diff --git a/.github/workflows/packages.yml b/.github/workflows/packages.yml
index 10bb34007..7e23ef7d4 100644
--- a/.github/workflows/packages.yml
+++ b/.github/workflows/packages.yml
@@ -1,4 +1,5 @@
name: Packages
+
on:
workflow_dispatch:
push:
@@ -12,18 +13,86 @@ on:
- 'rc/*'
- 'develop/*'
- 'codex/*'
+ pull_request:
+ branches:
+ - 'main'
+ - 'bug/*'
+ - 'perf/*'
+ - 'patch/*'
+ - 'feat/*'
+ - 'enh/*'
+ - 'rc/*'
+ - 'develop/*'
+ - 'codex/*'
release:
- types: [ prereleased, published ]
+ types: [prereleased, published]
+
env:
base_version: '3.6.0'
feedz_feed_source: 'https://f.feedz.io/elsa-workflows/elsa-3/nuget/index.json'
nuget_feed_source: 'https://api.nuget.org/v3/index.json'
jobs:
- build:
- name: Build packages
+ test:
+ name: Test with coverage
runs-on: ubuntu-latest
timeout-minutes: 30
+ steps:
+ - name: Checkout
+ uses: actions/checkout@v4
+
+ - name: Set up .NET SDKs
+ uses: actions/setup-dotnet@v4
+ with:
+ dotnet-version: |
+ 8.0.x
+ 9.0.x
+
+ - name: Cache NuGet packages
+ uses: actions/cache@v4
+ with:
+ path: ~/.nuget/packages
+ key: ${{ runner.os }}-nuget-${{ hashFiles('**/Directory.Packages.props', '**/*.csproj') }}
+ restore-keys: |
+ ${{ runner.os }}-nuget-
+
+ - name: Restore solution
+ run: dotnet restore Elsa.sln
+
+ - name: Build solution
+ run: dotnet build Elsa.sln --no-restore --configuration Release
+
+ - name: Prepare coverage directory
+ run: |
+ rm -rf artifacts/coverage
+ mkdir -p artifacts/coverage
+
+ - name: Run tests with coverage
+ run: |
+ set -euo pipefail
+ mapfile -t projects < <(find test -type f -name '*.csproj' | sort)
+ if [ ${#projects[@]} -eq 0 ]; then
+ echo "No test projects were found in the test directory." >&2
+ exit 1
+ fi
+ for project in "${projects[@]}"; do
+ echo "Running tests with coverage for ${project}"
+ dotnet test "$project" --configuration Release --no-build --logger "GitHubActions;report-warnings=false" /p:CollectCoverage=true
+ done
+
+ - name: Upload coverage reports
+ if: always()
+ uses: actions/upload-artifact@v4
+ with:
+ name: coverage-reports
+ path: artifacts/coverage
+
+ build:
+ name: Build packages
+ needs: test
+ runs-on: ubuntu-latest
+ timeout-minutes: 30
+ if: ${{ github.event_name != 'pull_request' }}
steps:
- name: Extract branch name
run: |
@@ -31,28 +100,31 @@ jobs:
BRANCH_NAME=${BRANCH_NAME#refs/heads/} # remove the refs/heads/ prefix
# Extract the last part after the last slash of the branch name, if any, e.g., feature/issue-123 -> issue-123 and use it as the version prefix.
PACKAGE_PREFIX=$(echo $BRANCH_NAME | rev | cut -d/ -f1 | rev | tr '_' '-')
