1 files changed, 86 insertions, 0 deletions
diff --git a/internal/game/map_test.go b/internal/game/map_test.go
index a50c2c2..adba595 100644
--- a/internal/game/map_test.go
+++ b/internal/game/map_test.go
@@ -92,3 +92,89 @@ func TestWrapText(t *testing.T) {
 		}
 	}
 }
+
+func TestBuildFullMap(t *testing.T) {
+	g := &Game{
+		World:    world.New("../../data"),
+		MapWidth: 70,
+	}
+
+	tests := []struct {
+		name   string
+		roomID int
+		width  int
+		height int
+	}{
+		{"room 1 30x20", 1, 30, 20},
+		{"room 1 20x10", 1, 20, 10},
+		{"room 25 30x20", 25, 30, 20},
+		{"min size 5x5", 1, 5, 5},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			lines := buildFullMap(g, tt.roomID, tt.width, tt.height)
+			if len(lines) != tt.height {
+				t.Errorf("expected %d lines, got %d", tt.height, len(lines))
+			}
+			for i, line := range lines {
+				if len([]rune(line)) != tt.width {
+					t.Errorf("line %d: expected %d runes, got %d in %q", i, tt.width, len([]rune(line)), line)
+				}
+			}
+			t.Logf("Room %d %dx%d map:\n%s", tt.roomID, tt.width, tt.height, strings.Join(lines, "\n"))
+		})
+	}
+}
+
+func TestStripBlankRows(t *testing.T) {
+	input := []string{"  ", "hello", "", "  world  ", "   "}
+	want := []string{"hello", "  world  "}
+	got := stripBlankRows(input)
+	if len(got) != len(want) {
+		t.Fatalf("expected %d lines, got %d", len(want), len(got))
+	}
+	for i := range want {
+		if got[i] != want[i] {
+			t.Errorf("line %d: want %q, got %q", i, want[i], got[i])
+		}
+	}
+}
+
+func TestLeftTrimCommon(t *testing.T) {
+	input := []string{"    hello", "    world", "  ", "  foo"}
+	got := leftTrimCommon(input)
+	// min leading spaces across non-blank lines: "    hello"=4, "    world"=4, "  foo"=2 → min=2
+	// trim 2 from all lines
+	if got[0] != "  hello" {
+		t.Errorf("line 0: want %q, got %q", "  hello", got[0])
+	}
+	if got[1] != "  world" {
+		t.Errorf("line 1: want %q, got %q", "  world", got[1])
+	}
+	if got[2] != "" {
+		t.Errorf("line 2: want %q, got %q", "", got[2])
+	}
+	if got[3] != "foo" {
+		t.Errorf("line 3: want %q, got %q", "foo", got[3])
+	}
+}
+
+func TestLeftTrimCommonEmpty(t *testing.T) {
+	input := []string{"   ", "", "   "}
+	got := leftTrimCommon(input)
+	if len(got) != 3 {
+		t.Fatalf("expected 3 lines, got %d", len(got))
+	}
+}
+
+func TestLeftTrimCommonZero(t *testing.T) {
+	input := []string{"hello", "world"}
+	got := leftTrimCommon(input)
+	if got[0] != "hello" {
+		t.Errorf("line 0: want %q, got %q", "hello", got[0])
+	}
+	if got[1] != "world" {
+		t.Errorf("line 1: want %q, got %q", "world", got[1])
+	}
+}