fix: roulette table box drawing characters

1 files changed, 52 insertions, 5 deletions

diff --git a/internal/game/render_roulette_test.go b/internal/game/render_roulette_test.go
index 1dde5ad..c1065e5 100644
--- a/internal/game/render_roulette_test.go
+++ b/internal/game/render_roulette_test.go
@@ -74,7 +74,7 @@ func TestRouletteArtModes(t *testing.T) {
 					} else if !strings.Contains(string([]rune(rows[4])[:7]), "0") {
 						t.Fatal("zero not left of grid", layout)
 					}
-					for _, target := range []string{"column1", "column2", "column3", "dozen1", "dozen2", "dozen3", "red", "black", "odd", "even", "low", "high"} {
+					for _, target := range []string{"1to12", "13to24", "25to36", "row1", "row2", "row3", "red", "black", "odd", "even", "low", "high"} {
 						if !strings.Contains(layout, target) {
 							t.Fatal("missing bet", target)
 						}
@@ -86,10 +86,9 @@ func TestRouletteArtModes(t *testing.T) {
 						}
 					}
 					if mode != "none" {
-						wantGreen := 1
-						if double {
-							wantGreen = 2
-						}
+						// The whole 0/00 lane is green: blank cells above and below
+						// the zeros fill the rectangle.
+						wantGreen := 3
 						if got := strings.Count(layoutArt, color.BgCode(mode, 2)); got != wantGreen {
 							t.Fatalf("green cells on board = %d, want %d", got, wantGreen)
 						}
@@ -135,6 +134,54 @@ func TestRouletteArtModes(t *testing.T) {
 	}
 }
 
+// TestRouletteLayoutConnections guards the box-drawing joints: the dozen-row
+// boxes must connect to the numbered grid above and be closed under, the
+// row-bet cells must be boxed on the right, and the bottom rule must tee under
+// each outside-bet divider.
+func TestRouletteLayoutConnections(t *testing.T) {
+	for _, double := range []bool{false, true} {
+		art := plainRoulette(renderRouletteLayout(double, "xterm256", true))
+		rows := strings.Split(art, "\n")
+		// rows[7] is the numbered grid's bottom edge, directly above the dozen
+		// labels. The dozen boundaries and the grid/row-lane joint cross; the
+		// row-bet lane closes with a bottom-right corner.
+		gridBottom := []rune(rows[7])
+		for _, col := range []int{6, 26, 46, 66} {
+			if gridBottom[col] != '┼' {
+				t.Fatalf("double=%v: grid bottom col %d = %q, want ┼:\n%s", double, col, gridBottom[col], art)
+			}
+		}
+		if gridBottom[73] != '┘' {
+			t.Fatalf("double=%v: grid bottom row-lane corner = %q, want ┘:\n%s", double, gridBottom[73], art)
+		}
+		// The row-bet lane is boxed: its separators cross at the grid edge and
+		// close on the right.
+		for _, idx := range []int{3, 5} {
+			sep := []rune(rows[idx])
+			if sep[66] != '┼' || sep[73] != '┤' {
+				t.Fatalf("double=%v: row lane separator %q lacks box joints:\n%s", double, rows[idx], art)
+			}
+		}
+		// rows[9] is the dozen boxes' bottom edge: tees point down where the
+		// even-money dividers sit and crosses pass the dozen dividers through.
+		dozenBottom := []rune(rows[9])
+		wantDozen := map[int]rune{6: '├', 16: '┬', 26: '┼', 36: '┬', 46: '┼', 56: '┬', 66: '┤'}
+		for col, want := range wantDozen {
+			if dozenBottom[col] != want {
+				t.Fatalf("double=%v: dozen bottom col %d = %q, want %q:\n%s", double, col, dozenBottom[col], want, art)
+			}
+		}
+		// The last line is the table's bottom rule; it tees upward under each
+		// outside-bet divider.
+		bottom := []rune(rows[len(rows)-1])
+		for _, col := range []int{16, 26, 36, 46, 56} {
+			if bottom[col] != '┴' {
+				t.Fatalf("double=%v: table bottom col %d = %q, want ┴:\n%s", double, col, bottom[col], art)
+			}
+		}
+	}
+}
+
 func TestRouletteResultSizesAndNeighbors(t *testing.T) {
 	for _, unicode := range []bool{false, true} {
 		for _, size := range []int{1, 5, 7, 9} {