quotes_test.gno

  1package quotes
  2
  3import (
  4	"strings"
  5	"testing"
  6)
  7
  8// TestFeaturedIndexDeterministic verifies the rotating pick is a pure,
  9// deterministic function of (height, count): same inputs -> same index,
 10// always within [0, count).
 11func TestFeaturedIndexDeterministic(t *testing.T) {
 12	tests := []struct {
 13		name   string
 14		height int64
 15		count  int
 16		want   int
 17	}{
 18		{"zero height", 0, 4, 0},
 19		{"wraps at count", 4, 4, 0},
 20		{"mid range", 5, 4, 1},
 21		{"single quote always zero", 12345, 1, 0},
 22		{"empty list", 100, 0, -1},
 23		{"negative height normalized", -3, 4, 3},
 24		{"large height", 1_000_003, 3, 1},
 25	}
 26	for _, tt := range tests {
 27		t.Run(tt.name, func(t *testing.T) {
 28			got := featuredIndex(tt.height, tt.count)
 29			if got != tt.want {
 30				t.Errorf("featuredIndex(%d, %d) = %d, want %d",
 31					tt.height, tt.count, got, tt.want)
 32			}
 33			// For non-empty lists the index must be a valid slot.
 34			if tt.count > 0 && (got < 0 || got >= tt.count) {
 35				t.Errorf("featuredIndex(%d, %d) = %d, out of range [0,%d)",
 36					tt.height, tt.count, got, tt.count)
 37			}
 38		})
 39	}
 40
 41	// Determinism: repeated calls with identical inputs never diverge.
 42	for i := 0; i < 5; i++ {
 43		if featuredIndex(7, 4) != featuredIndex(7, 4) {
 44			t.Fatal("featuredIndex is not deterministic")
 45		}
 46	}
 47}
 48
 49// TestValidate covers the content rules enforced before a quote is stored.
 50func TestValidate(t *testing.T) {
 51	tests := []struct {
 52		name    string
 53		text    string
 54		wantErr error
 55	}{
 56		{"ok short", "hello world", nil},
 57		{"ok at limit", strings.Repeat("x", maxQuoteLen), nil},
 58		{"empty", "", errEmpty},
 59		{"too long", strings.Repeat("x", maxQuoteLen+1), errTooLong},
 60	}
 61	for _, tt := range tests {
 62		t.Run(tt.name, func(t *testing.T) {
 63			err := validate(tt.text)
 64			if err != tt.wantErr {
 65				t.Errorf("validate(%q) err = %v, want %v", tt.name, err, tt.wantErr)
 66			}
 67		})
 68	}
 69}
 70
 71// TestRenderSeeded checks that a fresh deploy (seeded board) renders the
 72// expected structure: title, a blockquote featured pick, and the full list
 73// containing every seeded quote.
 74func TestRenderSeeded(t *testing.T) {
 75	out := Render("")
 76
 77	if !strings.Contains(out, "# Quote of the Moment") {
 78		t.Error("missing title heading")
 79	}
 80	if !strings.Contains(out, "\n> ") {
 81		t.Error("featured quote is not rendered as a blockquote")
 82	}
 83	if !strings.Contains(out, "## All quotes (") {
 84		t.Error("missing full-list section")
 85	}
 86
 87	// Every seeded quote must appear in the listing.
 88	for _, q := range board {
 89		if !strings.Contains(out, q.text) {
 90			t.Errorf("rendered output missing seeded quote: %q", q.text)
 91		}
 92	}
 93
 94	// Seeded quotes have no author and should surface the house label.
 95	if !strings.Contains(out, "the board") {
 96		t.Error("seeded quotes should be attributed to \"the board\"")
 97	}
 98}
 99
100// TestSeededBoard confirms init populated the board and ids are sequential.
101func TestSeededBoard(t *testing.T) {
102	if len(board) < 3 {
103		t.Fatalf("expected at least 3 seeded quotes, got %d", len(board))
104	}
105	for i, q := range board {
106		if q.id != i {
107			t.Errorf("quote at position %d has id %d, want %d", i, q.id, i)
108		}
109	}
110}