increase code coverage project variables feature

test/GitLabApiClient.Test/ProjectsClientTest.cs

@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using System.IO;
+using System.Linq;
 using System.Threading.Tasks;
 using FluentAssertions;
 using GitLabApiClient.Internal.Queries;
@@ -20,6 +21,7 @@ public class ProjectsClientTest : IAsyncLifetime
     {
         private List<int> ProjectIdsToClean { get; } = new List<int>();
         private List<int> MilestoneIdsToClean { get; } = new List<int>();
+        private List<string> VariableIdsToClean { get; } = new List<string>();
 
         private readonly ProjectsClient _sut = new ProjectsClient(
             GitLabApiHelper.GetFacade(),
@@ -73,6 +75,37 @@ public async Task ProjectMilestonesRetrieved()
                 m.Description == "description1");
         }
 
+        [Fact]
+        public async Task ProjectVariablesRetrieved()
+        {
+            //arrange
+            var createdVariable = await _sut.CreateVariableAsync(new CreateVariableRequest
+            {
+                ProjectId = GitLabApiHelper.TestProjectId.ToString(),
+                VariableType = "env_var",
+                Key = "SOME_VAR_KEY",
+                Value = "VALUE_VAR",
+                EnvironmentScope = "*",
+                Masked = true,
+                Protected = true
+            });
+            VariableIdsToClean.Add(createdVariable.Key);
+
+            //act
+            var variables = await _sut.GetVariablesAsync(GitLabApiHelper.TestProjectId);
+            var variable = variables.First(v => v.Key == createdVariable.Key);
+
+            //assert
+            variables.Should().NotBeEmpty();
+            variable.Should().Match<Variable>(v =>
+                v.VariableType == createdVariable.VariableType &&
+                v.Key == createdVariable.Key &&
+                v.Value == createdVariable.Value &&
+                v.EnvironmentScope == createdVariable.EnvironmentScope &&
+                v.Masked == createdVariable.Masked &&
+                v.Protected == createdVariable.Protected);
+        }
+
         [Fact]
         public async Task ProjectRetrievedByName()
         {
@@ -138,6 +171,7 @@ public async Task ProjectVariableCreatedUpdateDeleted()
                                                    && v.Masked == request.Masked
                                                    && v.Protected == request.Protected);
 
+            VariableIdsToClean.Add(request.Key);
 
             var updateRequest = new UpdateProjectVariableRequest
             {
@@ -302,6 +336,9 @@ private async Task CleanupProjects()
 
             foreach (int projectId in ProjectIdsToClean)
                 await _sut.DeleteAsync(projectId);
+
+            foreach (string variableId in VariableIdsToClean)
+                await _sut.DeleteVariableAsync(GitLabApiHelper.TestProjectId, variableId);
         }
 
         private static string GetRandomProjectName() => "test-gitlabapiclient" + Path.GetRandomFileName();