Replace bash release helper scripts with Go progam

cmd/gorepomod/internal/misc/moduleshortname_test.go

@@ -0,0 +1,36 @@
+package misc_test
+
+import (
+	"testing"
+
+	"sigs.k8s.io/kustomize/cmd/gorepomod/internal/misc"
+)
+
+func TestDepth(t *testing.T) {
+	var testCases = map[string]struct {
+		path          string
+		expectedDepth int
+	}{
+		"zero": {
+			path:          "{top}",
+			expectedDepth: 0,
+		},
+		"one": {
+			path:          "one",
+			expectedDepth: 1,
+		},
+		"three": {
+			path:          "one/two/three",
+			expectedDepth: 3,
+		},
+	}
+	for n, tc := range testCases {
+		m := misc.ModuleShortName(tc.path)
+		d := m.Depth()
+		if d != tc.expectedDepth {
+			t.Fatalf(
+				"%s: %s, expected %d, got %d",
+				n, tc.path, tc.expectedDepth, d)
+		}
+	}
+}