⚡️ (pagetop): Mejora uso de Props, Grid y HttpRequest

tests/component_grid_layout.rs

@@ -0,0 +1,57 @@
+use pagetop::prelude::*;
+
+// Las pistas de columna y de fila se guardan aparte para que `Grid` sea pequeño; esta prueba
+// avisa si algo vuelve a inflarlo.
+#[pagetop::test]
+async fn grid_stays_small() {
+    assert!(
+        std::mem::size_of::<Grid>() <= 1024,
+        "Grid ocupa {} bytes",
+        std::mem::size_of::<Grid>()
+    );
+}
+
+#[pagetop::test]
+async fn getters_return_the_default_until_tracks_are_set() {
+    let grid = Grid::new();
+    assert_eq!(grid.columns(), Responsive::default());
+    assert_eq!(grid.rows(), Responsive::default());
+
+    let tracks = grid::Tracks::repeat(3, grid::AxisTrack::Fraction(1.0));
+    let grid = grid.with_columns(tracks);
+    assert_eq!(grid.columns(), Responsive::default().set(tracks));
+    // Las filas siguen sin definir.
+    assert_eq!(grid.rows(), Responsive::default());
+}
+
+// Un clon comparte las pistas hasta que se modifica; entonces cada uno tiene las suyas.
+#[pagetop::test]
+async fn a_clone_does_not_share_later_changes() {
+    let three = grid::Tracks::repeat(3, grid::AxisTrack::Fraction(1.0));
+    let two = grid::Tracks::repeat(2, grid::AxisTrack::Fraction(1.0));
+    let original = Grid::new().with_columns(three);
+    let copy = original.clone().with_columns(two).with_rows(two);
+
+    assert_eq!(original.columns(), Responsive::default().set(three));
+    assert_eq!(original.rows(), Responsive::default());
+    assert_eq!(copy.columns(), Responsive::default().set(two));
+    assert_eq!(copy.rows(), Responsive::default().set(two));
+}
+
+#[pagetop::test]
+async fn columns_and_rows_by_breakpoint_are_kept() {
+    let one = grid::Tracks::repeat(1, grid::AxisTrack::Fraction(1.0));
+    let four = grid::Tracks::repeat(4, grid::AxisTrack::Fraction(1.0));
+    let grid = Grid::new()
+        .with_columns(one)
+        .with_columns_at(Breakpoint::Lg, four)
+        .with_rows_at(Breakpoint::Md, one);
+    assert_eq!(
+        grid.columns(),
+        Responsive::default().set(one).set_at(Breakpoint::Lg, four)
+    );
+    assert_eq!(
+        grid.rows(),
+        Responsive::default().set_at(Breakpoint::Md, one)
+    );
+}