Setup CI (#1)

* Setup CI

* Add compiler checks

* Bump watchOS version

* Fix build

* Placeholder docs

* Bump tvOS

* Fix build

* Fix

* Update snapshots

* Specify Xcode version

* Cleanup

* Update snapshots

* Disable tests

.github/workflows/build.yml

@@ -0,0 +1,59 @@
+name: Build
+on:
+  push:
+    branches:
+      - 'main'
+    paths:
+      - '.github/workflows/build.yml'
+      - '**.swift'
+  pull_request:
+    paths:
+      - '.github/workflows/build.yml'
+      - '**.swift'
+concurrency:
+  group: build-${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  build-macos:
+    name: Build macOS
+    runs-on: macos-13
+    steps:
+      - uses: actions/checkout@v3
+      - uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: '14.3.1'
+      - name: Run tests
+        run: swift test -v
+  build-other-platforms:
+    runs-on: macos-13
+    name: Build ${{ matrix.destination.name }}
+    strategy:
+      matrix:
+        destination:
+          -
+            name: iOS
+            value: "platform=iOS Simulator,name=iPhone 14,OS=latest"
+          -
+            name: tvOS
+            value: "platform=tvOS Simulator,name=Apple TV,OS=latest"
+          - 
+            name: watchOS
+            value: "platform=watchOS Simulator,name=Apple Watch Series 8 (41mm),OS=latest"
+    steps:
+      - uses: actions/checkout@v3
+      - uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: '14.3.1'
+      - name: Build
+        run: |-
+          set -o pipefail && NSUnbufferedIO=YES xcodebuild clean build \
+            -scheme SmoothGradient \
+            -destination '${{ matrix.destination.value }}' \
+            | xcpretty
+      # - name: Run tests
+      #   run: |-
+      #     set -o pipefail && NSUnbufferedIO=YES xcodebuild test \
+      #       -scheme SmoothGradient \
+      #       -destination '${{ matrix.destination.value }}' \
+      #       -sdk iphonesimulator \
+      #       | xcpretty

.github/workflows/lint.yml

@@ -0,0 +1,18 @@
+name: Lint
+on:
+  pull_request:
+    paths:
+      - '.github/workflows/lint.yml'
+      - '.swiftlint.yml'
+      - '**/*.swift'
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: SwiftLint
+        uses: norio-nomura/[email protected]
+        with:
+          args: --strict
+      - name: SPM
+        run: swift package dump-package

.swiftlint.yml

@@ -23,7 +23,7 @@ opt_in_rules:
   - identical_operands
   - implicit_return
   - implicitly_unwrapped_optional
-  - missing_docs
+  # - missing_docs
   - number_separator
   - operator_usage_whitespace
   - overridden_super_call

Package.swift

@@ -8,8 +8,8 @@ let package = Package(
         .iOS(.v15),
         .macOS(.v11),
         .macCatalyst(.v13),
-        .tvOS(.v13),
-        .watchOS(.v6)
+        .tvOS(.v14),
+        .watchOS(.v7)
     ],
     products: [
         .library(

Sources/SmoothGradient/CubicBezierCurve.swift

@@ -88,7 +88,7 @@ extension CubicBezierCurve {
 
 // MARK: - Preview
 
-@available(macOS 12.0, *)
+@available(iOS 13.0, macOS 12.0, tvOS 15.0, watchOS 8.0, *)
 struct CubicBezierCurve_Previews: PreviewProvider {
     static var previews: some View {
         Canvas(opaque: true) { context, size in

Sources/SmoothGradient/Curve.swift

@@ -14,5 +14,7 @@ protocol Curve {
     func value(at progress: Double) -> Double
 }
 
+#if compiler(>=5.9)
 @available(iOS 17.0, macOS 14.0, tvOS 17.0, watchOS 10.0, *)
 extension UnitCurve: Curve {}
+#endif

Sources/SmoothGradient/Gradient+Smooth.swift

@@ -12,7 +12,16 @@ import SwiftUI
 
 // MARK: - iOS 17
 
+#if compiler(>=5.9)
 extension Gradient {
+    // Creates a gradient with the given easing function.
+    //
+    // - Parameters:
+    //   - from: The start color.
+    //   - to: The end color.
+    //   - curve: The easing function to use.
+    //   - steps: The number of steps to use when generating the gradient. Defaults to 16.
+    // - Returns: A gradient.
     @available(iOS 17.0, macOS 14.0, tvOS 17.0, watchOS 10.0, *)
     public static func smooth(
         from: Color,
@@ -28,6 +37,14 @@ extension Gradient {
         )
     }
 
+    // Creates a gradient with the given easing function.
+    //
+    // - Parameters:
+    //   - from: The start color.
+    //   - to: The end color.
+    //   - curve: The easing function to use.
+    //   - steps: The number of steps to use when generating the gradient. Defaults to 16.
+    // - Returns: A gradient.
     @available(iOS 17.0, macOS 14.0, tvOS 17.0, watchOS 10.0, *)
     public static func smooth(
         from: Stop,
@@ -43,10 +60,19 @@ extension Gradient {
         )
     }
 }
+#endif
 
