diff --git a/cmd/any2anexoj-cli/pretty_printer_test.go b/cmd/any2anexoj-cli/pretty_printer_test.go
index 06ab7d0..48cb3ca 100644
--- a/cmd/any2anexoj-cli/pretty_printer_test.go
+++ b/cmd/any2anexoj-cli/pretty_printer_test.go
@@ -1 +1,84 @@
 package main
+
+import (
+	"bytes"
+	"context"
+	"testing"
+	"time"
+
+	"github.com/nmoniz/any2anexoj/internal"
+	"github.com/shopspring/decimal"
+)
+
+func TestPrettyPrinter_Render(t *testing.T) {
+	// Create test data
+	aw := internal.NewAggregatorWriter()
+	ctx := context.Background()
+
+	// Add some sample report items
+	err := aw.Write(ctx, internal.ReportItem{
+		Symbol:        "AAPL",
+		Nature:        internal.NatureG01,
+		BrokerCountry: 826, // United Kingdom
+		AssetCountry:  840, // United States
+		BuyValue:      decimal.NewFromFloat(100.50),
+		BuyTimestamp:  time.Date(2023, 1, 15, 0, 0, 0, 0, time.UTC),
+		SellValue:     decimal.NewFromFloat(150.75),
+		SellTimestamp: time.Date(2023, 6, 20, 0, 0, 0, 0, time.UTC),
+		Fees:          decimal.NewFromFloat(2.50),
+		Taxes:         decimal.NewFromFloat(5.00),
+	})
+	if err != nil {
+		t.Fatalf("failed to write first report item: %v", err)
+	}
+
+	err = aw.Write(ctx, internal.ReportItem{
+		Symbol:        "GOOGL",
+		Nature:        internal.NatureG20,
+		BrokerCountry: 826, // United Kingdom
+		AssetCountry:  840, // United States
+		BuyValue:      decimal.NewFromFloat(200.00),
+		BuyTimestamp:  time.Date(2023, 3, 10, 0, 0, 0, 0, time.UTC),
+		SellValue:     decimal.NewFromFloat(225.50),
+		SellTimestamp: time.Date(2023, 9, 5, 0, 0, 0, 0, time.UTC),
+		Fees:          decimal.NewFromFloat(3.00),
+		Taxes:         decimal.NewFromFloat(7.50),
+	})
+	if err != nil {
+		t.Fatalf("failed to write second report item: %v", err)
+	}
+
+	// Create English localizer
+	localizer, err := NewLocalizer("en")
+	if err != nil {
+		t.Fatalf("failed to create localizer: %v", err)
+	}
+
+	// Create pretty printer with buffer
+	var buf bytes.Buffer
+	pp := NewPrettyPrinter(&buf, localizer)
+
+	// Render the table
+	pp.Render(aw)
+
+	// Get the output
+	got := buf.String()
+
+	// Expected output
+	want := `┌───┬────────────────────────────┬───────────────────────────────────┬───────────────────────────────────┬──────────────────────────────────────────────────────────┐
+│   │                            │            REALIZATION            │            ACQUISITION            │                                                          │
+│   │ SOURCE COUNTRY      │ CODE │ YEAR │ MONTH │ DAY │        VALUE │ YEAR │ MONTH │ DAY │        VALUE │ EXPENSES AND CH │ TAX PAID ABROAD │ COUNTER COUNTRY      │
+│   │                     │      │      │       │     │              │      │       │     │              │           ARGES │                 │                      │
+├───┼─────────────────────┼──────┼──────┼───────┼─────┼──────────────┼──────┼───────┼─────┼──────────────┼─────────────────┼─────────────────┼──────────────────────┤
+│ 1 │ 840 - United States │ G01  │ 2023 │ 6     │ 20  │     150.75 € │ 2023 │ 1     │ 15  │     100.50 € │          2.50 € │          5.00 € │ 826 - United Kingdom │
+│ 2 │ 840 - United States │ G20  │ 2023 │ 9     │ 5   │     225.50 € │ 2023 │ 3     │ 10  │     200.00 € │          3.00 € │          7.50 € │ 826 - United Kingdom │
+├───┼─────────────────────┴──────┴──────┴───────┴─────┼──────────────┼──────┴───────┴─────┼──────────────┼─────────────────┼─────────────────┼──────────────────────┤
+│   │                                             SUM │     376.25 € │                    │      300.5 € │           5.5 € │          12.5 € │                      │
+└───┴─────────────────────────────────────────────────┴──────────────┴────────────────────┴──────────────┴─────────────────┴─────────────────┴──────────────────────┘
+`
+
+	// Compare output
+	if got != want {
+		t.Errorf("PrettyPrinter.Render() output doesn't match expected.\n\nGot:\n%s\n\nWant:\n%s", got, want)
+	}
+}