-
+
# If the branch name is main, use the preview version. Otherwise, use the branch name as the version prefix.
if [[ "${BRANCH_NAME}" == "main" || "${BRANCH_NAME}" =~ ^develop/ ]]; then
PACKAGE_PREFIX="preview"
fi
-
+
echo "Ref: ${{ github.ref }}"
echo "Branch name: ${BRANCH_NAME}"
echo "Package prefix: ${PACKAGE_PREFIX}"
echo "BRANCH_NAME=${BRANCH_NAME}" >> $GITHUB_ENV
echo "PACKAGE_PREFIX=${PACKAGE_PREFIX}" >> $GITHUB_ENV
+
- name: Checkout
uses: actions/checkout@v4
+
- name: Verify commit exists in branch
run: |
- if [[ "${{ github.ref }}" == refs/tags/* && "${{ github.event_name }}" == "release" && ("${{ github.event.action }}" == "published" || "${{ github.event.action }}" == "prereleased")]]; then
+ if [[ "${{ github.ref }}" == refs/tags/* && "${{ github.event_name }}" == "release" && ("${{ github.event.action }}" == "published" || "${{ github.event.action }}" == "prereleased") ]]; then
git fetch --no-tags --prune --depth=1 origin +refs/heads/*:refs/remotes/origin/*
git branch --remote --contains | grep origin/develop/3.6.0
else
git fetch --no-tags --prune --depth=1 origin +refs/heads/*:refs/remotes/origin/*
git branch --remote --contains | grep origin/${BRANCH_NAME}
fi
+
- name: Set VERSION variable
run: |
if [[ "${{ github.ref }}" == refs/tags/* && "${{ github.event_name }}" == "release" && ("${{ github.event.action }}" == "published" || "${{ github.event.action }}" == "prereleased") ]]; then
@@ -62,35 +134,21 @@ jobs:
else
echo "VERSION=${{env.base_version}}-preview.${{github.run_number}}" >> $GITHUB_ENV
fi
- # - name: Set up JDK 17
- # uses: actions/setup-java@v2
- # with:
- # java-version: '17'
- # distribution: 'adopt'
+
- uses: actions/setup-dotnet@v4
with:
dotnet-version: 9.x
- # - name: Install SonarScanner for .NET
- # run: dotnet tool install --global dotnet-sonarscanner
- # - name: Install Coverlet for code coverage
- # run: dotnet tool install --global coverlet.console
- # - name: Begin SonarCloud analysis
- # env:
- # SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
- # run: dotnet sonarscanner begin /k:"elsa-workflows_elsa-core" /o:"elsa-workflows" /d:sonar.host.url="https://sonarcloud.io" /d:sonar.token="${{ secrets.SONAR_TOKEN }}" /d:sonar.exclusions=**/obj/**,**/*.dll,build/**,samples/**,src/apps/** /d:"sonar.verbose=true" /d:sonar.cs.opencover.reportsPaths=**/testresults/**/coverage.opencover.xml
+
- name: Compile+Test+Pack
run: ./build.sh Compile+Test+Pack --version ${VERSION} --analyseCode true
- # - name: End SonarCloud analysis
- # env:
- # SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
- # run: dotnet sonarscanner end /d:sonar.token="${{ secrets.SONAR_TOKEN }}"
+
- name: Upload artifact
uses: actions/upload-artifact@v4
with:
name: elsa-nuget-packages
path: packages/*nupkg
if: ${{ github.event_name == 'release' || github.event_name == 'push'}}
-
+
publish_preview_feedz:
name: Publish to feedz.io
needs: build
diff --git a/Directory.Packages.props b/Directory.Packages.props
index 4768c5cc5..232f8c561 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -29,6 +29,7 @@
+
diff --git a/Elsa.sln b/Elsa.sln
index 9fce3e932..f92369873 100644
--- a/Elsa.sln
+++ b/Elsa.sln
@@ -62,8 +62,14 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "docker", "docker", "{986E54
EndProjectSection
EndProject
Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "unit", "unit", "{18453B51-25EB-4317-A4B3-B10518252E92}"
+ ProjectSection(SolutionItems) = preProject
