Add isBetween method to date extension

CHANGELOG.md

@@ -11,7 +11,8 @@ All notable changes to this project will be documented in this file.
 > N/A
 >
 > ### Enhancements
-> N/A
+> - New **Date** extensions
+>    - added `isBetween(_ startDate: Date, _ endDate: Date, includeBounds: Bool = false) -> Bool` method to check if a date is between two other dates.
 >
 > ### Bugfixes
 > N/A

Sources/Extensions/Foundation/DateExtensions.swift

@@ -709,7 +709,21 @@ public extension Date {
 	public func daysSince(_ date: Date) -> Double {
 		return self.timeIntervalSince(date)/(3600*24)
 	}
-
+
+    /// SwifterSwift: check if a date is between two other dates
+    ///
+    /// - Parameter startDate: start date to compare self to.
+    /// - Parameter endDate: endDate date to compare self to.
+    /// - Parameter includeBounds: true if the start and end date should be included (default is false)
+    /// - Returns: true if the date is between the two given dates.
+    public func isBetween(_ startDate: Date, _ endDate: Date, includeBounds: Bool = false) -> Bool {
+        if includeBounds {
+            return startDate.compare(self).rawValue * self.compare(endDate).rawValue >= 0
+        } else {
+            return startDate.compare(self).rawValue * self.compare(endDate).rawValue > 0
+        }
+    }
+
 }
 
 

Tests/FoundationTests/DateExtensionsTests.swift

@@ -683,4 +683,29 @@ class DateExtensionsTests: XCTestCase {
 		XCTAssertEqual(date, dateFromUnixTimestamp)
 	}
 
+    func testIfDateIsBetween() {
+        var date = Date(timeIntervalSince1970: 512) // 1970-01-01T00:08:32.000Z
+        let startDate = Date(timeIntervalSince1970: 511)
+        let endDate = Date(timeIntervalSince1970: 513)
+        XCTAssertTrue(date.isBetween(startDate, endDate))
+
+        date = Date(timeIntervalSince1970: 511)
+        XCTAssertTrue(date.isBetween(startDate, endDate, includeBounds: true))
+
+        date = Date(timeIntervalSince1970: 513)
+        XCTAssertTrue(date.isBetween(startDate, endDate, includeBounds: true))
+
+        date = Date(timeIntervalSince1970: 511)
+        XCTAssertFalse(date.isBetween(startDate, endDate))
+
+        date = Date(timeIntervalSince1970: 513)
+        XCTAssertFalse(date.isBetween(startDate, endDate))
+
+        date = Date(timeIntervalSince1970: 230)
+        XCTAssertFalse(date.isBetween(startDate, endDate))
+
+        date = Date(timeIntervalSince1970: 550)
+        XCTAssertFalse(date.isBetween(startDate, endDate))
+    }
+
 }