Add Zero and One providers

Author: gonzalezreal

README.md

@@ -76,6 +76,9 @@ It provides an empty instance of a `String`, `Array` or any type that implements
 ### `True` and `False`
 Provide `true` and `false` respectively for `Bool` properties.
 
+### `Zero` and `One`
+Provide `0` and `1` respectively for `Int` properties.
+
 ### `FirstCase`
 It provides the first case of an `enum` type as the default value. The `enum` must implement the `CaseIterable` protocol.
 

Sources/DefaultCodable/DefaultValueProvider.swift

@@ -21,3 +21,11 @@ public enum Empty<A>: DefaultValueProvider where A: Codable, A: Equatable, A: Ra
 public enum FirstCase<A>: DefaultValueProvider where A: Codable, A: Equatable, A: CaseIterable {
     public static var `default`: A { A.allCases.first! }
 }
+
+public enum Zero: DefaultValueProvider {
+    public static let `default` = 0
+}
+
+public enum One: DefaultValueProvider {
+    public static let `default` = 1
+}

Tests/DefaultCodableTests/XCTestManifests.swift

@@ -2,7 +2,7 @@ import XCTest
 
 #if !canImport(ObjectiveC)
     public func allTests() -> [XCTestCaseEntry] {
-        return [
+        [
             testCase(DefaultTests.allTests),
         ]
     }