diff --git a/tests/NamespacesBase/Base.cpp b/tests/NamespacesBase/Base.cpp
new file mode 100644
index 00000000..898b50d5
--- /dev/null
+++ b/tests/NamespacesBase/Base.cpp
@@ -0,0 +1,13 @@
+#include "Base.h"
+
+
+Base::Base(int i)
+{
+    b = i;
+}
+
+
+Base::Base()
+{
+
+}
\ No newline at end of file
diff --git a/tests/NamespacesBase/Base.h b/tests/NamespacesBase/Base.h
new file mode 100644
index 00000000..b431de6c
--- /dev/null
+++ b/tests/NamespacesBase/Base.h
@@ -0,0 +1,11 @@
+#include "../Tests.h"
+
+class DLL_API Base
+{
+public:
+    Base(int i);
+    Base();
+
+private:
+    int b;
+};
\ No newline at end of file
diff --git a/tests/NamespacesBase/NamespacesBase.Tests.cs b/tests/NamespacesBase/NamespacesBase.Tests.cs
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/NamespacesBase/NamespacesBase.cs b/tests/NamespacesBase/NamespacesBase.cs
new file mode 100644
index 00000000..26c70277
--- /dev/null
+++ b/tests/NamespacesBase/NamespacesBase.cs
@@ -0,0 +1,81 @@
+?using System;
+using CppSharp.AST;
+using CppSharp.AST.Extensions;
+using CppSharp.Generators;
+using CppSharp.Generators.CSharp;
+using CppSharp.Passes;
+using CppSharp.Types;
+using CppSharp.Utils;
+using Attribute = CppSharp.AST.Attribute;
+using Type = CppSharp.AST.Type;
+
+namespace CppSharp.Tests
+{
+    public class TestAttributesPass : TranslationUnitPass
+    {
+        public override bool VisitFunctionDecl(Function function)
+        {
+            if (AlreadyVisited(function) || function.Name != "obsolete")
+                return false;
+
+            var attribute = new Attribute
+            {
+                Type = typeof(ObsoleteAttribute),
+                Value = string.Format("\"{0} is obsolete.\"", function.Name)
+            };
+
+            function.Attributes.Add(attribute);
+
+            return base.VisitFunctionDecl(function);
+        }
+    }
+
+    public class NamespacesBaseTests : GeneratorTest
+    {
+        public NamespacesBaseTests(GeneratorKind kind)
+            : base("NamespacesBase", kind)
+        {
+        }
+
+        public override void SetupPasses(Driver driver)
+        {
+            driver.Options.GenerateAbstractImpls = true;
+            driver.Options.GenerateInterfacesForMultipleInheritance = true;
+            driver.Options.GeneratePropertiesAdvanced = true;
+            driver.Options.GenerateVirtualTables = true;
+            driver.Options.GenerateCopyConstructors = true;
+            // To ensure that calls to constructors in conversion operators
+            // are not ambiguous with multiple inheritance pass enabled.
+            driver.Options.GenerateConversionOperators = true;
+            driver.TranslationUnitPasses.AddPass(new TestAttributesPass());
+            driver.Options.MarshalCharAsManagedChar = true;
+            driver.Options.GenerateDefaultValuesForArguments = true;
+            driver.Options.GenerateSingleCSharpFile = true;
+        }
+
+        public override void Preprocess(Driver driver, ASTContext ctx)
+        {
+            ctx.SetClassAsValueType("TestCopyConstructorVal");
+            ctx.SetClassAsValueType("QGenericArgument");
+
+            ctx.IgnoreClassWithName("IgnoredTypeInheritingNonIgnoredWithNoEmptyCtor");
+        }
+
+        public override void Postprocess(Driver driver, ASTContext ctx)
+        {
+            new CaseRenamePass(
+                RenameTargets.Function | RenameTargets.Method | RenameTargets.Property | RenameTargets.Delegate,
+                RenameCasePattern.UpperCamelCase).VisitLibrary(driver.ASTContext);
+        }
+
+    }
+    public class Namespaces {
+
+        public static void Main(string[] args)
+        {
+            ConsoleDriver.Run(new NamespacesBaseTests(GeneratorKind.CSharp));
+        }
+
+    }
+}
+
diff --git a/tests/NamespacesBase/premake4.lua b/tests/NamespacesBase/premake4.lua
new file mode 100644
index 00000000..0b7fc694
--- /dev/null
+++ b/tests/NamespacesBase/premake4.lua
@@ -0,0 +1,2 @@
+group "Tests/Namespaces"
+  SetupTestCSharp("NamespacesBase")
\ No newline at end of file
diff --git a/tests/NamespacesDerived/Derived.cpp b/tests/NamespacesDerived/Derived.cpp
new file mode 100644
index 00000000..66c6422e
--- /dev/null
+++ b/tests/NamespacesDerived/Derived.cpp
@@ -0,0 +1,6 @@
+#include "Derived.h"