+ test\unit\Directory.Build.props = test\unit\Directory.Build.props
+ EndProjectSection
EndProject
Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "integration", "integration", "{1B8D5897-902E-4632-8698-E89CAF3DDF54}"
+ ProjectSection(SolutionItems) = preProject
+ test\integration\Directory.Build.props = test\integration\Directory.Build.props
+ EndProjectSection
EndProject
Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "component", "component", "{08B41FFA-CEE3-46A7-B5C0-3EB65D37A16C}"
ProjectSection(SolutionItems) = preProject
@@ -298,6 +304,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Elsa.Persistence.EFCore.Sql
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Elsa.Alterations.IntegrationTests", "test\integration\Elsa.Alterations.IntegrationTests\Elsa.Alterations.IntegrationTests.csproj", "{51C39AF0-4F41-4FC1-AEBD-D1494407D3F9}"
EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Elsa.Activities.UnitTests", "test\unit\Elsa.Activities.UnitTests\Elsa.Activities.UnitTests.csproj", "{2DA466EB-CBF0-46EC-8B86-45CAF2B68BBA}"
+EndProject
Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "qa", "qa", "{0478E6EA-DCB2-4667-ADC2-37C62C9C2574}"
ProjectSection(SolutionItems) = preProject
doc\qa\test-guidelines.md = doc\qa\test-guidelines.md
@@ -607,6 +615,10 @@ Global
{51C39AF0-4F41-4FC1-AEBD-D1494407D3F9}.Debug|Any CPU.Build.0 = Debug|Any CPU
{51C39AF0-4F41-4FC1-AEBD-D1494407D3F9}.Release|Any CPU.ActiveCfg = Release|Any CPU
{51C39AF0-4F41-4FC1-AEBD-D1494407D3F9}.Release|Any CPU.Build.0 = Release|Any CPU
+ {2DA466EB-CBF0-46EC-8B86-45CAF2B68BBA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {2DA466EB-CBF0-46EC-8B86-45CAF2B68BBA}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {2DA466EB-CBF0-46EC-8B86-45CAF2B68BBA}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {2DA466EB-CBF0-46EC-8B86-45CAF2B68BBA}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
@@ -633,7 +645,6 @@ Global
{5948B0A5-7873-4DBB-BA03-EB283D6EA91B} = {5BA4A8FA-F7F4-45B3-AEC8-8886D35AAC79}
{B08B4E00-C2AB-48F3-8389-449F42AEF179} = {5BA4A8FA-F7F4-45B3-AEC8-8886D35AAC79}
{28818676-F6AF-4203-8B65-BD33A50CB9A2} = {C6658DE0-2B2F-47F0-BB61-2CA66D435C09}
- {DC9CCAD0-7363-4691-B964-FF5B3AEA3F95} = {18453B51-25EB-4317-A4B3-B10518252E92}
{29638A67-E79F-44FE-AC05-DA499EBA929E} = {2F3E1026-5054-4E1F-899B-F1A7F70F9912}
{A516931E-EDBB-4FC3-BB94-1BB824D5BC61} = {5BA4A8FA-F7F4-45B3-AEC8-8886D35AAC79}
{BBCE36D1-6767-4ED1-B3E8-84D2567A962A} = {A516931E-EDBB-4FC3-BB94-1BB824D5BC61}
@@ -700,6 +711,8 @@ Global
{71D5178D-2490-4681-8621-BF8DED964F33} = {3D0A6C71-4B96-411B-80DB-DDFAFF77C748}
{698051E0-7981-43D4-B7BA-F3D8B65004A1} = {3D0A6C71-4B96-411B-80DB-DDFAFF77C748}
{51C39AF0-4F41-4FC1-AEBD-D1494407D3F9} = {1B8D5897-902E-4632-8698-E89CAF3DDF54}
+ {DC9CCAD0-7363-4691-B964-FF5B3AEA3F95} = {18453B51-25EB-4317-A4B3-B10518252E92}
+ {2DA466EB-CBF0-46EC-8B86-45CAF2B68BBA} = {18453B51-25EB-4317-A4B3-B10518252E92}
{0478E6EA-DCB2-4667-ADC2-37C62C9C2574} = {0354F050-3992-4DD4-B0EE-5FBA04AC72B6}
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
diff --git a/src/modules/Elsa.Workflows.Core/Activities/SetVariable.cs b/src/modules/Elsa.Workflows.Core/Activities/SetVariable.cs
index a12b35086..689e847e6 100644
--- a/src/modules/Elsa.Workflows.Core/Activities/SetVariable.cs
+++ b/src/modules/Elsa.Workflows.Core/Activities/SetVariable.cs
@@ -89,7 +89,7 @@ public class SetVariable : CodeActivity
/// The variable to assign the value to.
