ctl: add integration test case that exercises actual object conversion

Signed-off-by: James Munnelly <james@munnelly.eu>

test/integration/ctl/ctl_convert_test.go

@@ -29,6 +29,7 @@ const (
 	testdataResource1 = "./testdata/convert_resource1.yaml"
 	testdataResource2 = "./testdata/convert_resource2.yaml"
 	testdataResource3 = "./testdata/convert_resource3.yaml"
+	testdataResourceWithOrganizationV1alpha2 = "./testdata/convert_resource_with_organization_v1alpha2.yaml"
 
 	targetv1alpha2 = "cert-manager.io/v1alpha2"
 	targetv1alpha3 = "cert-manager.io/v1alpha3"
@@ -82,6 +83,29 @@ func TestCtlConvert(t *testing.T) {
 			targetVersion: targetv1alpha3,
 			expErr:        true,
 		},
+		"an object in v1alpha2 that uses a field that has been renamed in v1alpha3 should be converted properly": {
+			input: testdataResourceWithOrganizationV1alpha2,
+			targetVersion: targetv1alpha3,
+			expOutput: `
+apiVersion: cert-manager.io/v1alpha3
+kind: Certificate
+metadata:
+  creationTimestamp: null
+  name: ca-issuer
+  namespace: sandbox
+spec:
+  commonName: my-csi-app
+  isCA: true
+  subject:
+    organizations:
+    - hello world
+  issuerRef:
+    group: cert-manager.io
+    kind: Issuer
+    name: selfsigned-issuer
+  secretName: ca-key-pair
+status: {}`,
+		},
 	}
 
 	for name, test := range tests {

test/integration/ctl/testdata/convert_resource_with_organization_v1alpha2.yaml

@@ -0,0 +1,15 @@
+apiVersion: cert-manager.io/v1alpha2
+kind: Certificate
+metadata:
+  name: ca-issuer
+  namespace: sandbox
+spec:
+  isCA: true
+  secretName: ca-key-pair
+  organization:
+  - "hello world"
+  commonName: my-csi-app
+  issuerRef:
+    name: selfsigned-issuer
+    kind: Issuer
+    group: cert-manager.io