diff --git a/integration_test/integration_test.go b/integration_test/integration_test.go
index 041dcca..f5b73bd 100644
--- a/integration_test/integration_test.go
+++ b/integration_test/integration_test.go
@@ -9,7 +9,7 @@ import (
 )
 
 func TestHelmTestShouldSucceed(t *testing.T) {
-	l := framework.NewLoader("testdata/helmtest")
+	l := framework.NewLoader("testdata/helmtest", framework.WithAdditionalTestDirs("testdata/helmtest/additional_directory"))
 	s, err := l.LoadSuite()
 	require.NoError(t, err)
 
diff --git a/integration_test/testdata/helmtest/additional_directory/inhereit_defines.test.yaml b/integration_test/testdata/helmtest/additional_directory/inhereit_defines.test.yaml
new file mode 100644
index 0000000..0774d46
--- /dev/null
+++ b/integration_test/testdata/helmtest/additional_directory/inhereit_defines.test.yaml
@@ -0,0 +1,4 @@
+tests:
+  - name: "use inhereited defined function"
+    expect:
+      container(.deployments.nginx; "nginx") | assertThat(. != null)
diff --git a/integration_test/testdata/helmtest/suite.yaml b/integration_test/testdata/helmtest/suite.yaml
index b6e02b3..1d4cdfb 100644
--- a/integration_test/testdata/helmtest/suite.yaml
+++ b/integration_test/testdata/helmtest/suite.yaml
@@ -1,3 +1,11 @@
+defs: |
+  def container(obj; name):
+    obj.spec.template.spec.containers[] | select(.name == name);
 server:
   visibleSchemas:
     - kubernetes-1.20.2
+
+tests:
+  - name: "use defined function"
+    expect:
+      container(.deployments.nginx; "nginx") | assertThat(. != null)
diff --git a/integration_test/testdata/nginx-example/templates/deployment.yaml b/integration_test/testdata/nginx-example/templates/deployment.yaml
index 71f128d..2145331 100644
--- a/integration_test/testdata/nginx-example/templates/deployment.yaml
+++ b/integration_test/testdata/nginx-example/templates/deployment.yaml
@@ -28,7 +28,7 @@ spec:
       securityContext:
         {{- toYaml .Values.podSecurityContext | nindent 8 }}
       containers:
-        - name: {{ .Chart.Name }}
+        - name: nginx
           securityContext:
             {{- toYaml .Values.securityContext | nindent 12 }}
           image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
diff --git a/integration_test/testdata/nginx-example/values.yaml b/integration_test/testdata/nginx-example/values.yaml
index 1e6e960..4f665f3 100644
--- a/integration_test/testdata/nginx-example/values.yaml
+++ b/integration_test/testdata/nginx-example/values.yaml
@@ -12,7 +12,7 @@ image:
 
 imagePullSecrets: []
 nameOverride: ""
-fullnameOverride: ""
+fullnameOverride: "nginx"
 
 serviceAccount:
   # Specifies whether a service account should be created