///
[Input(Description = "The variable to assign the value to.")]
- public Variable Variable { get; set; } = null!;
+ public Variable? Variable { get; set; }
///
/// The value to assign.
@@ -101,9 +101,13 @@ public class SetVariable : CodeActivity
protected override void Execute(ActivityExecutionContext context)
{
// Always refer to the variable by ID to ensure that the variable is resolved from the correct scope.
- var variableId = Variable.Id;
+ var variableId = Variable?.Id;
var variable = context.ExpressionExecutionContext.EnumerateVariablesInScope().FirstOrDefault(x => x.Id == variableId);
+
+ if (variable == null)
+ throw new InvalidOperationException($"Variable '{variableId}' not found.");
+
var value = context.Get(Value);
- variable?.Set(context, value);
+ variable.Set(context, value);
}
}
\ No newline at end of file
diff --git a/src/modules/Elsa.Workflows.Core/Services/ActivityRegistry.cs b/src/modules/Elsa.Workflows.Core/Services/ActivityRegistry.cs
index 282d07be3..f5b4482ca 100644
--- a/src/modules/Elsa.Workflows.Core/Services/ActivityRegistry.cs
+++ b/src/modules/Elsa.Workflows.Core/Services/ActivityRegistry.cs
@@ -57,7 +57,6 @@ public class ActivityRegistry(IActivityDescriber activityDescriber, IEnumerable<
var activityDescriptor = await activityDescriber.DescribeActivityAsync(activityType, cancellationToken);
-
Add(activityDescriptor, _activityDescriptors, _manualActivityDescriptors);
_manualActivityDescriptors.Add(activityDescriptor);
}
diff --git a/test/Directory.Build.props b/test/Directory.Build.props
index 03f0023c2..108bef4c9 100644
--- a/test/Directory.Build.props
+++ b/test/Directory.Build.props
@@ -9,6 +9,15 @@
false
true
false
+ true
+ cobertura,lcov,opencover
+ $(MSBuildThisFileDirectory)../artifacts/coverage/$(MSBuildProjectName)/coverage
+ 10
+ line
+ total
+
+ [*Elsa.Testing.Shared*]*
+
@@ -17,7 +26,7 @@
-
+
@@ -26,4 +35,4 @@
-
\ No newline at end of file
+
diff --git a/test/component/Directory.Build.props b/test/component/Directory.Build.props
index 94e6bc5b1..e6ff014e4 100644
--- a/test/component/Directory.Build.props
+++ b/test/component/Directory.Build.props
@@ -1,7 +1,11 @@
-
+
+
+ 40
+
+
diff --git a/test/integration/Directory.Build.props b/test/integration/Directory.Build.props
new file mode 100644
index 000000000..d4fc658e9
--- /dev/null
+++ b/test/integration/Directory.Build.props
@@ -0,0 +1,9 @@
+
+
+
+
+
+ 10
+
+
+
diff --git a/test/integration/Elsa.Workflows.IntegrationTests/Elsa.Workflows.IntegrationTests.csproj b/test/integration/Elsa.Workflows.IntegrationTests/Elsa.Workflows.IntegrationTests.csproj
index 79007a43c..f3487fa1f 100644
--- a/test/integration/Elsa.Workflows.IntegrationTests/Elsa.Workflows.IntegrationTests.csproj
+++ b/test/integration/Elsa.Workflows.IntegrationTests/Elsa.Workflows.IntegrationTests.csproj
@@ -32,5 +32,8 @@
Always
+
+ Always
+
diff --git a/test/integration/Elsa.Workflows.IntegrationTests/Scenarios/JoinBehaviors/ForkDecisionJoinTests.cs b/test/integration/Elsa.Workflows.IntegrationTests/Scenarios/JoinBehaviors/ForkDecisionJoinTests.cs
index c3aca5a2a..f3d678175 100644
--- a/test/integration/Elsa.Workflows.IntegrationTests/Scenarios/JoinBehaviors/ForkDecisionJoinTests.cs
+++ b/test/integration/Elsa.Workflows.IntegrationTests/Scenarios/JoinBehaviors/ForkDecisionJoinTests.cs
@@ -31,6 +31,22 @@ public class ForkDecisionJoinTests
await RunAndAssert("fork-decision-join-waitall.json", ["A", "C", "B", "D"]);
}
+ [Fact(DisplayName = "An implicit join from the True and False branches should execute because the join mode is None and by default, all active branches are joined.")]
