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Merged
mustiikhalil merged 2 commits into from
May 8, 2026
Merged

[Swift] Migrate to use Swift Testing #9076

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3589206
Migrating from Xctests to swift testing
mustiikhalil Feb 14, 2026
2ec9134
Updates flag to make sure that Wasm testing works
mustiikhalil May 6, 2026
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2 changes: 1 addition & 1 deletion .github/workflows/build.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -534,7 +534,7 @@ jobs:
run: |
swift sdk list
swift build --build-tests --swift-sdk swift-6.2.1-RELEASE_wasm
wasmtime --dir . .build/wasm32-unknown-wasip1/debug/FlatBuffers.Test.Swift.WasmPackageTests.xctest
wasmtime --dir . .build/wasm32-unknown-wasip1/debug/FlatBuffers.Test.Swift.WasmPackageTests.xctest --testing-library swift-testing

build-ts:
name: Build TS
Expand Down
44 changes: 22 additions & 22 deletions tests/swift/Tests/Flatbuffers/ByteBufferTests.swift
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Expand Up @@ -14,51 +14,58 @@
* limitations under the License.
*/

import XCTest
import Foundation
import Testing

@testable import FlatBuffers

final class ByteBufferTests: XCTestCase {
struct ByteBufferTests {

@Test
func testCopyingMemory() {
let count = 100
let ptr = UnsafeMutableRawPointer.allocate(byteCount: count, alignment: 1)
let byteBuffer = ByteBuffer(copyingMemoryBound: ptr, capacity: count)
byteBuffer.withUnsafeBytes { memory in
XCTAssertNotEqual(memory.baseAddress, ptr)
#expect(memory.baseAddress! != ptr)
}
}

@Test
func testSamePointer() {
let count = 100
let ptr = UnsafeMutableRawPointer.allocate(byteCount: count, alignment: 1)
let byteBuffer = ByteBuffer(assumingMemoryBound: ptr, capacity: count)
byteBuffer.withUnsafeBytes { memory in
XCTAssertEqual(memory.baseAddress!, ptr)
#expect(memory.baseAddress! == ptr)
}
}

@Test
func testSameDataPtr() {
let count = 100
let ptr = Data(repeating: 0, count: count)
let byteBuffer = ByteBuffer(data: ptr)
byteBuffer.withUnsafeBytes { memory in
ptr.withUnsafeBytes { ptr in
XCTAssertEqual(memory.baseAddress!, ptr.baseAddress!)
#expect(memory.baseAddress! == ptr.baseAddress!)
}
}
}

@Test
func testSameArrayPtr() {
let count = 100
let ptr: [UInt8] = Array(repeating: 0, count: count)
let byteBuffer = ByteBuffer(bytes: ptr)
ptr.withUnsafeBytes { ptr in
byteBuffer.withUnsafeBytes { memory in
XCTAssertEqual(memory.baseAddress, ptr.baseAddress)
#expect(memory.baseAddress == ptr.baseAddress)
}
}
}

@Test
func testReadingDoubleBuffer() {
let count = 8
let array: [Double] = Array(repeating: 8.8, count: count)
Expand All @@ -69,15 +76,16 @@ final class ByteBufferTests: XCTestCase {
}
let byteBuffer = ByteBuffer(bytes: bytes)
byteBuffer.withUnsafePointerToSlice(index: 0, count: count) { ptr in
XCTAssertEqual(ptr.count, count)
#expect(ptr.count == count)
bytes.withUnsafeBufferPointer {
XCTAssertEqual(
UnsafeRawPointer($0.baseAddress),
UnsafeRawPointer(ptr.baseAddress))
#expect(
UnsafeRawPointer($0.baseAddress) ==
UnsafeRawPointer(ptr.baseAddress))
}
}
}

@Test
func testReadingNativeStructs() {
let array = [
MyGame_Example_Vec3(
Expand Down Expand Up @@ -111,11 +119,11 @@ final class ByteBufferTests: XCTestCase {
let byteBuffer = ByteBuffer(bytes: bytes)
byteBuffer
.withUnsafePointerToSlice(index: 0, count: count) { bufferPointer in
XCTAssertEqual(bufferPointer.count, count)
#expect(bufferPointer.count == count)
bytes.withUnsafeBufferPointer { ptr in
XCTAssertEqual(
UnsafeRawPointer(ptr.baseAddress),
UnsafeRawPointer(bufferPointer.baseAddress))
#expect(
UnsafeRawPointer(ptr.baseAddress) ==
UnsafeRawPointer(bufferPointer.baseAddress))
}
}
}
Expand All @@ -126,11 +134,3 @@ private struct TestNativeStructs: NativeStruct {
let y: Double
let z: Int
}

extension MyGame_Example_Color: CaseIterable {
public static let allCases: [MyGame_Example_Color] = [
.red,
.blue,
.green,
]
}
148 changes: 80 additions & 68 deletions tests/swift/Tests/Flatbuffers/FlatBuffersArraysTests.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -16,19 +16,22 @@