+
+
+Derived::Derived() : Base(10), component(5)
+{
+}
diff --git a/tests/NamespacesDerived/Derived.h b/tests/NamespacesDerived/Derived.h
new file mode 100644
index 00000000..bc1103ed
--- /dev/null
+++ b/tests/NamespacesDerived/Derived.h
@@ -0,0 +1,13 @@
+#include "../Tests.h"
+#include "../NamespacesBase/Base.h"
+
+class DLL_API Derived : public Base
+{
+public:
+    Derived();
+
+    Base component;
+
+private:
+    int d;
+};
\ No newline at end of file
diff --git a/tests/NamespacesDerived/NamespacesDerived.Tests.cs b/tests/NamespacesDerived/NamespacesDerived.Tests.cs
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/NamespacesDerived/NamespacesDerived.cs b/tests/NamespacesDerived/NamespacesDerived.cs
new file mode 100644
index 00000000..3fb00665
--- /dev/null
+++ b/tests/NamespacesDerived/NamespacesDerived.cs
@@ -0,0 +1,91 @@
+?using System;
+using CppSharp.AST;
+using CppSharp.AST.Extensions;
+using CppSharp.Generators;
+using CppSharp.Generators.CSharp;
+using CppSharp.Passes;
+using CppSharp.Types;
+using CppSharp.Utils;
+using Attribute = CppSharp.AST.Attribute;
+using Type = CppSharp.AST.Type;
+
+namespace CppSharp.Tests
+{
+    public class TestAttributesPass : TranslationUnitPass
+    {
+        public override bool VisitFunctionDecl(Function function)
+        {
+            if (AlreadyVisited(function) || function.Name != "obsolete")
+                return false;
+
+            var attribute = new Attribute
+            {
+                Type = typeof(ObsoleteAttribute),
+                Value = string.Format("\"{0} is obsolete.\"", function.Name)
+            };
+
+            function.Attributes.Add(attribute);
+
+            return base.VisitFunctionDecl(function);
+        }
+    }
+
+    public class NamespacesDerivedTests : GeneratorTest
+    {
+        public NamespacesDerivedTests(GeneratorKind kind)
+            : base("NamespacesDerived", kind)
+        {
+        }
+
+        public override void SetupPasses(Driver driver)
+        {
+            driver.Options.GenerateAbstractImpls = true;
+            driver.Options.GenerateInterfacesForMultipleInheritance = true;
+            driver.Options.GeneratePropertiesAdvanced = true;
+            driver.Options.GenerateVirtualTables = true;
+            driver.Options.GenerateCopyConstructors = true;
+            // To ensure that calls to constructors in conversion operators
+            // are not ambiguous with multiple inheritance pass enabled.
+            driver.Options.GenerateConversionOperators = true;
+            driver.TranslationUnitPasses.AddPass(new TestAttributesPass());
+            driver.Options.MarshalCharAsManagedChar = true;
+            driver.Options.GenerateDefaultValuesForArguments = true;
+            driver.Options.GenerateSingleCSharpFile = true;
+            driver.Options.DependentNameSpaces.Add("NamespacesBase");
+        }
+
+        public override void Preprocess(Driver driver, ASTContext ctx)
+        {
+            foreach (TranslationUnit unit in ctx.TranslationUnits)
+            {
+                if (unit.FileName != "Derived.h")
+                {
+                    unit.ExplicityIgnored = true;
+                }
+            }
+            
+            ctx.SetClassAsValueType("TestCopyConstructorVal");
+            ctx.SetClassAsValueType("QGenericArgument");
+
+            ctx.IgnoreClassWithName("IgnoredTypeInheritingNonIgnoredWithNoEmptyCtor");
+        }
+
+        public override void Postprocess(Driver driver, ASTContext ctx)
+        {
+            new CaseRenamePass(
+                RenameTargets.Function | RenameTargets.Method | RenameTargets.Property | RenameTargets.Delegate,
+                RenameCasePattern.UpperCamelCase).VisitLibrary(driver.ASTContext);
+        }
+
+    }
+
+    public class Namespaces {
+
+        public static void Main(string[] args)
+        {
+            ConsoleDriver.Run(new NamespacesDerivedTests(GeneratorKind.CSharp));
+        }
+
+    }
+}
+
diff --git a/tests/NamespacesDerived/premake4.lua b/tests/NamespacesDerived/premake4.lua
new file mode 100644
index 00000000..de66eb52
--- /dev/null
+++ b/tests/NamespacesDerived/premake4.lua
@@ -0,0 +1,2 @@
+group "Tests/Namespaces"
+  SetupTestCSharp("NamespacesDerived")
\ No newline at end of file