+ public async Task ImplicitJoinFromBranchesShouldExecute()
+ {
+ // Populate registries.
+ await _services.PopulateRegistriesAsync();
+
+ // Import workflow.
+ var workflowDefinition = await _services.ImportWorkflowDefinitionAsync($"Scenarios/JoinBehaviors/Workflows/decision-merge-join-none.json");
+
+ // Execute.
+ var workflowState = await _services.RunWorkflowUntilEndAsync(workflowDefinition.DefinitionId);
+
+ // Assert.
+ Assert.Equal(WorkflowStatus.Finished, workflowState.Status);
+ }
+
private async Task RunAndAssert(string workflowFileName, string[] expectedLines)
{
// Populate registries.
diff --git a/test/integration/Elsa.Workflows.IntegrationTests/Scenarios/JoinBehaviors/Workflows/decision-merge-join-none.json b/test/integration/Elsa.Workflows.IntegrationTests/Scenarios/JoinBehaviors/Workflows/decision-merge-join-none.json
new file mode 100644
index 000000000..81820da59
--- /dev/null
+++ b/test/integration/Elsa.Workflows.IntegrationTests/Scenarios/JoinBehaviors/Workflows/decision-merge-join-none.json
@@ -0,0 +1 @@
+{"$schema":"https://elsaworkflows.io/schemas/workflow-definition/v3.0.0/schema.json","id":"c2601be150ec7739","definitionId":"b8c92c080faf734f","name":"Decision Merge","createdAt":"2025-10-08T19:00:25.918638\u002B00:00","version":5,"toolVersion":"3.6.0.0","variables":[],"inputs":[],"outputs":[],"outcomes":[],"customProperties":{},"isReadonly":false,"isSystem":false,"isLatest":true,"isPublished":true,"options":{"autoUpdateConsumingWorkflows":false},"root":{"id":"990d07168c5223de","nodeId":"Workflow1:990d07168c5223de","name":"Flowchart1","type":"Elsa.Flowchart","version":1,"customProperties":{"notFoundConnections":[],"canStartWorkflow":false,"runAsynchronously":false},"metadata":{},"activities":[{"condition":{"typeName":"Boolean","expression":{"type":"Literal","value":false}},"id":"a38215f28410f472","nodeId":"Workflow1:990d07168c5223de:a38215f28410f472","name":"FlowDecision1","type":"Elsa.FlowDecision","version":1,"customProperties":{"canStartWorkflow":false,"runAsynchronously":false},"metadata":{"designer":{"position":{"x":-237.5,"y":-255.5},"size":{"width":149.84375,"height":67.9765625}}}},{"id":"50e042cfab596891","nodeId":"Workflow1:990d07168c5223de:50e042cfab596891","name":"Start1","type":"Elsa.Start","version":1,"customProperties":{"canStartWorkflow":false,"runAsynchronously":false},"metadata":{"designer":{"position":{"x":-485.5,"y":-255.5},"size":{"width":122.6484375,"height":67.9765625}}}},{"id":"d5b9c2affe09a93b","nodeId":"Workflow1:990d07168c5223de:d5b9c2affe09a93b","name":"End1","type":"Elsa.End","version":1,"customProperties":{"canStartWorkflow":false,"runAsynchronously":false,"mergeMode":"None"},"metadata":{"designer":{"position":{"x":75.5,"y":-255.5},"size":{"width":