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internal/formatter/table_test.go

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+package formatter
+
+import (
+	"bytes"
+	"strings"
+	"testing"
+	"time"
+
+	"royalroadupdates/internal/royalroad"
+)
+
+func TestPrintTableTruncation(t *testing.T) {
+	stories := []royalroad.Story{
+		{
+			Name:         "Short Name",
+			DateModified: time.Now(),
+		},
+		{
+			Name:         "This is a very long story name that should definitely be truncated if the column width is restricted",
+			DateModified: time.Now(),
+		},
+		{
+			Name:         "Unicode Story 🌟 Sparkle",
+			DateModified: time.Now(),
+		},
+	}
+
+	t.Run("Natural width (no terminal)", func(t *testing.T) {
+		var buf bytes.Buffer
+		PrintTable(&buf, stories)
+		out := buf.String()
+
+		expectedLongName := "This is a very long story name that should definitely be truncated if the column width is restricted"
+		if !strings.Contains(out, expectedLongName) {
+			t.Errorf("Expected output to contain full long name when not truncated, but it didn't. Output:\n%s", out)
+		}
+	})
+
+	t.Run("Check relative time alignment", func(t *testing.T) {
+		var buf bytes.Buffer
+		PrintTable(&buf, stories)
+		out := buf.String()
+
+		lines := strings.Split(out, "\n")
+		if len(lines) < 2 {
+			t.Fatalf("Expected at least 2 lines of output, got %d", len(lines))
+		}
+		separatorLine := lines[1]
+		parts := strings.Split(separatorLine, "  ")
+		if len(parts) < 2 {
+			t.Fatalf("Separator line does not contain expected gutter: %s", separatorLine)
+		}
+		updateDashes := parts[1]
+		if len(updateDashes) < len("Last Update") {
+			t.Errorf("Update column separator too short: %d < 11", len(updateDashes))
+		}
+	})
+}