {
+      final result = armstrongNumbers.isArmstrongNumber('9926314');
+      expect(result, equals(false));
+    }, skip: false);
+
+    test('Armstrong number containing seven zeroes', () {
+      final result = armstrongNumbers.isArmstrongNumber('186709961001538790100634132976990');
+      expect(result, equals(true));
+    }, skip: false);
+
+    test('The largest and last Armstrong number', () {
+      final result = armstrongNumbers.isArmstrongNumber('115132219018763992565095597973971522401');
+      expect(result, equals(true));
+    }, skip: false);
+  });
+}