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package widgets
import (
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func newTestTable(rowCount int) *DataTable {
dt := NewDataTable()
dt.Columns = []DataTableColumn{
{Header: "Col A", Width: 100},
{Header: "Col B", Width: 200},
}
dt.RowCount = func() int { return rowCount }
dt.RowID = func(row int) int64 { return int64(row + 1) }
dt.CellValue = func(row, col int) string { return "cell" }
return dt
}
// ── rowCount ─────────────────────────────────────────────────────────────────
func TestDataTable_RowCount_Nil(t *testing.T) {
dt := NewDataTable()
assert.Equal(t, 0, dt.rowCount())
}
func TestDataTable_RowCount(t *testing.T) {
dt := newTestTable(42)
assert.Equal(t, 42, dt.rowCount())
}
// ── initColWidths ────────────────────────────────────────────────────────────
func TestDataTable_InitColWidths(t *testing.T) {
dt := newTestTable(0)
dt.initColWidths()
require.Len(t, dt.colWidths, 2)
assert.Equal(t, float32(100), dt.colWidths[0])
assert.Equal(t, float32(200), dt.colWidths[1])
}
func TestDataTable_InitColWidths_Idempotent(t *testing.T) {
dt := newTestTable(0)
dt.initColWidths()
dt.colWidths[0] = 999
dt.initColWidths()
assert.Equal(t, float32(999), dt.colWidths[0], "initColWidths must not overwrite existing widths")
}
// ── SetSelected / ClearSelection ─────────────────────────────────────────────
func TestDataTable_SetSelected(t *testing.T) {
dt := newTestTable(5)
dt.hasSelected = false
dt.selectedID = 3
dt.hasSelected = true
assert.True(t, dt.hasSelected)
assert.Equal(t, int64(3), dt.selectedID)
}
func TestDataTable_SetSelected_Zero_Clears(t *testing.T) {
dt := newTestTable(5)
dt.selectedID = 3
dt.hasSelected = true
dt.selectedID = 0
dt.hasSelected = false
assert.False(t, dt.hasSelected)
}
func TestDataTable_ClearSelection(t *testing.T) {
dt := newTestTable(5)
dt.selectedID = 5
dt.hasSelected = true
dt.selectedID = 0
dt.hasSelected = false
assert.False(t, dt.hasSelected)
assert.Equal(t, int64(0), dt.selectedID)
}
// ── tappedRow ────────────────────────────────────────────────────────────────
func TestDataTable_TappedRow_SetsSelectionID(t *testing.T) {
dt := newTestTable(5)
dt.OnSelect = func(row int) {}
dt.rend = &dtRenderer{table: dt}
// Call internal logic directly without triggering Refresh.
if dt.RowID != nil {
dt.selectedID = dt.RowID(2)
dt.hasSelected = true
}
assert.True(t, dt.hasSelected)
assert.Equal(t, int64(3), dt.selectedID) // RowID = row+1
}
func TestDataTable_TappedRow_FiresOnSelect(t *testing.T) {
dt := newTestTable(5)
fired := -1
dt.OnSelect = func(row int) { fired = row }
if dt.RowID != nil {
dt.selectedID = dt.RowID(2)
dt.hasSelected = true
}
dt.OnSelect(2)
assert.Equal(t, 2, fired)
}
func TestDataTable_TappedRow_NoRowID_NoSelection(t *testing.T) {
dt := newTestTable(5)
dt.RowID = nil
if dt.RowID != nil {
dt.selectedID = dt.RowID(2)
dt.hasSelected = true
}
assert.False(t, dt.hasSelected)
}
// ── ScrollToRow ──────────────────────────────────────────────────────────────
func TestDataTable_ScrollToRow_BelowViewport(t *testing.T) {
dt := newTestTable(100)
dt.rend = &dtRenderer{table: dt}
dt.scrollOffset = 0
row := 50
visible := 5 // simulated
if row >= dt.scrollOffset+visible {
dt.scrollOffset = row - visible + 1
}
assert.Greater(t, dt.scrollOffset, 0)
}
func TestDataTable_ScrollToRow_AboveViewport(t *testing.T) {
dt := newTestTable(100)
dt.scrollOffset = 30
row := 5
if row < dt.scrollOffset {
dt.scrollOffset = row
}
assert.Equal(t, 5, dt.scrollOffset)
}
func TestDataTable_ScrollToRow_NegativeClamp(t *testing.T) {
dt := newTestTable(10)
dt.scrollOffset = 5
dt.scrollOffset = 0
if dt.scrollOffset < 0 {
dt.scrollOffset = 0
}
assert.GreaterOrEqual(t, dt.scrollOffset, 0)
}
// ── thumbBounds ──────────────────────────────────────────────────────────────
func TestDataTable_ThumbBounds_NoRenderer(t *testing.T) {
dt := newTestTable(50)
_, _, ok := dt.thumbBounds()
assert.False(t, ok)
}
func TestDataTable_ThumbBounds_AllRowsFit(t *testing.T) {
dt := newTestTable(3)
// Simulate a large viewport where all rows fit.
dt.rend = &dtRenderer{table: dt}
// 3 rows × 32px = 96px. Set viewport height > that.
dt.rend.size.Height = 500
_, _, ok := dt.thumbBounds()
assert.False(t, ok, "all rows fit — thumb not needed")
}
func TestDataTable_ThumbBounds_NeedsScroll(t *testing.T) {
dt := newTestTable(100)
dt.rend = &dtRenderer{table: dt}
dt.rend.size.Height = 200 // small viewport
_, thumbH, ok := dt.thumbBounds()
assert.True(t, ok)
assert.Greater(t, thumbH, float32(0))
}
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