fix(volume) File from project root failed

When mounting one file from the root of the project (e.g. ./file.txt),
the volume name is empty. In this case, we generate the volume name from
the subpath.

internal/generator/configMap_test.go

@@ -10,6 +10,7 @@ import (
 	"katenary.io/internal/generator/labels"
 
 	"github.com/compose-spec/compose-go/types"
+	appv1 "k8s.io/api/apps/v1"
 	v1 "k8s.io/api/core/v1"
 	"sigs.k8s.io/yaml"
 )
@@ -117,9 +118,15 @@ services:
 	io.WriteString(fooFp, fooTxt)
 	fooFp.Close()
 
-	output := internalCompileTest(t, "-s", "templates/web/statics/configmap.yaml")
+	cmOutput := internalCompileTestForce(t, "-s", "templates/web/statics/configmap.yaml")
+	depOutput := internalCompileTestForce(t, "-s", "templates/web/deployment.yaml")
+
 	configMap := v1.ConfigMap{}
-	if err := yaml.Unmarshal([]byte(output), &configMap); err != nil {
+	if err := yaml.Unmarshal([]byte(cmOutput), &configMap); err != nil {
+		t.Errorf(unmarshalError, err)
+	}
+	deployment := appv1.Deployment{}
+	if err := yaml.Unmarshal([]byte(depOutput), &deployment); err != nil {
 		t.Errorf(unmarshalError, err)
 	}
 	if configMap.Data == nil {
@@ -130,4 +137,12 @@ services:
 	if !valid.MatchString(configMap.Name) {
 		t.Errorf("ConfigMap name %s is not valid", configMap.Name)
 	}
+
+	// the volume mount should be named "configmap-<configmap name>"
+	if deployment.Spec.Template.Spec.Volumes[0].Name != deployment.Spec.Template.Spec.Containers[0].VolumeMounts[0].Name {
+		t.Errorf("Expected volume name to be %s, got %s",
+			deployment.Spec.Template.Spec.Containers[0].VolumeMounts[0].Name,
+			deployment.Spec.Template.Spec.Volumes[0].Name,
+		)
+	}
 }

internal/generator/generator.go

@@ -278,6 +278,7 @@ func addStaticVolumes(deployments map[string]*Deployment, service types.ServiceC
 		if y, err = config.configMap.Yaml(); err != nil {
 			log.Fatal(err)
 		}
+
 		// add the configmap to the chart
 		d.chart.Templates[config.configMap.Filename()] = &ChartTemplate{
 			Content:     y,
@@ -285,6 +286,10 @@ func addStaticVolumes(deployments map[string]*Deployment, service types.ServiceC
 		}
 		// add the moint path to the container
 		for _, m := range config.mountPath {
+			// volumeName can be empty, in this case we generate a name
+			if volumeName == "" {
+				volumeName = utils.PathToName(m.subPath)
+			}
 			container.VolumeMounts = append(container.VolumeMounts, corev1.VolumeMount{
 				Name:      utils.PathToName(volumeName),
 				MountPath: m.mountPath,

internal/generator/tools_test.go

@@ -29,13 +29,22 @@ func teardown(tmpDir string) {
 	}
 }
 
+// internalCompileTestForce is like internalCompileTest but with the force option enabled to rewrite the chart.
+func internalCompileTestForce(t *testing.T, options ...string) string {
+	return compileTest(t, true, options...)
+}
+
+// internalCompileTest is like compileTest but without the force option enabled to rewrite the chart.
 func internalCompileTest(t *testing.T, options ...string) string {
+	return compileTest(t, false, options...)
+}
+
+func compileTest(t *testing.T, force bool, options ...string) string {
 	_, err := parser.Parse(nil, nil, "compose.yml")
 	if err != nil {
 		t.Fatalf("Failed to parse the project: %s", err)
 	}
 
-	force := false
 	outputDir := "./chart"
 	profiles := make([]string, 0)
 	helmdepUpdate := true