Add tests for stroke + fill and fill + stroke

diff --git a/sparse_strips/vello_sparse_tests/snapshots/glyphs_filled_then_stroked.png b/sparse_strips/vello_sparse_tests/snapshots/glyphs_filled_then_stroked.png
new file mode 100644
index 0000000..1a82977
--- /dev/null
+++ b/sparse_strips/vello_sparse_tests/snapshots/glyphs_filled_then_stroked.png

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f9ca8a3f2d206c18b80afa1fce8ef9e0e6ee28e449a18baa680d02a022916937
+size 6098

diff --git a/sparse_strips/vello_sparse_tests/snapshots/glyphs_stroked_then_filled.png b/sparse_strips/vello_sparse_tests/snapshots/glyphs_stroked_then_filled.png
new file mode 100644
index 0000000..bfceb20
--- /dev/null
+++ b/sparse_strips/vello_sparse_tests/snapshots/glyphs_stroked_then_filled.png

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:688c2b64098483aef590957dd368b8da98d6c0c123ba2e3fd6162b8b340adfb7
+size 6069

diff --git a/sparse_strips/vello_sparse_tests/tests/glyph.rs b/sparse_strips/vello_sparse_tests/tests/glyph.rs
index 6390290..b1f366d 100644
--- a/sparse_strips/vello_sparse_tests/tests/glyph.rs
+++ b/sparse_strips/vello_sparse_tests/tests/glyph.rs

@@ -83,6 +83,52 @@
         .stroke_glyphs(glyphs.into_iter());
 }
 
+#[vello_test(width = 300, height = 120)]
+fn glyphs_stroked_then_filled(ctx: &mut impl Renderer) {
+    let font_size: f32 = 50_f32;
+    let (font, glyphs) = layout_glyphs_roboto("Hello, world!", font_size);
+
+    render_roboto_with_mode(
+        ctx,
+        &font,
+        font_size,
+        glyphs.iter().copied(),
+        Affine::translate((0., f64::from(font_size))),
+        DrawMode::Stroke,
+    );
+    render_roboto_with_mode(
+        ctx,
+        &font,
+        font_size,
+        glyphs.into_iter(),
+        Affine::translate((0., f64::from(font_size * 2.0))),
+        DrawMode::Fill,
+    );
+}
+
+#[vello_test(width = 300, height = 120)]
+fn glyphs_filled_then_stroked(ctx: &mut impl Renderer) {
+    let font_size: f32 = 50_f32;
+    let (font, glyphs) = layout_glyphs_roboto("Hello, world!", font_size);
+
+    render_roboto_with_mode(
+        ctx,
+        &font,
+        font_size,
+        glyphs.iter().copied(),
+        Affine::translate((0., f64::from(font_size))),
+        DrawMode::Fill,
+    );
+    render_roboto_with_mode(
+        ctx,
+        &font,
+        font_size,
+        glyphs.into_iter(),
+        Affine::translate((0., f64::from(font_size * 2.0))),
+        DrawMode::Stroke,
+    );
+}
+
 #[vello_test(width = 300, height = 70)]
 fn glyphs_skewed(ctx: &mut impl Renderer) {
     let font_size: f32 = 50_f32;
@@ -276,6 +322,32 @@
     Stroke,
 }
 
+fn render_roboto_with_mode(
+    ctx: &mut impl Renderer,
+    font: &FontData,
+    font_size: f32,
+    glyphs: impl Iterator<Item = Glyph>,
+    transform: Affine,
+    mode: DrawMode,
+) {
+    ctx.set_transform(transform);
+    ctx.set_paint(REBECCA_PURPLE);
+    ctx.set_stroke(Stroke {
+        width: 3.0,
+        ..Stroke::default()
+    });
+    let builder = ctx.glyph_run(font).font_size(font_size);
+
+    match mode {
+        DrawMode::Fill => {
+            builder.fill_glyphs(glyphs);
+        }
+        DrawMode::Stroke => {
+            builder.stroke_glyphs(glyphs);
+        }
+    }
+}
+
 #[vello_test(width = 250, height = 70, skip_hybrid, cpu_u8_tolerance = 1)]
 fn glyphs_colr_noto(ctx: &mut impl Renderer) {
     render_colr_noto_with_transform(ctx, Affine::translate((0., 50.)), DrawMode::Fill);