115.3125,"height":67.9765625}}}}],"variables":[],"connections":[{"source":{"activity":"50e042cfab596891","port":"Done"},"target":{"activity":"a38215f28410f472","port":"In"},"vertices":[]},{"source":{"activity":"a38215f28410f472","port":"True"},"target":{"activity":"d5b9c2affe09a93b","port":"In"},"vertices":[]},{"source":{"activity":"a38215f28410f472","port":"False"},"target":{"activity":"d5b9c2affe09a93b","port":"In"},"vertices":[]}]}}
\ No newline at end of file
diff --git a/test/performance/Elsa.Workflows.PerformanceTests/Elsa.Workflows.PerformanceTests.csproj b/test/performance/Elsa.Workflows.PerformanceTests/Elsa.Workflows.PerformanceTests.csproj
index ee58b4574..244833891 100644
--- a/test/performance/Elsa.Workflows.PerformanceTests/Elsa.Workflows.PerformanceTests.csproj
+++ b/test/performance/Elsa.Workflows.PerformanceTests/Elsa.Workflows.PerformanceTests.csproj
@@ -7,6 +7,7 @@
false
Exe
+ false
diff --git a/test/unit/Directory.Build.props b/test/unit/Directory.Build.props
new file mode 100644
index 000000000..7e5383630
--- /dev/null
+++ b/test/unit/Directory.Build.props
@@ -0,0 +1,9 @@
+
+
+
+
+
+ 0
+
+
+
diff --git a/test/unit/Elsa.Activities.UnitTests/Elsa.Activities.UnitTests.csproj b/test/unit/Elsa.Activities.UnitTests/Elsa.Activities.UnitTests.csproj
new file mode 100644
index 000000000..3017b8a33
--- /dev/null
+++ b/test/unit/Elsa.Activities.UnitTests/Elsa.Activities.UnitTests.csproj
@@ -0,0 +1,12 @@
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/test/unit/Elsa.Activities.UnitTests/Helpers/ActivityTestHelper.cs b/test/unit/Elsa.Activities.UnitTests/Helpers/ActivityTestHelper.cs
new file mode 100644
index 000000000..b8f623ed6
--- /dev/null
+++ b/test/unit/Elsa.Activities.UnitTests/Helpers/ActivityTestHelper.cs
@@ -0,0 +1,123 @@
+using Elsa.Common;
+using Elsa.Expressions.Contracts;
+using Elsa.Expressions.Services;
+using Elsa.Extensions;
+using Elsa.Mediator.Contracts;
+using Elsa.Workflows;
+using Elsa.Workflows.CommitStates;
+using Elsa.Workflows.Management.Providers;
+using Elsa.Workflows.Management.Services;
+using Elsa.Workflows.PortResolvers;
+using Microsoft.Extensions.DependencyInjection;
+using NSubstitute;
+
+namespace Elsa.Activities.UnitTests.Helpers;
+
+///
+/// Helper class for unit testing activities in isolation.
+/// Provides methods to execute activities with minimal setup, abstracting away the complexity
+/// of creating WorkflowExecutionContext and ActivityExecutionContext.
+///
+public static class ActivityTestHelper
+{
+ ///
+ /// Executes an activity in isolation for unit testing purposes and returns the execution context.
+ /// This method handles all the complexity of setting up the execution context,
+ /// evaluating inputs, and executing the activity.
