[Test] Migrate to Swift testing for learnig

.github/workflows/swift.yml

@@ -10,7 +10,8 @@ jobs:
   Darwin:
 
     runs-on: macos-latest
-
+    env:
+      DEVELOPER_DIR: /Applications/Xcode_16.app/Contents/Developer
     steps:
     - uses: actions/checkout@v2
     - name: Build

Package.resolved

@@ -17,6 +17,15 @@
         "revision" : "8163295f6fe82356b0bcf8e1ab991645de17d096",
         "version" : "0.1.2"
       }
+    },
+    {
+      "identity" : "swift-numerics",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-numerics",
+      "state" : {
+        "revision" : "0a5bc04095a675662cf24757cc0640aa2204253b",
+        "version" : "1.0.2"
+      }
     }
   ],
   "version" : 2

Package.swift

@@ -17,7 +17,8 @@ let package = Package(
   dependencies: [
     // Dependencies declare other packages that this package depends on.
     // .package(url: /* package url */, from: "1.0.0"),
-    .package(url: "https://github.com/google/swift-benchmark", from: "0.1.2")
+    .package(url: "https://github.com/google/swift-benchmark", from: "0.1.2"),
+    .package(url: "https://github.com/apple/swift-numerics", from: "1.0.2")
   ],
   targets: [
     // Targets are the basic building blocks of a package. A target can define a module or a test suite.
@@ -30,6 +31,6 @@ let package = Package(
       dependencies: ["strings", .product(name: "Benchmark", package: "swift-benchmark")]),
     .testTarget(
       name: "stringsTests",
-      dependencies: ["strings"])
+      dependencies: ["strings", .product(name: "Numerics", package: "swift-numerics")])
   ]
 )

Sources/strings/FixedBitArray.swift

@@ -29,7 +29,7 @@ internal struct FixedBitArray {
     get {
       assert(0..<count ~= idx, "Out of bounds index!")
       let (pos, posIdx) = idx.quotientAndRemainder(dividingBy: FixedBitArray._bitsPerWord)
-      return _words.withUnsafeBufferPointer{ $0[pos] } & (1 << posIdx) != 0
+      return _words.withUnsafeBufferPointer { $0[pos] } & (1 << posIdx) != 0
     }
     set {
       assert(0..<count ~= idx, "Out of bounds index!")

Tests/stringsTests/DistanceExpectation.swift

@@ -0,0 +1,12 @@
+//
+//  DistanceExpectation.swift
+//  strings
+//
+//  Created by Luciano Almeida on 22/09/24.
+//
+
+struct DistanceExpectation<DistanceValue: Numeric> {
+  let source: String
+  let target: String
+  let expectedValue: DistanceValue
+}

Tests/stringsTests/FixedBitArrayTests.swift

@@ -1,36 +1,30 @@
-import XCTest
+import Testing
 @testable import strings
 
-final class FixedBitArrayTests: XCTestCase {
+struct FixedBitArrayTests {
 
-  func testDefaultValues() {
+  @Test func testDefaultValues() {
     let size = 10
     let storage = FixedBitArray(count: size)
-    XCTAssertEqual(size, storage.count)
+    #expect(size == storage.count)
 
     for i in 0..<size {
-      XCTAssertFalse(storage[i])
+      #expect(!storage[i])
     }
   }
 
-  func testModifyValues() {
-    _modifyValuesTest(size: 10)
-    _modifyValuesTest(size: 64)
-    _modifyValuesTest(size: 1024)
-    _modifyValuesTest(size: 1030)
-  }
-
-  func _modifyValuesTest(size: Int) {
+  @Test(arguments: [10, 64, 1024, 1030])
+  func testModifyValues(size: Int) {
     var storage = FixedBitArray(count: size)
     for i in 0..<size where  i % 2 == 0 {
       storage[i] = true
     }
 
     for i in 0..<size {
       if i % 2 == 0 {
-        XCTAssertTrue(storage[i])
+        #expect(storage[i])
       } else {
-        XCTAssertFalse(storage[i])
+        #expect(!storage[i])
       }
     }
 
@@ -39,7 +33,7 @@ final class FixedBitArrayTests: XCTestCase {
     }
 
     for i in 0..<size {
-      XCTAssertFalse(storage[i])
+      #expect(!storage[i])
     }
   }
 }

Tests/stringsTests/HammingTests.swift

@@ -5,19 +5,19 @@
 //  Created by Luciano Almeida on 16/03/21.
 //
 
-import XCTest
+import Testing
 import strings
 
-final class HammingTests: XCTestCase {
+struct HammingTests {
+  static let values: [DistanceExpectation<Int>] = [
+    DistanceExpectation(source: "friend", target: "friend", expectedValue: 0),
+    DistanceExpectation(source: "friend", target: "frinnd", expectedValue: 1),
+    DistanceExpectation(source: "test", target: "team", expectedValue: 2),
+    DistanceExpectation(source: "", target: "", expectedValue: 0)
+  ]
 
