From 72a28665086c27f3c489f09f1edf09212e0dd7f7 Mon Sep 17 00:00:00 2001
From: Marcel Boehm <marcel.boehm@inovex.de>
Date: Tue, 15 Apr 2025 11:36:32 +0200
Subject: [PATCH] Add test for reading multiple Kustomizations in a single file

Signed-off-by: Marcel Boehm <marcel.boehm@inovex.de>
---
 internal/build/build_test.go                   | 10 ++++++++++
 .../local-kustomization/multi-doc-reset.yaml   | 18 ++++++++++++++++++
 2 files changed, 28 insertions(+)
 create mode 100644 internal/build/testdata/local-kustomization/multi-doc-reset.yaml

diff --git a/internal/build/build_test.go b/internal/build/build_test.go
index affc0d69..bf82513f 100644
--- a/internal/build/build_test.go
+++ b/internal/build/build_test.go
@@ -226,6 +226,16 @@ func Test_unMarshallKustomization(t *testing.T) {
 			}
 		})
 	}
+	t.Run("correct parsing of multiple documents", func(t *testing.T) {
+		b.kustomizationFile = "testdata/local-kustomization/multi-doc-reset.yaml"
+		ks, err := b.unMarshallKustomization()
+		if err != nil {
+			t.Errorf("unexpected err '%s'", err)
+		}
+		if len(ks.Spec.Components) > 0 {
+			t.Errorf("previous Kustomization in file leaked into subsequent Kustomizations")
+		}
+	})
 }
 
 func Test_ResolveKustomization(t *testing.T) {
diff --git a/internal/build/testdata/local-kustomization/multi-doc-reset.yaml b/internal/build/testdata/local-kustomization/multi-doc-reset.yaml
new file mode 100644
index 00000000..fcbe73b8
--- /dev/null
+++ b/internal/build/testdata/local-kustomization/multi-doc-reset.yaml
@@ -0,0 +1,18 @@
+apiVersion: kustomize.toolkit.fluxcd.io/v1
+kind: Kustomization
+metadata:
+  name: first
+  namespace: flux-system
+spec:
+  path: "./k8s/first"
+  components:
+  - foo
+---
+apiVersion: kustomize.toolkit.fluxcd.io/v1
+kind: Kustomization
+metadata:
+  name: podinfo
+  namespace: flux-system
+spec:
+  path: "./k8s/second"
+---