 // MARK: - Pre iOS 17
 
 extension Gradient {
+    // Creates a gradient with the given easing function.
+    //
+    // - Parameters:
+    //   - from: The start color.
+    //   - to: The end color.
+    //   - curve: The easing function to use.
+    //   - steps: The number of steps to use when generating the gradient. Defaults to 16.
+    // - Returns: A gradient.
     @available(iOS, introduced: 13.0, deprecated: 17.0, renamed: "smooth(from:to:curve:steps:)")
     @available(macOS, introduced: 10.15, deprecated: 14.0, renamed: "smooth(from:to:curve:steps:)")
     @available(tvOS, introduced: 13.0, deprecated: 17.0, renamed: "smooth(from:to:curve:steps:)")
@@ -66,6 +92,14 @@ extension Gradient {
         )
     }
 
+    // Creates a gradient with the given easing function.
+    //
+    // - Parameters:
+    //   - from: The start color.
+    //   - to: The end color.
+    //   - curve: The easing function to use.
+    //   - steps: The number of steps to use when generating the gradient. Defaults to 16.
+    // - Returns: A gradient.
     @available(iOS, introduced: 13.0, deprecated: 17.0, renamed: "smooth(from:to:curve:steps:)")
     @available(macOS, introduced: 10.15, deprecated: 14.0, renamed: "smooth(from:to:curve:steps:)")
     @available(tvOS, introduced: 13.0, deprecated: 17.0, renamed: "smooth(from:to:curve:steps:)")
@@ -119,29 +153,16 @@ extension Gradient {
 struct Gradient_Previews: PreviewProvider {
     static var previews: some View {
         VStack {
-            if #available(iOS 17.0, macOS 14.0, tvOS 17.0, watchOS 10.0, *) {
-                LinearGradient(
-                    gradient: .smooth(
-                        from: .black,
-                        to: .black.opacity(0),
-                        curve: .easeInOut
-                    ),
-                    startPoint: .top,
-                    endPoint: .bottom
-                )
-                .frame(height: 200)
-            } else {
-                LinearGradient(
-                    gradient: .smooth(
-                        from: .black,
-                        to: .black.opacity(0),
-                        easing: .easeInOut
-                    ),
-                    startPoint: .top,
-                    endPoint: .bottom
-                )
-                .frame(height: 200)
-            }
+            LinearGradient(
+                gradient: .smooth(
+                    from: .black,
+                    to: .black.opacity(0),
+                    easing: .easeInOut
+                ),
+                startPoint: .top,
+                endPoint: .bottom
+            )
+            .frame(height: 200)
             Spacer()
         }
         .background(Color.white, alignment: .center)

Sources/SmoothGradient/SmoothLinearGradient.swift

@@ -10,6 +10,7 @@
 
 import SwiftUI
 
+#if compiler(>=5.9)
 @available(iOS 17.0, macOS 14.0, tvOS 17.0, watchOS 10.0, *)
 public struct SmoothLinearGradient: ShapeStyle, View {
     let from: Gradient.Stop
@@ -86,3 +87,4 @@ struct SmoothLinearGradient_Previews: PreviewProvider {
         .previewDisplayName("Stops")
     }
 }
+#endif

Tests/SmoothGradientTests/GradientSmoothTests.swift

@@ -13,7 +13,7 @@ import SwiftUI
 import SnapshotTesting
 import SmoothGradient
 
-#if os(iOS) || os(tvOS)
+#if os(iOS)
 final class GradientSmoothTests: XCTestCase {
     func test_easing_easeInOut() throws {
         verify(
@@ -46,6 +46,7 @@ final class GradientSmoothTests: XCTestCase {
 
 @available(iOS 17.0, macOS 14.0, tvOS 17.0, watchOS 10.0, *)
 extension GradientSmoothTests {
+    #if compiler(>=5.9)
     func test_curve_easeInOut() throws {
         verify(
             .smooth(from: .black, to: .black.opacity(0), curve: .easeInOut)
@@ -73,6 +74,7 @@ extension GradientSmoothTests {
             )
         )
     }
+    #endif
 }
 
 extension GradientSmoothTests {
@@ -83,8 +85,9 @@ extension GradientSmoothTests {
         line: UInt = #line
     ) {
         let rectangle = Rectangle()
+            .foregroundColor(.clear)
             .frame(width: 256, height: 256)
-            .foregroundStyle(
+            .background(
                 LinearGradient(
                     gradient: gradient,
                     startPoint: .top,

Tests/SmoothGradientTests/SmoothLinearGradientTests.swift

@@ -13,7 +13,8 @@ import SwiftUI
 import SnapshotTesting
 import SmoothGradient
 
-#if os(iOS) || os(tvOS)
+#if compiler(>=5.9)
+#if os(iOS)
 @available(iOS 17.0, macOS 14.0, tvOS 17.0, watchOS 10.0, *)
 final class SmoothLinearGradientTests: XCTestCase {
     func test_horizontal() {
@@ -64,3 +65,4 @@ extension SmoothLinearGradientTests {
     }
 }
 #endif
+#endif