diff --git a/test/test/herd/depin/engine/integration/ClassInjectionTest.ceylon b/test/test/herd/depin/engine/integration/ClassInjectionTest.ceylon
index bbed9df..522b48d 100644
--- a/test/test/herd/depin/engine/integration/ClassInjectionTest.ceylon
+++ b/test/test/herd/depin/engine/integration/ClassInjectionTest.ceylon
@@ -10,7 +10,9 @@ import test.herd.depin.engine.integration.model {
 	Person,
 	fixture,
 	DataSource,
-	DefaultParametersModel
+	DefaultParametersConstructor,
+	DefaultedParametersByFunction,
+	DefaultedParameterFunction
 }
 shared class ClassInjectionTest() {
 	
@@ -26,7 +28,12 @@ shared class ClassInjectionTest() {
 		assert(depin.inject(`DataSource`)==fixture.dataSouce.mysqlDataSource);
 	}
 	shared test void shouldInjectNonDefaultParameters(){
-		assert(depin.inject(`DefaultParametersModel`)==fixture.defaultParameter.instance);
+		assert(depin.inject(`DefaultParametersConstructor`)==fixture.defaultParameter.instance);
+	}
+	shared test void shouldInjectDefaultedParameterFromFunction(){
+		assert(depin.inject(`DefaultedParametersByFunction`)==fixture.defaultedParameterByFunction.instance);
+	}
+	shared test void shouldInjectDefaultedParameterClassFunction(){
+		assert(depin.inject(`DefaultedParameterFunction`).fun()==fixture.defaultedParameterFunction.param);
 	}
-	
 }
\ No newline at end of file
diff --git a/test/test/herd/depin/engine/integration/dependencies/defaultParametersDependencies.ceylon b/test/test/herd/depin/engine/integration/dependencies/defaultParametersDependencies.ceylon
index 52f7aca..38b8135 100644
--- a/test/test/herd/depin/engine/integration/dependencies/defaultParametersDependencies.ceylon
+++ b/test/test/herd/depin/engine/integration/dependencies/defaultParametersDependencies.ceylon
@@ -4,4 +4,9 @@ import test.herd.depin.engine.integration.model {
 import herd.depin.engine {
 	dependency
 }
-shared dependency String nonDefault=fixture.defaultParameter.nonDefault;
\ No newline at end of file
+shared dependency String nonDefault=fixture.defaultParameter.nonDefault;
+
+
+shared dependency String defaultedByFunction(String defaulted=fixture.defaultedParameterByFunction.param){
+	return defaulted;
+}
diff --git a/test/test/herd/depin/engine/integration/model/DefaultParametersModel.ceylon b/test/test/herd/depin/engine/integration/model/DefaultParametersConstructor.ceylon
similarity index 65%
rename from test/test/herd/depin/engine/integration/model/DefaultParametersModel.ceylon
rename to test/test/herd/depin/engine/integration/model/DefaultParametersConstructor.ceylon
index ec0a8ee..fea3693 100644
--- a/test/test/herd/depin/engine/integration/model/DefaultParametersModel.ceylon
+++ b/test/test/herd/depin/engine/integration/model/DefaultParametersConstructor.ceylon
@@ -1,8 +1,8 @@
-shared class DefaultParametersModel(shared String nonDefault,shared String defaultedParameter=fixture.defaultParameter.text) {
+shared class DefaultParametersConstructor(shared String nonDefault,shared String defaultedParameter=fixture.defaultParameter.text) {
 	
 
 	shared actual Boolean equals(Object that) {
-		if (is DefaultParametersModel that) {
+		if (is DefaultParametersConstructor that) {
 			return nonDefault==that.nonDefault && 
 				defaultedParameter==that.defaultedParameter;
 		}
diff --git a/test/test/herd/depin/engine/integration/model/DefaultedParameterFunction.ceylon b/test/test/herd/depin/engine/integration/model/DefaultedParameterFunction.ceylon
new file mode 100644
index 0000000..ac2fb69
--- /dev/null
+++ b/test/test/herd/depin/engine/integration/model/DefaultedParameterFunction.ceylon
@@ -0,0 +1,18 @@
+shared class DefaultedParameterFunction(shared String fun()=> fixture.defaultedParameterFunction.param) {
+
+	shared actual Boolean equals(Object that) {
+		if (is DefaultedParameterFunction that) {
+			return true;
+		}
+		else {
+			return false;
+		}
+	}
+	
+	shared actual Integer hash {
+		variable value hash = 1;
+		return hash;
+	}
+	
+	
+}
\ No newline at end of file
diff --git a/test/test/herd/depin/engine/integration/model/DefaultedParametersByFunction.ceylon b/test/test/herd/depin/engine/integration/model/DefaultedParametersByFunction.ceylon
new file mode 100644
index 0000000..d8bb710
--- /dev/null
+++ b/test/test/herd/depin/engine/integration/model/DefaultedParametersByFunction.ceylon
@@ -0,0 +1,15 @@
+shared class DefaultedParametersByFunction(shared String defaultedByFunction) {
+	
+
+	shared actual Boolean equals(Object that) {
+		if (is DefaultedParametersByFunction that) {
+			return defaultedByFunction==that.defaultedByFunction;
+		}
+		else {
+			return false;
+		}
+	}
+	
+	shared actual Integer hash => defaultedByFunction.hash;
+	
+}
\ No newline at end of file
diff --git a/test/test/herd/depin/engine/integration/model/fixture.ceylon b/test/test/herd/depin/engine/integration/model/fixture.ceylon
index 8a83e25..82b990e 100644
--- a/test/test/herd/depin/engine/integration/model/fixture.ceylon
+++ b/test/test/herd/depin/engine/integration/model/fixture.ceylon
@@ -14,6 +14,13 @@ shared object fixture {
 	shared object defaultParameter{
 		shared String nonDefault="Abc";
 		shared String text="abc";
-		shared DefaultParametersModel instance=DefaultParametersModel(nonDefault,text) ;
+		shared DefaultParametersConstructor instance=DefaultParametersConstructor(nonDefault,text) ;
+	}
+	shared object defaultedParameterByFunction{
+		shared String param="abc";
+		shared DefaultedParametersByFunction instance= DefaultedParametersByFunction(param);
+	}
+	shared object defaultedParameterFunction {
+		shared String param = "abc";
 	}
 }
\ No newline at end of file