Function TestTypingIntoChipInteriorKeepsContent

internal/tui/prompt_test.go:518–537

TestTypingIntoChipInteriorKeepsContent: typing a rune while the cursor sits inside a chip label, when two chips share an identical label, must not split the label and cross-map the survivor to the wrong paste. Update snaps out of the chip before delegating the rune to the textarea.

(t *testing.T)

// the label and cross-map the survivor to the wrong paste. Update snaps out of
// the chip before delegating the rune to the textarea.
func TestTypingIntoChipInteriorKeepsContent(t *testing.T) {
	p := newChippablePrompt()
	n := pasteChipMinLines + 4
	a := strings.Repeat("AAAA\n", n-1) + "Aend" // n lines
	b := strings.Repeat("BBBB\n", n-1) + "Bend" // n lines -> identical label
	p, _ = p.Update(pasteKey(a))
	p, _ = p.Update(pasteKey(b))
	if len(p.spans) != 2 {
		t.Fatalf("setup: expected 2 chips, got %d", len(p.spans))
	}
	p.setCursorRuneOffset(p.spans[0].start + 3) // strictly inside the first label
	p, _ = p.Update(tea.KeyMsg{Type: tea.KeyRunes, Runes: []rune("Z")})
	v := p.Value()
	if !strings.Contains(v, "Aend") {
		t.Fatalf("paste A content lost/cross-mapped: %q", v)
	}
	if !strings.Contains(v, "Bend") {
		t.Fatalf("paste B content lost/cross-mapped: %q", v)
	}
}