#if compiler(>=6.2)

import XCTest
import Testing

@testable import FlatBuffers

@available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
final class FlatBuffersArraysTests: XCTestCase {
struct FlatBuffersArraysTests {

@available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
@Test
func testStructSizes() {
XCTAssertEqual(MemoryLayout<MyGame_Example_NestedStruct>.size, 32)
XCTAssertEqual(MemoryLayout<MyGame_Example_ArrayStruct>.size, 160)
XCTAssertEqual(MemoryLayout<MyGame_Example_LargeArrayStruct>.size, 2496)
#expect(MemoryLayout<MyGame_Example_NestedStruct>.size == 32)
#expect(MemoryLayout<MyGame_Example_ArrayStruct>.size == 160)
#expect((MemoryLayout<MyGame_Example_LargeArrayStruct>.size == 2496))
}

@available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
@Test
func testGoldenData() {
// swiftformat:disable all
let data: [UInt8] = [
Expand All @@ -45,9 +48,11 @@ final class FlatBuffersArraysTests: XCTestCase {
]
// swiftformat:enable all

XCTAssertEqual(data, createArrayTable())
#expect(data == createArrayTable())
}

@available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
@Test
func testData() throws {
var buf = ByteBuffer(bytes: createArrayTable())
let table: MyGame_Example_ArrayTable = try getCheckedRoot(
Expand All @@ -58,6 +63,8 @@ final class FlatBuffersArraysTests: XCTestCase {
verifyNativeStruct(a: table.a)
}

@available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
@Test
func testObjectAPI() throws {
var buf = ByteBuffer(bytes: createArrayTable())
let table: MyGame_Example_ArrayTable = try getCheckedRoot(
Expand All @@ -66,105 +73,110 @@ final class FlatBuffersArraysTests: XCTestCase {
verifyNativeStruct(a: table.unpack().a)
}

@available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
@Test
func testDefaults() {
XCTAssertEqual(
MyGame_Example_NestedStruct(),
MyGame_Example_NestedStruct(
a: [0, 0],
b: .a,
c: [0, 0],
d: [0, 0]))
#expect(
MyGame_Example_NestedStruct() ==
MyGame_Example_NestedStruct(
a: [0, 0],
b: .a,
c: [0, 0],
d: [0, 0]))
}

@available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
func verifyNativeStruct(a: MyGame_Example_ArrayStruct?) {
let a = a!
XCTAssertEqual(a.a, 12.34)
XCTAssertEqual(a.b.count, 15)
#expect(a.a == 12.34)
#expect(a.b.count == 15)
var sum: Int32 = 0
for i in a.b.startIndex..<a.b.endIndex {
sum += a.b[i]
}
XCTAssertEqual(sum, 120)
XCTAssertEqual(a.c, -127)
XCTAssertEqual(a.d.count, 2)
#expect(sum == 120)
#expect(a.c == -127)
#expect(a.d.count == 2)
let nestedStruct1 = a.d[0]
XCTAssertEqual(nestedStruct1.a.toArray(), [-1, 2])
XCTAssertEqual(nestedStruct1.b, .a)
XCTAssertEqual(nestedStruct1.c.toArray(), [.c, .b])
XCTAssertEqual(
nestedStruct1.d.toArray(),
[0x1122334455667788, -0x1122334455667788])
#expect(nestedStruct1.a.toArray() == [-1, 2])
#expect(nestedStruct1.b == .a)
#expect(nestedStruct1.c.toArray() == [.c, .b])
#expect(
nestedStruct1.d.toArray() ==
[0x1122334455667788, -0x1122334455667788])

let nestedStruct2 = a.d[1]
XCTAssertEqual(nestedStruct2.a.toArray(), [3, -4])
XCTAssertEqual(nestedStruct2.b, .b)
XCTAssertEqual(nestedStruct2.c.toArray(), [.b, .a])
XCTAssertEqual(
nestedStruct2.d.toArray(),
[-0x1122334455667788, 0x1122334455667788])

XCTAssertEqual(a.e, 1)
XCTAssertEqual(a.f.count, 2)
#expect(nestedStruct2.a.toArray() == [3, -4])
#expect(nestedStruct2.b == .b)
#expect(nestedStruct2.c.toArray() == [.b, .a])
#expect(
nestedStruct2.d.toArray() ==
[-0x1122334455667788, 0x1122334455667788])

