Upstream charmbracelet/lipgloss state of the touched files before 1a8841c478

whitespace_test.go

@@ -0,0 +1,52 @@
+package lipgloss
+
+import (
+	"testing"
+	"time"
+)
+
+func TestWhitespaceRenderWithTab(t *testing.T) {
+	// This test verifies that rendering whitespace with tab characters
+	// doesn't cause an infinite loop (issue #108)
+	done := make(chan bool, 1)
+
+	go func() {
+		ws := newWhitespace(WithWhitespaceChars("\t"))
+		_ = ws.render(10)
+		done <- true
+	}()
+
+	select {
+	case <-done:
+		// Success - render completed
+	case <-time.After(2 * time.Second):
+		t.Fatal("whitespace.render() with tab character caused infinite loop")
+	}
+}
+
+func TestWhitespaceRenderWithZeroWidthChar(t *testing.T) {
+	// Test with zero-width joiner (another zero-width character)
+	done := make(chan bool, 1)
+
+	go func() {
+		ws := newWhitespace(WithWhitespaceChars("\u200d")) // zero-width joiner
+		_ = ws.render(5)
+		done <- true
+	}()
+
+	select {
+	case <-done:
+		// Success
+	case <-time.After(2 * time.Second):
+		t.Fatal("whitespace.render() with zero-width character caused infinite loop")
+	}
+}
+
+func TestWhitespaceRenderNormal(t *testing.T) {
+	// Verify normal behavior still works
+	ws := newWhitespace(WithWhitespaceChars("*"))
+	result := ws.render(5)
+	if len(result) != 5 {
+		t.Errorf("expected 5 characters, got %d", len(result))
+	}
+}