package display

import "testing"

func TestStatusTemplateDrawsBlackCanvasWithLine(t *testing.T) {
	canvas := &fakeCanvas{width: 800, height: 600}

	NewStatusTemplate("Brak polaczenia WFB").Draw(canvas)

	clears, flushes := canvas.drawCounts()
	if clears != 1 || flushes != 1 {
		t.Fatalf("clears=%d flushes=%d want 1 and 1", clears, flushes)
	}
	lines := canvas.lines()
	if len(lines) != 1 || lines[0] != "Brak polaczenia WFB" {
		t.Fatalf("lines=%v want [Brak polaczenia WFB]", lines)
	}
}

func TestStatusTemplateDrawsEveryProvidedLine(t *testing.T) {
	canvas := &fakeCanvas{width: 800, height: 600}

	NewStatusTemplate("first", "second").Draw(canvas)

	lines := canvas.lines()
	if len(lines) != 2 || lines[0] != "first" || lines[1] != "second" {
		t.Fatalf("lines=%v want [first second]", lines)
	}
}