-  func testHammingDistances() {
-    XCTAssertEqual("friend".hammingDistance(to: "friend"), 0)
-    XCTAssertEqual("friend".hammingDistance(to: "frinnd"), 1)
-    XCTAssertEqual("test".hammingDistance(to: "team"), 2)
-    XCTAssertEqual("".hammingDistance(to: ""), 0)
+  @Test(arguments: values)
+  func testHammingDistances(expectation: DistanceExpectation<Int>) {
+    #expect(expectation.source.hammingDistance(to: expectation.target) == expectation.expectedValue)
   }
-
-  static var allTests = [
-    ("testHammingDistances", testHammingDistances)
-  ]
 }

Tests/stringsTests/JaroTests.swift

@@ -5,41 +5,52 @@
 //  Created by Luciano Almeida on 12/02/21.
 //
 
-import XCTest
+import Testing
 import strings
+import Numerics
 
-final class JaroTests: XCTestCase {
+struct JaroTests {
+  static let jaroValues: [DistanceExpectation<Double>] = [
+    DistanceExpectation(source: "friend", target: "fresh", expectedValue: 0.70),
+    DistanceExpectation(source: "friend", target: "friend", expectedValue: 1),
+    DistanceExpectation(source: "friend", target: "fried", expectedValue: 0.9444),
+    DistanceExpectation(source: "rick", target: "rcik", expectedValue: 0.9166),
+    DistanceExpectation(source: "rick", target: "irkc", expectedValue: 0.8333),
+    DistanceExpectation(source: "", target: "team", expectedValue: 0),
+    DistanceExpectation(source: "team", target: "", expectedValue: 0),
+    DistanceExpectation(source: "adlsajdlsa", target: "asv", expectedValue: 0.6222),
+    DistanceExpectation(source: "DwAyNE", target: "DuANE", expectedValue: 0.822222)
+  ]
 
-  func testJaroDistances() {
-    XCTAssertEqual(0.70, "friend".jaroDistance(to: "fresh"), accuracy: 0.0001)
-    XCTAssertEqual(1, "friend".jaroDistance(to: "friend"), accuracy: 0.0001)
-    XCTAssertEqual(0.9444, "friend".jaroDistance(to: "fried"), accuracy: 0.0001)
-    XCTAssertEqual(0.9166, "rick".jaroDistance(to: "rcik"), accuracy: 0.0001)
-    XCTAssertEqual(0.8333, "rick".jaroDistance(to: "irkc"), accuracy: 0.0001)
-    XCTAssertEqual(0, "".jaroDistance(to: "team"), accuracy: 0.0001)
-    XCTAssertEqual(0, "team".jaroDistance(to: ""), accuracy: 0.0001)
-    XCTAssertEqual(0.6222, "adlsajdlsa".jaroDistance(to: "asv"), accuracy: 0.0001)
-    XCTAssertEqual(0.822222, "DwAyNE".jaroDistance(to: "DuANE"), accuracy: 0.0001)
-  }
+  static let jaroWinklerValues: [DistanceExpectation<Double>] = [
+    DistanceExpectation(source: "friend", target: "fresh", expectedValue: 0.760),
+    DistanceExpectation(source: "friend", target: "friend", expectedValue: 1),
+    DistanceExpectation(source: "friend", target: "fried", expectedValue: 0.9666),
+    DistanceExpectation(source: "rick", target: "rcik", expectedValue: 0.9249),
+    DistanceExpectation(source: "rick", target: "irkc", expectedValue: 0.8333),
+    DistanceExpectation(source: "", target: "team", expectedValue: 0),
+    DistanceExpectation(source: "team", target: "", expectedValue: 0),
+    DistanceExpectation(source: "adlsajdlsa", target: "asv", expectedValue: 0.6222),
+    DistanceExpectation(source: "DwAyNE", target: "DuANE", expectedValue: 0.840),
+    DistanceExpectation(source: "TRATE", target: "TRACE", expectedValue: 0.906667)
 