+ ///
+ /// The activity to execute
+ /// An optional action to configure the service collection for dependency injection during activity execution.
+ /// The ActivityExecutionContext used for execution
+ public static async Task ExecuteActivityAsync(IActivity activity, Action? configureServices = null)
+ {
+ var context = await CreateMinimalActivityExecutionContext(activity, configureServices);
+
+ // Set up variables and inputs, then execute the activity
+ await SetupExistingVariablesAsync(activity, context);
+ await context.EvaluateInputPropertiesAsync();
+ await activity.ExecuteAsync(context);
+
+ return context;
+ }
+
+ ///
+ /// Creates a minimal ActivityExecutionContext suitable for isolated unit testing of activities.
+ /// This helper method creates a real WorkflowExecutionContext using the minimal workflow pattern
+ /// to provide proper context for activities.
+ ///
+ private static async Task CreateMinimalActivityExecutionContext(IActivity activity, Action? configureServices)
+ {
+ // Create a minimal service provider with the required services for expression evaluation
+ var services = new ServiceCollection();
+
+ // Add core services
+ services.AddLogging();
+ services.AddSingleton(_ => Substitute.For());
+ services.AddSingleton(_ => Substitute.For());
+ services.AddSingleton();
+ services.AddScoped();
+ services.AddSingleton();
+ services.AddSingleton();
+ services.AddSingleton();
+ services.AddSingleton();
+ services.AddSingleton();
+ services.AddSingleton();
+ services.AddScoped();
+ services.AddScoped();
+ services.AddScoped();
+ services.AddScoped();
+ services.AddScoped();
+ services.AddScoped();
+
+ // Add the default expression descriptor provider which includes Literal expressions
+ services.AddSingleton();
+ services.AddSingleton();
+
+ services.AddSingleton(_ => Substitute.For());
+
+ services.AddSingleton(_ => Substitute.For());
+ services.AddSingleton(_ => Substitute.For());
+ services.AddSingleton(_ => Substitute.For());
+
+ // Call the configure services action if provided.
+ configureServices?.Invoke(services);
+
+ var serviceProvider = services.BuildServiceProvider();
+ var activityRegistry = serviceProvider.GetRequiredService();
+ var workflowGraphBuilder = serviceProvider.GetRequiredService();
+ await activityRegistry.RegisterAsync(activity.GetType());
+ var workflow = Workflow.FromActivity(activity);
+ var workflowGraph = await workflowGraphBuilder.BuildAsync(workflow);
+
+ // Create workflow execution context using the static factory method
+ var workflowExecutionContext = await WorkflowExecutionContext.CreateAsync(
+ serviceProvider,
+ workflowGraph,
+ $"test-instance-{Guid.NewGuid()}",
+ CancellationToken.None
+ );
+
+ // Create ActivityExecutionContext for the actual activity we want to test
+ return await workflowExecutionContext.CreateActivityExecutionContextAsync(activity);
+ }
+
+ ///
+ /// Sets up existing variables found on the activity in the execution context.
+ /// This is necessary because in unit tests, variables need to be initialized.
+ ///
+ private static Task SetupExistingVariablesAsync(IActivity activity, ActivityExecutionContext context)
+ {
+ var activityType = activity.GetType();
+ var variableProperties = activityType.GetProperties()
+ .Where(p => p.PropertyType.IsGenericType &&
+ p.PropertyType.GetGenericTypeDefinition() == typeof(Variable<>))
+ .ToList();
+
+ foreach (var variable in variableProperties.Select(property => (Variable)property.GetValue(activity)!))
