asciiart_test.gno

  1package asciiart
  2
  3import (
  4	"strings"
  5	"testing"
  6
  7	"gno.land/p/nt/avl/v0"
  8	"gno.land/p/nt/testutils/v0"
  9)
 10
 11func resetState() {
 12	gallery = avl.Tree{}
 13	nextID = 0
 14}
 15
 16func TestRenderDiamond(t *testing.T) {
 17	got := RenderDiamond(3)
 18	want := "  *\n ***\n*****\n ***\n  *"
 19	if got != want {
 20		t.Fatalf("RenderDiamond(3) =\n%s\nwant\n%s", got, want)
 21	}
 22}
 23
 24func TestRenderPyramid(t *testing.T) {
 25	got := RenderPyramid(3)
 26	want := "  *\n ***\n*****"
 27	if got != want {
 28		t.Fatalf("RenderPyramid(3) =\n%s\nwant\n%s", got, want)
 29	}
 30}
 31
 32func TestRenderSierpinski(t *testing.T) {
 33	got := RenderSierpinski(4)
 34	want := "####\n# # \n##  \n#   "
 35	if got != want {
 36		t.Fatalf("RenderSierpinski(4) =\n%s\nwant\n%s", got, want)
 37	}
 38}
 39
 40func TestRenderSierpinskiRejectsNonPowerOfTwo(t *testing.T) {
 41	defer func() {
 42		if r := recover(); r == nil {
 43			t.Fatal("expected panic for a non-power-of-two size")
 44		}
 45	}()
 46	RenderSierpinski(5)
 47}
 48
 49func TestRenderChecker(t *testing.T) {
 50	got := RenderChecker(3)
 51	want := "#.#\n.#.\n#.#"
 52	if got != want {
 53		t.Fatalf("RenderChecker(3) =\n%s\nwant\n%s", got, want)
 54	}
 55}
 56
 57func TestRenderPatternUnknown(t *testing.T) {
 58	defer func() {
 59		if r := recover(); r == nil {
 60			t.Fatal("expected panic for an unknown pattern")
 61		}
 62	}()
 63	renderPattern("spiral", 3)
 64}
 65
 66func TestPadID(t *testing.T) {
 67	if padID(1) != "000001" {
 68		t.Fatalf("padID(1) = %q, want 000001", padID(1))
 69	}
 70	if padID(42) != "000042" {
 71		t.Fatalf("padID(42) = %q, want 000042", padID(42))
 72	}
 73}
 74
 75// Crossing: Generate mutates realm state, so the test needs `cur realm`.
 76func TestGenerateAddsToGallery(cur realm, t *testing.T) {
 77	resetState()
 78	alice := testutils.TestAddress("alice")
 79	testing.SetRealm(testing.NewUserRealm(alice))
 80
 81	art := Generate(cross(cur), "checker", 3)
 82	if art != RenderChecker(3) {
 83		t.Fatal("Generate should return the rendered art")
 84	}
 85	if nextID != 1 {
 86		t.Fatalf("nextID = %d, want 1", nextID)
 87	}
 88
 89	// avl/v0's Get returns a single `any` (a miss is a nil interface), not the
 90	// value, ok pair a Go map yields — asciiart.gno:230 already does it this way.
 91	v := gallery.Get(padID(1))
 92	if v == nil {
 93		t.Fatal("expected piece #1 to exist in the gallery")
 94	}
 95	p := v.(*piece)
 96	if p.Pattern != "checker" || p.Size != 3 || p.Author != alice {
 97		t.Fatalf("unexpected piece: %+v", p)
 98	}
 99}
100
101func TestGenerateRejectsOutOfRangeSize(cur realm, t *testing.T) {
102	resetState()
103	alice := testutils.TestAddress("alice")
104	testing.SetRealm(testing.NewUserRealm(alice))
105
106	rec := revive(func() { Generate(cross(cur), "diamond", 0) })
107	if rec == nil {
108		t.Fatal("expected panic for size < 1")
109	}
110	rec = revive(func() { Generate(cross(cur), "diamond", maxSize+1) })
111	if rec == nil {
112		t.Fatal("expected panic for size > maxSize")
113	}
114}
115
116// Non-crossing: Render is a plain read.
117func TestRenderHomeEmptyGallery(t *testing.T) {
118	resetState()
119	out := Render("")
120	if !strings.Contains(out, "nothing generated yet") {
121		t.Fatal(`Render("") on an empty gallery should say so`)
122	}
123}
124
125func TestRenderPieceNotFound(t *testing.T) {
126	resetState()
127	out := Render("99")
128	if !strings.Contains(out, "No such piece") {
129		t.Fatal(`Render("99") on a missing piece should say so`)
130	}
131}