-  func testJaroWinklerDistances() {
-    XCTAssertEqual(0.760, "friend".jaroWinklerDistance(to: "fresh"), accuracy: 0.0001)
-    XCTAssertEqual(1, "friend".jaroWinklerDistance(to: "friend"), accuracy: 0.0001)
-    XCTAssertEqual(0.9666, "friend".jaroWinklerDistance(to: "fried"), accuracy: 0.0001)
-    XCTAssertEqual(0.9249, "rick".jaroWinklerDistance(to: "rcik"), accuracy: 0.0001)
-    XCTAssertEqual(0.8333, "rick".jaroWinklerDistance(to: "irkc"), accuracy: 0.0001)
-    XCTAssertEqual(0, "".jaroWinklerDistance(to: "team"), accuracy: 0.0001)
-    XCTAssertEqual(0, "team".jaroWinklerDistance(to: ""), accuracy: 0.0001)
-    XCTAssertEqual(0.6222, "adlsajdlsa".jaroWinklerDistance(to: "asv"), accuracy: 0.0001)
-    XCTAssertEqual(0.840, "DwAyNE".jaroWinklerDistance(to: "DuANE"), accuracy: 0.0001)
-    XCTAssertEqual(0.906667, "TRATE".jaroWinklerDistance(to: "TRACE"), accuracy: 0.0001)
+  ]
 
-    // Scaling
-    XCTAssertEqual(0.9466, "TRATE".jaroWinklerDistance(to: "TRACE", scaling: 0.2), accuracy: 0.0001)
+  @Test(arguments: jaroValues)
+  func testJaroDistances(expectation: DistanceExpectation<Double>) {
+    #expect(expectation.source.jaroDistance(to: expectation.target)
+      .isApproximatelyEqual(to: expectation.expectedValue, absoluteTolerance: 0.0001))
   }
 
-  static var allTests = [
-    ("testJaroDistances", testJaroDistances),
-    ("testJaroWinklerDistances", testJaroWinklerDistances)
-  ]
+  @Test(arguments: jaroWinklerValues)
+  func testJaroWinklerDistances(expectation: DistanceExpectation<Double>) {
+    #expect(expectation.source.jaroWinklerDistance(to: expectation.target)
+      .isApproximatelyEqual(to: expectation.expectedValue, absoluteTolerance: 0.0001))
+  }
+
+  @Test
+  func testJaroWinlerDistanceWithScaling() {
+    #expect("TRATE".jaroWinklerDistance(to: "TRACE", scaling: 0.2)
+      .isApproximatelyEqual(to: 0.9466, absoluteTolerance: 0.0001))
+  }
 }

Tests/stringsTests/LevenshteinTests.swift

@@ -5,26 +5,26 @@
 //
 //  Created by Luciano Almeida on 15/12/20.
 //
-import XCTest
+import Testing
 import strings
 
-final class LevenshteinTests: XCTestCase {
+struct LevenshteinTests {
+  static let values: [DistanceExpectation<Int>] = [
+    DistanceExpectation(source: "friend", target: "", expectedValue: 6),
+    DistanceExpectation(source: "friend", target: "fresh", expectedValue: 3),
+    DistanceExpectation(source: "friend", target: "friend", expectedValue: 0),
+    DistanceExpectation(source: "friend", target: "fried", expectedValue: 1),
+    DistanceExpectation(source: "rick", target: "rcik", expectedValue: 2),
+    DistanceExpectation(source: "rick", target: "irkc", expectedValue: 3),
+    DistanceExpectation(source: "irkc", target: "rcik", expectedValue: 4),
+    DistanceExpectation(source: "test", target: "team", expectedValue: 2),
+    DistanceExpectation(source: "", target: "team", expectedValue: 4),
+    DistanceExpectation(source: "test", target: "", expectedValue: 4),
+    DistanceExpectation(source: "adlsajdlsa", target: "asv", expectedValue: 8)
+  ]
 
-  func testLevenshteinDistances() {
-    XCTAssertEqual("friend".levenshteinDistance(to: ""), 6)
-    XCTAssertEqual("friend".levenshteinDistance(to: "fresh"), 3)
-    XCTAssertEqual("friend".levenshteinDistance(to: "friend"), 0)
-    XCTAssertEqual("friend".levenshteinDistance(to: "fried"), 1)
-    XCTAssertEqual("rick".levenshteinDistance(to: "rcik"), 2)
-    XCTAssertEqual("rick".levenshteinDistance(to: "irkc"), 3)
-    XCTAssertEqual("irkc".levenshteinDistance(to: "rcik"), 4)
-    XCTAssertEqual("test".levenshteinDistance(to: "team"), 2)
-    XCTAssertEqual("".levenshteinDistance(to: "team"), 4)
-    XCTAssertEqual("test".levenshteinDistance(to: ""), 4)
-    XCTAssertEqual("adlsajdlsa".levenshteinDistance(to: "asv"), 8)
+  @Test(arguments: values)
+  func testLevenshteinDistances(expectation: DistanceExpectation<Int>) {
+    #expect(expectation.source.levenshteinDistance(to: expectation.target) == expectation.expectedValue)
   }
-
-  static var allTests = [
-    ("testLevenshteinDistances", testLevenshteinDistances)
-  ]
 }