+ {
+ variable.Set(context.ExpressionExecutionContext, variable.Value);
+ }
+
+ return Task.CompletedTask;
+ }
+}
\ No newline at end of file
diff --git a/test/unit/Elsa.Activities.UnitTests/Primitives/SetVariableTests.cs b/test/unit/Elsa.Activities.UnitTests/Primitives/SetVariableTests.cs
new file mode 100644
index 000000000..2f5c7ec5d
--- /dev/null
+++ b/test/unit/Elsa.Activities.UnitTests/Primitives/SetVariableTests.cs
@@ -0,0 +1,49 @@
+using Elsa.Activities.UnitTests.Helpers;
+
+namespace Elsa.Activities.UnitTests.Primitives;
+
+public class SetVariableTests
+{
+ [Fact]
+ public async Task Should_Set_Variable_Integer()
+ {
+ // Arrange
+ const int expected = 42; // The answer to life, the universe and everything.
+ var variable = new Variable("myVar", 0, "myVar");
+ var setVariable = new SetVariable(variable, new Input(expected));
+
+ // Act
+ var context = await ActivityTestHelper.ExecuteActivityAsync(setVariable);
+
+ // Assert
+ var result = variable.Get(context);
+ Assert.Equal(expected, result);
+ }
+
+ [Fact]
+ public async Task Should_Throw_When_Variable_Is_Null()
+ {
+ // Arrange
+ var setVariable = new SetVariable(null!, new Input("test value"));
+
+ // Act & Assert
+ var exception = await Record.ExceptionAsync(async () => await ActivityTestHelper.ExecuteActivityAsync(setVariable));
+
+ Assert.NotNull(exception);
+ }
+
+ [Fact]
+ public async Task Should_Set_Variable_To_Null_Value()
+ {
+ // Arrange
+ var variable = new Variable("myVar", "initial value", "myVar");
+ var setVariable = new SetVariable(variable, new Input((string?)null));
+
+ // Act
+ var context = await ActivityTestHelper.ExecuteActivityAsync(setVariable);
+
+ // Assert
+ var result = variable.Get(context);
+ Assert.Null(result);
+ }
+}
\ No newline at end of file
diff --git a/test/unit/Elsa.Activities.UnitTests/Usings.cs b/test/unit/Elsa.Activities.UnitTests/Usings.cs
new file mode 100644
index 000000000..b45935d97
--- /dev/null
+++ b/test/unit/Elsa.Activities.UnitTests/Usings.cs
@@ -0,0 +1,3 @@
+global using Elsa.Workflows.Activities;
+global using Elsa.Workflows.Memory;
+global using Elsa.Workflows.Models;
\ No newline at end of file
diff --git a/test/unit/Elsa.Common.Core/Elsa.Common.Core.csproj b/test/unit/Elsa.Common.Core/Elsa.Common.Core.csproj
deleted file mode 100644
index 0d2efc651..000000000
--- a/test/unit/Elsa.Common.Core/Elsa.Common.Core.csproj
+++ /dev/null
@@ -1,5 +0,0 @@
-
-
-
-
-
diff --git a/test/unit/Elsa.Common.Core/EnumerableExtensionsTests.cs b/test/unit/Elsa.Common.Core/EnumerableExtensionsTests.cs
deleted file mode 100644
index 3c1598fe8..000000000
--- a/test/unit/Elsa.Common.Core/EnumerableExtensionsTests.cs
+++ /dev/null
@@ -1,29 +0,0 @@
-using Elsa.Extensions;
-using Xunit;
-
-namespace Elsa.Common.Core;
-
-public class EnumerableExtensionsTests
-{
- [Fact]
- public void ToBatches_ReturnsItemsInListOfPages()
- {
- var items = new List
- {
- 1,
- 2,
- 3,
- 4,
- 5
- };
- var batchSize = 2;
- var batches = items.ToBatches(batchSize).ToList();
-
- Assert.Equal(3, batches.Count);
- Assert.Equal(2, batches.ElementAt(0).Count());
- Assert.Equal(2, batches.ElementAt(1).Count());
- Assert.Equal(1, batches.ElementAt(2).Count());
- Assert.Equal(3, batches.ElementAt(1).ElementAt(0));
- Assert.Equal(4, batches.ElementAt(1).ElementAt(1));
- }
-}
\ No newline at end of file