public async Task GetAssetsFilePathAsync_WithValidMSBuildProjectExtensionsPath_Succeeds()
        {
            // Arrange
            using (var testDirectory = TestDirectory.Create())
            {
                var testMSBuildProjectExtensionsPath = Path.Combine(testDirectory, "obj");
                Directory.CreateDirectory(testMSBuildProjectExtensionsPath);
                var projectAdapter = Mock.Of <IVsProjectAdapter>();
                Mock.Get(projectAdapter)
                .SetupGet(x => x.MSBuildProjectExtensionsPath)
                .Returns(testMSBuildProjectExtensionsPath);

                var testProject = new LegacyPackageReferenceProject(
                    projectAdapter,
                    Guid.NewGuid().ToString(),
                    new TestProjectSystemServices(),
                    _threadingService);

                await _threadingService.JoinableTaskFactory.SwitchToMainThreadAsync();

                // Act
                var assetsPath = await testProject.GetAssetsFilePathAsync();

                // Assert
                Assert.Equal(Path.Combine(testMSBuildProjectExtensionsPath, "project.assets.json"), assetsPath);

                // Verify
                Mock.Get(projectAdapter)
                .VerifyGet(x => x.MSBuildProjectExtensionsPath, Times.AtLeastOnce);
            }
        }
        public async Task GetAssetsFilePathAsync_WithNoMSBuildProjectExtensionsPath_Throws()
        {
            // Arrange
            using (TestDirectory.Create())
            {
                var testProject = new LegacyPackageReferenceProject(
                    Mock.Of <IVsProjectAdapter>(),
                    Guid.NewGuid().ToString(),
                    new TestProjectSystemServices(),
                    _threadingService);

                await _threadingService.JoinableTaskFactory.SwitchToMainThreadAsync();

                // Act & Assert
                await Assert.ThrowsAsync <InvalidDataException>(
                    () => testProject.GetAssetsFilePathAsync());
            }
        }