diff --git a/Example/Example.xcodeproj/project.pbxproj b/Example/Example.xcodeproj/project.pbxproj
index 492df85..c836f11 100644
--- a/Example/Example.xcodeproj/project.pbxproj
+++ b/Example/Example.xcodeproj/project.pbxproj
@@ -24,6 +24,7 @@
 		DCA9838727D6A44700D6EA30 /* NavigationBarExampleViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = DCA9838627D6A44700D6EA30 /* NavigationBarExampleViewController.swift */; };
 		DCA9838927D6A55A00D6EA30 /* NavigationBarExample.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = DCA9838827D6A55A00D6EA30 /* NavigationBarExample.storyboard */; };
 		DCA9838B27D6A74800D6EA30 /* SwiftUIExampleView.swift in Sources */ = {isa = PBXBuildFile; fileRef = DCA9838A27D6A74800D6EA30 /* SwiftUIExampleView.swift */; };
+		F560001227EA2032001913A0 /* GradientLoadingBarView+ViewModelTestCase.swift in Sources */ = {isa = PBXBuildFile; fileRef = F560001127EA2032001913A0 /* GradientLoadingBarView+ViewModelTestCase.swift */; };
 		F57C83C927DA11580025AA11 /* GradientLoadingBarViewTestCase.swift in Sources */ = {isa = PBXBuildFile; fileRef = F57C83C827DA11580025AA11 /* GradientLoadingBarViewTestCase.swift */; };
 		F5F5B69C27D94B1800D998B5 /* GradientActivityIndicatorView+AnimateIsHiddenTestCase.swift in Sources */ = {isa = PBXBuildFile; fileRef = F5F5B69727D94B1800D998B5 /* GradientActivityIndicatorView+AnimateIsHiddenTestCase.swift */; };
 		F5F5B69D27D94B1800D998B5 /* GradientLoadingBarViewModelTestCase.swift in Sources */ = {isa = PBXBuildFile; fileRef = F5F5B69927D94B1800D998B5 /* GradientLoadingBarViewModelTestCase.swift */; };
@@ -77,6 +78,7 @@
 		DCA9838627D6A44700D6EA30 /* NavigationBarExampleViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NavigationBarExampleViewController.swift; sourceTree = "<group>"; };
 		DCA9838827D6A55A00D6EA30 /* NavigationBarExample.storyboard */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; path = NavigationBarExample.storyboard; sourceTree = "<group>"; };
 		DCA9838A27D6A74800D6EA30 /* SwiftUIExampleView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SwiftUIExampleView.swift; sourceTree = "<group>"; };
+		F560001127EA2032001913A0 /* GradientLoadingBarView+ViewModelTestCase.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "GradientLoadingBarView+ViewModelTestCase.swift"; sourceTree = "<group>"; };
 		F57C83C827DA11580025AA11 /* GradientLoadingBarViewTestCase.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GradientLoadingBarViewTestCase.swift; sourceTree = "<group>"; };
 		F5F5B69727D94B1800D998B5 /* GradientActivityIndicatorView+AnimateIsHiddenTestCase.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "GradientActivityIndicatorView+AnimateIsHiddenTestCase.swift"; sourceTree = "<group>"; };
 		F5F5B69927D94B1800D998B5 /* GradientLoadingBarViewModelTestCase.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = GradientLoadingBarViewModelTestCase.swift; sourceTree = "<group>"; };
@@ -268,8 +270,9 @@
 		F5F5B69827D94B1800D998B5 /* ViewModel */ = {
 			isa = PBXGroup;
 			children = (
-				F5F5B69927D94B1800D998B5 /* GradientLoadingBarViewModelTestCase.swift */,
 				F5F5B69A27D94B1800D998B5 /* GradientActivityIndicatorViewModelTestCase.swift */,
+				F560001127EA2032001913A0 /* GradientLoadingBarView+ViewModelTestCase.swift */,
+				F5F5B69927D94B1800D998B5 /* GradientLoadingBarViewModelTestCase.swift */,
 				F5F5B69B27D94B1800D998B5 /* NotchGradientLoadingBarViewModelTestCase.swift */,
