Add tests

Author: Tim Vermeulen

Tests/SwiftAlgorithmsTests/ChunkedTests.swift

@@ -147,6 +147,24 @@ final class ChunkedTests: XCTestCase {
   }
 
   func testEvenChunks() {
+    XCTAssertEqualSequences(
+      (0..<10).evenlyChunked(into: 4),
+      [0..<3, 3..<6, 6..<8, 8..<10])
+    
+    XCTAssertEqualSequences(
+      (0..<3).evenlyChunked(into: 5),
+      [0..<1, 1..<2, 2..<3, 3..<3, 3..<3])
+    
+    XCTAssertEqualSequences(
+      "".evenlyChunked(into: 0),
+      [])
+    
+    XCTAssertEqualSequences(
+      "".evenlyChunked(into: 1),
+      [""])
+  }
+  
+  func testEvenChunksIndexTraversals() {
     validateIndexTraversals(
       (0..<10).evenlyChunked(into: 1),
       (0..<10).evenlyChunked(into: 2),