feat: one-way map links, blocked paths on map, map grid startup validation, user colors for maps

1 files changed, 64 insertions, 0 deletions

diff --git a/internal/color/color_test.go b/internal/color/color_test.go
index c1f5e5b..bffc0d7 100644
--- a/internal/color/color_test.go
+++ b/internal/color/color_test.go
@@ -53,3 +53,67 @@ func TestWrapANSISplitsOnNewlines(t *testing.T) {
 		t.Errorf("WrapANSI newline handling = %q, want %q", got, want)
 	}
 }
+
+func TestParseHexIndex(t *testing.T) {
+	cases := []struct {
+		in   string
+		want int
+	}{
+		{"00", 0},
+		{"0F", 15},
+		{"0f", 15},
+		{"D0", 208},
+		{"FF", 255},
+		{"F", 15},
+	}
+	for _, c := range cases {
+		if got := Parse(c.in).Fg; got != c.want {
+			t.Errorf("Parse(%q).Fg = %d, want %d", c.in, got, c.want)
+		}
+	}
+}
+
+func TestParseHexRejectsInvalid(t *testing.T) {
+	for _, in := range []string{"ZZ", "100", "G1"} {
+		if got := Parse(in).Fg; got != -1 {
+			t.Errorf("Parse(%q).Fg = %d, want -1 (rejected)", in, got)
+		}
+	}
+}
+
+func TestParseHexBgAndGradient(t *testing.T) {
+	s := Parse("D0 bg:00 g:C4,52 bold")
+	if s.Fg != 208 {
+		t.Errorf("Fg = %d, want 208", s.Fg)
+	}
+	if s.Bg != 0 {
+		t.Errorf("Bg = %d, want 0", s.Bg)
+	}
+	if !s.Bold {
+		t.Error("Bold not set")
+	}
+	if len(s.Gradient) != 2 || s.Gradient[0] != 196 || s.Gradient[1] != 82 {
+		t.Errorf("Gradient = %v, want [196 82]", s.Gradient)
+	}
+}
+
+func TestAverage(t *testing.T) {
+	// black (0) and white (15) average to a mid grey.
+	mid := Average(Parse("00"), Parse("0F"))
+	if mid.Fg < 0 {
+		t.Fatalf("expected a foreground, got %d", mid.Fg)
+	}
+	r, g, b := Xterm256ToRGB(mid.Fg)
+	if r > 200 || r < 55 || g > 200 || g < 55 || b > 200 || b < 55 {
+		t.Errorf("midpoint of black/white not grey: rgb=%d,%d,%d (idx %d)", r, g, b, mid.Fg)
+	}
+
+	// one side colorless -> use the other.
+	if got := Average(NoColor(), Parse("D0")); got.Fg != 208 {
+		t.Errorf("Average(none, D0).Fg = %d, want 208", got.Fg)
+	}
+	// both colorless -> NoColor.
+	if got := Average(NoColor(), NoColor()); got.Fg != -1 {
+		t.Errorf("Average(none, none).Fg = %d, want -1", got.Fg)
+	}
+}