 			);
 			path = ViewModel;
@@ -607,6 +610,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				F560001227EA2032001913A0 /* GradientLoadingBarView+ViewModelTestCase.swift in Sources */,
 				F5F5B69E27D94B1800D998B5 /* GradientActivityIndicatorViewModelTestCase.swift in Sources */,
 				F5F5B69C27D94B1800D998B5 /* GradientActivityIndicatorView+AnimateIsHiddenTestCase.swift in Sources */,
 				F5F5B69F27D94B1800D998B5 /* NotchGradientLoadingBarViewModelTestCase.swift in Sources */,
diff --git a/Example/ExampleTests/ViewModel/GradientLoadingBarView+ViewModelTestCase.swift b/Example/ExampleTests/ViewModel/GradientLoadingBarView+ViewModelTestCase.swift
new file mode 100644
index 0000000..2140e31
--- /dev/null
+++ b/Example/ExampleTests/ViewModel/GradientLoadingBarView+ViewModelTestCase.swift
@@ -0,0 +1,81 @@
+//
+//  GradientLoadingBarView+ViewModelTestCase.swift
+//  ExampleTests
+//
+//  Created by Felix Mau on 22.03.22.
+//  Copyright © 2022 Felix Mau. All rights reserved.
+//
+
+import XCTest
+import SwiftUI
+
+@testable import GradientLoadingBar
+
+// swiftlint:disable:next type_name
+final class GradientLoadingBarView_ViewModelTestCase: XCTestCase {
+    // MARK: - Test property `gradientColors`
+
+    func test_initialGradientColors_shouldIncludeReversedGradientColors() {
+        // Given
+        let gradientColors: [Color] = [.red, .yellow, .green]
+
+        // When
+        let viewModel = GradientLoadingBarView.ViewModel(gradientColors: gradientColors, progressDuration: 1)
+
+        // Then
+        let expectedGradientColors: [Color] = [.red, .yellow, .green, .yellow, .red, .yellow, .green]
+        XCTAssertEqual(viewModel.gradientColors, expectedGradientColors)
+    }
+
+    // MARK: - Test property `offset`
+
+    func test_initialOffset_shouldBeZero() {
+        // When
+        let viewModel = GradientLoadingBarView.ViewModel(gradientColors: [], progressDuration: 1)
+
+        // Then
+        XCTAssertEqual(viewModel.offset, 0)
+    }
+
+    func test_settingSize_shouldUpdateOffset() {
+        // Given
+        let viewModel = GradientLoadingBarView.ViewModel(gradientColors: [], progressDuration: 1)
+        let size = CGSize(width: .random(in: 1 ... 100_000), height: .random(in: 1 ... 100_000))
+
+        var receivedValues = [CGFloat]()
+        let subscription = viewModel.$offset.sink {
+            receivedValues.append($0)
+        }
+
+        withExtendedLifetime(subscription) {
+            // When
+            viewModel.size = size
+        }
+
+        // Then
+        let expectedValues = [0, -size.width, size.width]
+        XCTAssertEqual(receivedValues, expectedValues)
+    }
+
+    // MARK: - Test property `gradientWidth`
+
+    func test_initialGradientWidth_shouldBeZero() {
+        // When
+        let viewModel = GradientLoadingBarView.ViewModel(gradientColors: [], progressDuration: 1)
+
+        // Then
+        XCTAssertEqual(viewModel.gradientWidth, 0)
+    }
+
+    func test_settingSize_shouldUpdateGradientWidth() {
+        // Given
+        let viewModel = GradientLoadingBarView.ViewModel(gradientColors: [], progressDuration: 1)
+        let size = CGSize(width: .random(in: 1 ... 100_000), height: .random(in: 1 ... 100_000))
+
+        // When
+        viewModel.size = size
+
+        // Then
+        XCTAssertEqual(viewModel.gradientWidth, size.width * 3)
+    }
+}