#expect(a.e == 1)
#expect(a.f.count == 2)
}

@available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
func verifyMutations(in table: MyGame_Example_ArrayTable) {
let a = table.mutableA!
XCTAssertEqual(a.a, 12.34)
XCTAssertEqual(a.b.count, 15)
#expect(a.a == 12.34)
#expect(a.b.count == 15)
var sum: Int32 = 0
for i in a.b.startIndex..<a.b.endIndex {
sum += a.b[i]
}
XCTAssertEqual(sum, 120)
XCTAssertEqual(a.c, -127)
XCTAssertEqual(a.d.count, 2)
#expect(sum == 120)
#expect(a.c == -127)
#expect(a.d.count == 2)
let nestedStruct1 = a.d[0]

XCTAssertEqual(nestedStruct1.a.reduce(0) { $0 + $1 }, 1)
XCTAssertEqual(nestedStruct1.b, .a)
XCTAssertEqual(nestedStruct1.c[0], .c)
XCTAssertEqual(nestedStruct1.c[1], .b)
#expect(nestedStruct1.a.reduce(0) { $0 + $1 } == 1)
#expect(nestedStruct1.b == .a)
#expect(nestedStruct1.c[0] == .c)
#expect(nestedStruct1.c[1] == .b)

let nestedStruct2 = a.d[1]
XCTAssertEqual(nestedStruct2.a.reduce(0) { $0 + $1 }, -1)
XCTAssertEqual(nestedStruct2.b, .b)
XCTAssertEqual(nestedStruct2.c[0], .b)
XCTAssertEqual(nestedStruct2.c[1], .a)
XCTAssertEqual(nestedStruct2.d[0], -0x1122334455667788)
XCTAssertEqual(nestedStruct2.d[1], 0x1122334455667788)
#expect(nestedStruct2.a.reduce(0) { $0 + $1 } == -1)
#expect(nestedStruct2.b == .b)
#expect(nestedStruct2.c[0] == .b)
#expect(nestedStruct2.c[1] == .a)
#expect(nestedStruct2.d[0] == -0x1122334455667788)
#expect(nestedStruct2.d[1] == 0x1122334455667788)

XCTAssertTrue(a.mutate(b: 1000, at: 0))
XCTAssertTrue(a.mutate(b: 2000, at: 1))
#expect(a.mutate(b: 1000, at: 0) == true)
#expect(a.mutate(b: 2000, at: 1) == true)

XCTAssertTrue(nestedStruct2.mutate(c: .a, at: 0))
XCTAssertTrue(nestedStruct2.mutate(c: .b, at: 1))
#expect(nestedStruct2.mutate(c: .a, at: 0) == true)
#expect(nestedStruct2.mutate(c: .b, at: 1) == true)

XCTAssertEqual(nestedStruct2.c[0], .a)
XCTAssertEqual(nestedStruct2.c[1], .b)
#expect(nestedStruct2.c[0] == .a)
#expect(nestedStruct2.c[1] == .b)

XCTAssertTrue(nestedStruct2.mutate(d: 0, at: 0))
XCTAssertTrue(nestedStruct2.mutate(d: 0, at: 1))
#expect(nestedStruct2.mutate(d: 0, at: 0) == true)
#expect(nestedStruct2.mutate(d: 0, at: 1) == true)

XCTAssertEqual(nestedStruct2.d.reduce(0) { $0 + $1 }, 0)
#expect(nestedStruct2.d.reduce(0) { $0 + $1 } == 0)

let nativeStruct = table.a?.d[1]

XCTAssertEqual(nativeStruct?.c[0], .a)
XCTAssertEqual(nativeStruct?.c[1], .b)
#expect(nativeStruct?.c[0] == .a)
#expect(nativeStruct?.c[1] == .b)

XCTAssertEqual(nativeStruct?.d[0], 0)
XCTAssertEqual(nativeStruct?.d[1], 0)
#expect(nativeStruct?.d[0] == 0)
#expect(nativeStruct?.d[1] == 0)

XCTAssertTrue(a.mutate(b: 1, at: 0))
XCTAssertTrue(a.mutate(b: 2, at: 1))
#expect(a.mutate(b: 1, at: 0) == true)
#expect(a.mutate(b: 2, at: 1) == true)

XCTAssertTrue(nestedStruct2.mutate(c: .b, at: 0))
XCTAssertTrue(nestedStruct2.mutate(c: .a, at: 1))
#expect(nestedStruct2.mutate(c: .b, at: 0) == true)
#expect(nestedStruct2.mutate(c: .a, at: 1) == true)

XCTAssertTrue(nestedStruct2.mutate(d: -0x1122334455667788, at: 0))
XCTAssertTrue(nestedStruct2.mutate(d: 0x1122334455667788, at: 1))
#expect(nestedStruct2.mutate(d: -0x1122334455667788, at: 0) == true)
#expect(nestedStruct2.mutate(d: 0x1122334455667788, at: 1) == true)
}

@available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
private func createArrayTable() -> [UInt8] {
var builder = FlatBufferBuilder(initialSize: 1024)

Expand Down
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