diff --git a/test/unit/services/optimize.metrics.test.ts b/test/unit/services/optimize.metrics.test.ts
new file mode 100644
index 000000000..6aae7050d
--- /dev/null
+++ b/test/unit/services/optimize.metrics.test.ts
@@ -0,0 +1,50 @@
+import { expect } from 'chai';
+import Optimize, { Optimizations } from '../../../src/apps/cli/commands/optimize';
+
+describe('Optimize.collectMetricsData', () => {
+  it('sets metrics metadata when selected optimizations are applied', () => {
+    // Create Optimize command instance
+    const cmd = new (Optimize as any)([], {});
+    // Simulate user-selected optimization
+    cmd.selectedOptimizations = [
+      Optimizations.MOVE_DUPLICATES_TO_COMPONENTS,
+    ];
+
+    // Ensure clean metrics state
+    (cmd as any).metricsMetadata = {};
+
+    // Fake optimizer report
+    const report = {
+      moveDuplicatesToComponents: [],
+    } as any;
+
+    // Call private method (allowed in tests)
+    (cmd as any).collectMetricsData(report);
+
+    // Assertions
+    expect((cmd as any).metricsMetadata.optimized).to.equal(true);
+    expect(
+      (cmd as any).metricsMetadata.optimization_moveDuplicatesToComponents
+    ).to.equal(true);
+  });
+
+  it('does not set metrics metadata when optimization was not selected', () => {
+    const cmd = new (Optimize as any)([], {});
+    // Different optimization selected
+    cmd.selectedOptimizations = [
+      Optimizations.REMOVE_COMPONENTS,
+    ];
+
+    (cmd as any).metricsMetadata = {};
+    const report = {
+      moveDuplicatesToComponents: [],
+    } as any;
+
+    (cmd as any).collectMetricsData(report);
+
+    expect((cmd as any).metricsMetadata.optimized).to.not.equal(true);
+    expect(
+      (cmd as any).metricsMetadata.optimization_moveDuplicatesToComponents
+    ).to.equal(undefined);
+  });
+});