let enums throw if raw value is out of bounds

@@ -13,13 +13,14 @@ enum AddressType {
 
   factory AddressType.fromRawValue(int value) {
     switch (value) {
+      case 0:
+        return AddressType.unknown;
       case 1:
         return AddressType.work;
       case 2:
         return AddressType.home;
-      case 0:
       default:
-        return AddressType.unknown;
+        throw ArgumentError.value(value, 'value', 'Invalid raw value.');
     }
   }
 

@@ -49,6 +49,8 @@ enum BarcodeFormat {
 
   factory BarcodeFormat.fromRawValue(int value) {
     switch (value) {
+      case -1:
+        return BarcodeFormat.unknown;
       case 0:
         return BarcodeFormat.all;
       case 1:
@@ -77,9 +79,8 @@ enum BarcodeFormat {
         return BarcodeFormat.pdf417;
       case 4096:
         return BarcodeFormat.aztec;
-      case -1:
       default:
-        return BarcodeFormat.unknown;
+        throw ArgumentError.value(value, 'value', 'Invalid raw value.');
     }
   }
 

@@ -43,6 +43,8 @@ enum BarcodeType {
 
   factory BarcodeType.fromRawValue(int value) {
     switch (value) {
+      case 0:
+        return BarcodeType.unknown;
       case 1:
         return BarcodeType.contactInfo;
       case 2:
@@ -67,9 +69,8 @@ enum BarcodeType {
         return BarcodeType.calendarEvent;
       case 12:
         return BarcodeType.driverLicense;
-      case 0:
       default:
-        return BarcodeType.unknown;
+        throw ArgumentError.value(value, 'value', 'Invalid raw value.');
     }
   }
 

@@ -17,12 +17,12 @@ void main() {
       }
     });
 
-    test('invalid raw value creates unknown address type', () {
-      final AddressType negative = AddressType.fromRawValue(-1);
-      final AddressType outOfRange = AddressType.fromRawValue(3);
+    test('invalid raw value throws argument error', () {
+      const int negative = -1;
+      const int outOfRange = 3;
 
-      expect(negative, AddressType.unknown);
-      expect(outOfRange, AddressType.unknown);
+      expect(() => AddressType.fromRawValue(negative), throwsArgumentError);
+      expect(() => AddressType.fromRawValue(outOfRange), throwsArgumentError);
     });
 
     test('can be converted to raw value', () {

@@ -29,12 +29,12 @@ void main() {
       }
     });
 
-    test('invalid raw value creates unknown barcode format', () {
-      final BarcodeFormat negative = BarcodeFormat.fromRawValue(-2);
-      final BarcodeFormat outOfRange = BarcodeFormat.fromRawValue(4097);
+    test('invalid raw value throws argument error', () {
+      const int negative = -2;
+      const int outOfRange = 4097;
 
-      expect(negative, BarcodeFormat.unknown);
-      expect(outOfRange, BarcodeFormat.unknown);
+      expect(() => BarcodeFormat.fromRawValue(negative), throwsArgumentError);
+      expect(() => BarcodeFormat.fromRawValue(outOfRange), throwsArgumentError);
     });
 
     test('can be converted to raw value', () {

@@ -27,12 +27,12 @@ void main() {
       }
     });
 
-    test('invalid raw value creates unknown barcode type', () {
-      final BarcodeType negative = BarcodeType.fromRawValue(-1);
-      final BarcodeType outOfRange = BarcodeType.fromRawValue(13);
+    test('invalid raw value throws argument error', () {
+      const int negative = -1;
+      const int outOfRange = 13;
 
-      expect(negative, BarcodeType.unknown);
-      expect(outOfRange, BarcodeType.unknown);
+      expect(() => BarcodeType.fromRawValue(negative), throwsArgumentError);
+      expect(() => BarcodeType.fromRawValue(outOfRange), throwsArgumentError);
     });
 
     test('can be converted to raw value', () {

@@ -16,7 +16,7 @@ void main() {
       }
     });
 
-    test('invalid raw value throws assertion error', () {
+    test('invalid raw value throws argument error', () {
       const int negative = -1;
       const int outOfRange = 2;