diff --git a/cmd/common_test.go b/cmd/common_test.go
new file mode 100644
index 0000000..bb09def
--- /dev/null
+++ b/cmd/common_test.go
@@ -0,0 +1,71 @@
+package cmd
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestMapFromSlice(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name     string
+		input    []string
+		expected map[string]string
+	}{
+		{
+			name:     "empty slice",
+			input:    []string{},
+			expected: map[string]string{},
+		},
+		{
+			name:     "single element",
+			input:    []string{"step1"},
+			expected: map[string]string{"step1": ""},
+		},
+		{
+			name:     "multiple elements",
+			input:    []string{"step1", "step2", "step3"},
+			expected: map[string]string{"step1": "", "step2": "", "step3": ""},
+		},
+		{
+			name:     "duplicate elements",
+			input:    []string{"step1", "step1", "step2"},
+			expected: map[string]string{"step1": "", "step2": ""},
+		},
+		{
+			name:     "case sensitivity",
+			input:    []string{"Step1", "step1", "STEP1"},
+			expected: map[string]string{"Step1": "", "step1": "", "STEP1": ""},
+		},
+		{
+			name:     "special characters",
+			input:    []string{"step-1", "step_2", "step@3"},
+			expected: map[string]string{"step-1": "", "step_2": "", "step@3": ""},
+		},
+	}
+
+	for _, tt := range tests {
+		tt := tt // capture loop variable
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+			result := mapFromSlice(tt.input)
+			if !reflect.DeepEqual(result, tt.expected) {
+				t.Errorf("mapFromSlice(%v) = %v, want %v", tt.input, result, tt.expected)
+			}
+		})
+	}
+}
+
+func TestMapFromSlice_NilInput(t *testing.T) {
+	t.Parallel()
+
+	result := mapFromSlice(nil)
+	if result == nil {
+		t.Error("mapFromSlice(nil)  should not return nil map")
+	}
+	if len(result) != 0 {
+		t.Errorf("mapFromSlice(nil) = %v, want empty map", result)
+	}
+
+}