Greg Pomerantz
bef3929f40
- Rewrite cursor_test.go to use the current GlyphLayout-based API instead of the deleted byteOffsetToLineCol function - Add guard for empty/missing layout slices in SetCursorFromPoint to prevent index-out-of-range panic on empty documents - Add missing Advance field to e2e test GlyphLayout initialization - Add cmd/pad/pad binary to .gitignore
92 lines
3.1 KiB
Go
92 lines
3.1 KiB
Go
package editor
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import (
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"testing"
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"pad/internal/ui"
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)
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// TestCursorPositioning_Basic verifies cursor positioning via GlyphLayout.
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func TestCursorPositioning_Basic(t *testing.T) {
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TheState = NewState()
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TheState.Editor.Buffer = "hello\nworld"
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// Two lines: "hello\n" (bytes 0-5) and "world" (bytes 6-10)
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// Line 0 glyphs at Y=70, Line 1 glyphs at Y=140
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TheState.Editor.GlyphLayout = ui.GlyphLayout{
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ByteOffsets: []int{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10},
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X: []ui.Dp{10, 20, 30, 40, 50, 10, 20, 30, 40, 50, 60},
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Y: []ui.Dp{70, 70, 70, 70, 70, 70, 140, 140, 140, 140, 140},
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Advance: []ui.Dp{10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10},
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}
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// Test tapping on first line near X=30 (glyph index 2, byteOffset 2)
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SetCursorFromPoint(25, 70)
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if TheState.Editor.CursorPosition < 0 || TheState.Editor.CursorPosition > len(TheState.Editor.Buffer) {
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t.Errorf("cursor position %d out of bounds after first tap", TheState.Editor.CursorPosition)
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}
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// Test tapping on second line
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SetCursorFromPoint(35, 140)
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if TheState.Editor.CursorPosition < 0 || TheState.Editor.CursorPosition > len(TheState.Editor.Buffer) {
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t.Errorf("cursor position %d out of bounds after second tap", TheState.Editor.CursorPosition)
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}
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}
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// TestCursorPositioning_EmptyDocument verifies cursor positioning handles empty documents.
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func TestCursorPositioning_EmptyDocument(t *testing.T) {
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TheState = NewState()
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TheState.Editor.Buffer = ""
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TheState.Editor.GlyphLayout = ui.GlyphLayout{}
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// Should not panic on empty layout
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SetCursorFromPoint(50, 50)
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if TheState.Editor.CursorPosition != 0 {
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t.Errorf("expected cursor at 0 for empty document, got %d", TheState.Editor.CursorPosition)
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}
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}
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// TestCursorPositioning_IncompleteLayout verifies cursor positioning handles missing layout slices.
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func TestCursorPositioning_IncompleteLayout(t *testing.T) {
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TheState = NewState()
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TheState.Editor.Buffer = "test"
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// GlyphLayout with ByteOffsets and X but no Advance (partial data)
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TheState.Editor.GlyphLayout = ui.GlyphLayout{
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ByteOffsets: []int{0, 1, 2, 3},
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X: []ui.Dp{10, 20, 30, 40},
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Y: []ui.Dp{70, 70, 70, 70},
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// Advance intentionally omitted
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}
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// Should not panic when Advance is missing
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SetCursorFromPoint(25, 70)
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}
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// TestHandleCursorMove_Bounds verifies cursor movement stays within buffer bounds.
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func TestHandleCursorMove_Bounds(t *testing.T) {
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TheState = NewState()
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TheState.Editor.Buffer = "hello"
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TheState.Editor.CursorPosition = 0
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// Move right 3 times
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HandleCursorMove(1)
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HandleCursorMove(1)
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HandleCursorMove(1)
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if TheState.Editor.CursorPosition != 3 {
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t.Errorf("expected cursor at 3, got %d", TheState.Editor.CursorPosition)
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}
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// Move right past end — should clamp to buffer length
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HandleCursorMove(10)
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if TheState.Editor.CursorPosition != len(TheState.Editor.Buffer) {
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t.Errorf("expected cursor at %d (end of buffer), got %d", len(TheState.Editor.Buffer), TheState.Editor.CursorPosition)
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}
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// Move left past start — should clamp to 0
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HandleCursorMove(-100)
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if TheState.Editor.CursorPosition != 0 {
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t.Errorf("expected cursor at 0, got %d", TheState.Editor.CursorPosition)
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}
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}
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