The Garage SDKs, in the open

garage_auth, garage_entitlements, garage_iap and garage_ui, moved out of
Garage-Services and Metro-Map-Maker into one public repo. MIT, one readme,
docs under docs/.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013F4NWNvYcdeSgqbWMT1VQ7

garage_ui/test/density_gap_scale_test.dart

@@ -0,0 +1,43 @@
+import "package:flutter_test/flutter_test.dart";
+import "package:garage_ui/theme/theme_data.dart";
+
+// The gap scale is derived from controlGap, and the claim that makes that the
+// right base is that two tokens which were authored by hand long before the
+// scale existed land exactly on steps of it. If someone retunes controlGap,
+// containerGap or containerPadding and that stops being true, the base unit
+// has drifted and the scale is lying about where it comes from.
+void main() {
+  for (final density in const [Density(), Density.normal()]) {
+    final name = density.control.name;
+
+    test("$name: gapMd is containerGap, gapXl is containerPadding", () {
+      expect(density.gapMd, density.containerGap);
+      expect(density.gapXl, density.containerPadding);
+    });
+
+    test("$name: the scale climbs and stays on whole pixels", () {
+      final steps = [
+        density.gapXxs,
+        density.gapXs,
+        density.gapSm,
+        density.gapMd,
+        density.gapLg,
+        density.gapXl,
+        density.gapXxl,
+      ];
+      for (var i = 1; i < steps.length; i++) {
+        expect(steps[i], greaterThan(steps[i - 1]),
+            reason: "step $i should be bigger than the one before it");
+      }
+      for (final s in steps) {
+        expect(s, s.roundToDouble(), reason: "$s is not a whole pixel");
+      }
+    });
+  }
+
+  test("compact lands on the sizes the style guide observed in real use", () {
+    const d = Density();
+    expect([d.gapXxs, d.gapXs, d.gapSm, d.gapMd, d.gapLg, d.gapXl, d.gapXxl],
+        [2.0, 4.0, 6.0, 8.0, 12.0, 16.0, 24.0]);
+  });
+}