wordle_test.gno

  1package wordle
  2
  3import (
  4	"strings"
  5	"testing"
  6)
  7
  8func TestScore(t *testing.T) {
  9	tests := []struct {
 10		name   string
 11		guess  string
 12		secret string
 13		want   string
 14	}{
 15		// all letters correct, correct spots.
 16		{"all correct", "crane", "crane", "🟩🟩🟩🟩🟩"},
 17		// s⬜ l🟨 a🟨 t🟨 e🟩  (secret t,a,b,l,e vs guess s,l,a,t,e)
 18		{"present wrong spot", "slate", "table", "⬜🟨🟨🟨🟩"},
 19		// no shared letters at all.
 20		{"all absent", "vivid", "champ", "⬜⬜⬜⬜⬜"},
 21	}
 22	for _, tt := range tests {
 23		got := score(tt.guess, tt.secret)
 24		if n := len([]rune(got)); n != wordLen {
 25			t.Errorf("%s: score(%q,%q) produced %d tiles, want %d", tt.name, tt.guess, tt.secret, n, wordLen)
 26		}
 27		if got != tt.want {
 28			t.Errorf("%s: score(%q,%q) = %q, want %q", tt.name, tt.guess, tt.secret, got, tt.want)
 29		}
 30	}
 31}
 32
 33func TestScoreDuplicateLetters(t *testing.T) {
 34	// guess "eerie" vs secret "there": guess e,e,r,i,e ; secret t,h,e,r,e
 35	// greens: pos? e-t no, e-h no, r-e no, i-r no, e-e yes(pos4) 🟩
 36	// secret remaining after greens: t,h,e,r (one e consumed at pos4)
 37	// pos0 e: e available -> 🟨, consume e (none left)
 38	// pos1 e: no e left -> ⬜
 39	// pos2 r: r available -> 🟨
 40	// pos3 i: not present -> ⬜
 41	got := score("eerie", "there")
 42	want := "🟨⬜🟨⬜🟩"
 43	if got != want {
 44		t.Errorf("eerie/there: got %q want %q", got, want)
 45	}
 46}
 47
 48func TestIsFiveLetters(t *testing.T) {
 49	tests := []struct {
 50		in   string
 51		want bool
 52	}{
 53		{"crane", true},
 54		{"CRANE", false}, // uppercase rejected (caller lowercases first)
 55		{"cran", false},  // too short
 56		{"cranes", false},// too long
 57		{"cr4ne", false}, // digit
 58		{"cr ne", false}, // space
 59		{"", false},
 60	}
 61	for _, tt := range tests {
 62		if got := isFiveLetters(tt.in); got != tt.want {
 63			t.Errorf("isFiveLetters(%q) = %v, want %v", tt.in, got, tt.want)
 64		}
 65	}
 66}
 67
 68func TestDayAndWordDeterminism(t *testing.T) {
 69	// Same day index must yield the same word; word must be a dictionary entry.
 70	d := dayIndex(blocksPerDay * 3)
 71	if d != 3 {
 72		t.Errorf("dayIndex: got %d want 3", d)
 73	}
 74	w1 := wordForDay(d)
 75	w2 := wordForDay(d)
 76	if w1 != w2 {
 77		t.Errorf("wordForDay not deterministic: %q vs %q", w1, w2)
 78	}
 79	found := false
 80	for _, w := range words {
 81		if w == w1 {
 82			found = true
 83			break
 84		}
 85	}
 86	if !found {
 87		t.Errorf("wordForDay returned %q which is not in the dictionary", w1)
 88	}
 89	if !isFiveLetters(w1) {
 90		t.Errorf("dictionary word %q is not 5 lowercase letters", w1)
 91	}
 92}
 93
 94func TestAllDictionaryWordsValid(t *testing.T) {
 95	for _, w := range words {
 96		if !isFiveLetters(w) {
 97			t.Errorf("dictionary word %q is not exactly 5 lowercase letters", w)
 98		}
 99	}
100}
101
102func TestRenderContainsRules(t *testing.T) {
103	out := Render("")
104	if !strings.Contains(out, "Daily Word Puzzle") {
105		t.Errorf("Render missing title; got:\n%s", out)
106	}
107	if !strings.Contains(out, "Rules") {
108		t.Errorf("Render missing rules section; got:\n%s", out)
109	}
110}