Additional tests

Tests/SmoothGradientTests/GradientSmoothTests.swift

@@ -13,6 +13,7 @@ import SwiftUI
 import SnapshotTesting
 import SmoothGradient
 
+#if os(iOS) || os(tvOS)
 final class GradientSmoothTests: XCTestCase {
     func test_easing_easeInOut() throws {
         verify(
@@ -100,3 +101,4 @@ extension GradientSmoothTests {
         )
     }
 }
+#endif

Tests/SmoothGradientTests/SmoothLinearGradientTests.swift

@@ -0,0 +1,66 @@
+//
+//  SmoothLinearGradientTests.swift
+//  SmoothGradientTests
+//
+//  Copyright (c) 2023 Ramon Torres
+//
+//  This file is part of SmoothGradient which is released under the MIT license.
+//  See the LICENSE file in the root directory of this source tree for full details.
+//
+
+import XCTest
+import SwiftUI
+import SnapshotTesting
+import SmoothGradient
+
+#if os(iOS) || os(tvOS)
+@available(iOS 17.0, macOS 14.0, tvOS 17.0, watchOS 10.0, *)
+final class SmoothLinearGradientTests: XCTestCase {
+    func test_horizontal() {
+        verify(
+            SmoothLinearGradient(from: .green, to: .blue, startPoint: .leading, endPoint: .trailing)
+        )
+    }
+
+    func test_vertical() {
+        verify(
+            SmoothLinearGradient(from: .green, to: .blue, startPoint: .top, endPoint: .bottom)
+        )
+    }
+
+    func test_diagonal() {
+        verify(
+            SmoothLinearGradient(from: .green, to: .blue, startPoint: .topLeading, endPoint: .bottomTrailing)
+        )
+    }
+
+    func test_stops() {
+        verify(
+            SmoothLinearGradient(
+                from: .init(color: .green, location: 0.2),
+                to: .init(color: .red, location: 0.4),
+                startPoint: .top,
+                endPoint: .bottom
+            )
+        )
+    }
+}
+
+@available(iOS 17.0, macOS 14.0, tvOS 17.0, watchOS 10.0, *)
+extension SmoothLinearGradientTests {
+    func verify(
+        _ gradient: SmoothLinearGradient,
+        file: StaticString = #file,
+        testName: String = #function,
+        line: UInt = #line
+    ) {
+        assertSnapshot(
+            matching: gradient.frame(width: 256, height: 256),
+            as: .image,
+            file: file,
+            testName: testName,
+            line: line
+        )
+    }
+}
+#endif