package main

import "testing"

func testDisplay(t *testing.T) *display {
	t.Helper()
	d := &display{}
	for _, spec := range []struct {
		dst  **textFace
		bold bool
		size float64
	}{
		{&d.huge, true, 40},
		{&d.big, true, 36},
		{&d.text, false, 22},
		{&d.textB, true, 22},
		{&d.small, false, 17},
	} {
		face, err := loadFace(spec.bold, spec.size)
		if err != nil {
			t.Fatal(err)
		}
		*spec.dst = face
	}
	return d
}

func TestPanelFitsScreen(t *testing.T) {
	d := testDisplay(t)
	if err := d.layout(600, 1024); err != nil {
		t.Fatal(err)
	}
	if d.cellW < 6 {
		t.Errorf("heat cells %dpx wide, want at least 6", d.cellW)
	}
	if end := d.cellsX + d.cellsW; end > d.resetX {
		t.Errorf("heat cells run to %d, past the reset column at %d", end, d.resetX)
	}
	if last := d.rowYs[len(d.rowYs)-1] + rowH; last > d.resetBtn.y {
		t.Errorf("rows end at %d, past the footer at %d", last, d.resetBtn.y)
	}
	t.Logf("cells %dpx wide, rows end at %d, footer at %d",
		d.cellW, d.axisY+d.small.lineH, d.resetBtn.y)
}