An empty column shows its theme's empty_col: white in the acme theme, as acme paints it

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 19 insertions, 0 deletions

diff --git a/src/pardes.zig b/src/pardes.zig
index bad512a9..e3f4bb60 100644
--- a/src/pardes.zig
+++ b/src/pardes.zig
@@ -1317,6 +1317,25 @@ test "Placement pardes brings back the old rules, and says so in Config" {
     try std.testing.expectEqual(config.Runtime.Placement.acme, p.settings.placement);
 }
 
+test "an empty column shows its theme's empty_col under its tag: acme's white, else the border" {
+    const p = try Pardes.init(std.testing.allocator, .{ .tty_only = true, .cols = 120, .rows = 20 });
+    defer p.deinit();
+    p.newColumn(0);
+    tagline.exitHeader(p);
+    inline for (.{ "acme", "dark" }) |name| {
+        try std.testing.expect(p.executeBuiltinLine(0, "Theme " ++ name));
+        p.chrome_animation.displayed = colors.ChromeTheme.fromTheme(p.theme());
+        p.sync();
+        var arena: std.heap.ArenaAllocator = .init(std.testing.allocator);
+        defer arena.deinit();
+        const s = try p.render(arena.allocator());
+        const cell = s.at(p.col_x[1] + 3, p.screen_h - 2);
+        const want = p.chromeTheme().empty_col;
+        try std.testing.expectEqual(want, cell.style.bg.rgb);
+        if (std.mem.eql(u8, name, "acme")) try std.testing.expectEqual([3]u8{ 0xff, 0xff, 0xff }, want) else try std.testing.expectEqual(p.chromeTheme().border, want);
+    }
+}
+
 test "dragging a column's only pane to another leaves that column in place, empty" {
     const p = try Pardes.init(std.testing.allocator, .{ .tty_only = true, .cols = 160, .rows = 32 });
     defer p.deinit();