Check in codegen test expectations.

test/codegen/expect/sunflower/sunflower.js

Index: test/codegen/expect/sunflower/sunflower.js
diff --git a/test/codegen/expect/sunflower/sunflower.js b/test/codegen/expect/sunflower/sunflower.js
new file mode 100644
index 0000000000000000000000000000000000000000..c447b631a4a1e78fba241e251a4eb12a4fbee9fc
--- /dev/null
+++ b/test/codegen/expect/sunflower/sunflower.js
@@ -0,0 +1,132 @@
+dart_library.library('sunflower', null, /* Imports */[
+  'dart_sdk'
+], function load__sunflower(exports, dart_sdk) {
+  'use strict';
+  const core = dart_sdk.core;
+  const html = dart_sdk.html;
+  const math = dart_sdk.math;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const sunflower = Object.create(null);
+  const circle = Object.create(null);
+  const painter = Object.create(null);
+  let StringToElement = () => (StringToElement = dart.constFn(dart.definiteFunctionType(html.Element, [core.String])))();
+  let EventTovoid = () => (EventTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [html.Event])))();
+  let VoidTovoid = () => (VoidTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [])))();
+  sunflower.SEED_RADIUS = 2;
+  sunflower.SCALE_FACTOR = 4;
+  sunflower.MAX_D = 300;
+  sunflower.centerX = sunflower.MAX_D / 2;
+  sunflower.centerY = sunflower.centerX;
+  sunflower.querySelector = function(selector) {
+    return html.document[dartx.querySelector](selector);
+  };
+  dart.fn(sunflower.querySelector, StringToElement());
+  dart.defineLazy(sunflower, {
+    get canvas() {
+      return html.CanvasElement.as(sunflower.querySelector("#canvas"));
+    }
+  });
+  dart.defineLazy(sunflower, {
+    get context() {
+      return html.CanvasRenderingContext2D.as(sunflower.canvas[dartx.getContext]('2d'));
+    }
+  });
+  dart.defineLazy(sunflower, {
+    get slider() {
+      return html.InputElement.as(sunflower.querySelector("#slider"));
+    }
+  });
+  dart.defineLazy(sunflower, {
+    get notes() {
+      return sunflower.querySelector("#notes");
+    }
+  });
+  dart.defineLazy(sunflower, {
+    get PHI() {
+      return (dart.notNull(math.sqrt(5)) + 1) / 2;
+    }
+  });
+  sunflower.seeds = 0;
+  sunflower.main = function() {
+    sunflower.slider[dartx.addEventListener]('change', dart.fn(e => sunflower.draw(), EventTovoid()));
+    sunflower.draw();
+  };
+  dart.fn(sunflower.main, VoidTovoid());
+  sunflower.draw = function() {
+    sunflower.seeds = core.int.parse(sunflower.slider[dartx.value]);
+    sunflower.context[dartx.clearRect](0, 0, sunflower.MAX_D, sunflower.MAX_D);
+    for (let i = 0; i < dart.notNull(sunflower.seeds); i++) {
+      let theta = i * painter.TAU / dart.notNull(sunflower.PHI);
+      let r = dart.notNull(math.sqrt(i)) * sunflower.SCALE_FACTOR;
+      let x = sunflower.centerX + r * dart.notNull(math.cos(theta));
+      let y = sunflower.centerY - r * dart.notNull(math.sin(theta));
+      new sunflower.SunflowerSeed(x, y, sunflower.SEED_RADIUS).draw(sunflower.context);
+    }
+    sunflower.notes[dartx.text] = dart.str`${sunflower.seeds} seeds`;
+  };
+  dart.fn(sunflower.draw, VoidTovoid());
+  circle.Circle = class Circle extends core.Object {
+    new(x, y, radius) {
+      this.x = x;
+      this.y = y;
+      this.radius = radius;
+    }
+  };
+  dart.setSignature(circle.Circle, {
+    constructors: () => ({new: dart.definiteFunctionType(circle.Circle, [core.num, core.num, core.num])})
+  });
+  painter.CirclePainter = class CirclePainter extends core.Object {
+    new() {
+      this.color = painter.ORANGE;
+    }
+    draw(context) {
+      context[dartx.beginPath]();
+      context[dartx.lineWidth] = 2;
+      context[dartx.fillStyle] = this.color;
+      context[dartx.strokeStyle] = this.color;
+      context[dartx.arc](this.x, this.y, this.radius, 0, painter.TAU, false);
+      context[dartx.fill]();
+      context[dartx.closePath]();
+      context[dartx.stroke]();
+    }
+  };
+  painter.CirclePainter[dart.implements] = () => [circle.Circle];
+  dart.setSignature(painter.CirclePainter, {
+    methods: () => ({draw: dart.definiteFunctionType(dart.void, [html.CanvasRenderingContext2D])})
+  });
+  sunflower.SunflowerSeed = class SunflowerSeed extends dart.mixin(circle.Circle, painter.CirclePainter) {
+    new(x, y, radius, color) {
+      if (color === void 0) color = null;
+      super.new(x, y, radius);
+      if (color != null) this.color = color;
+    }
+  };
+  dart.setSignature(sunflower.SunflowerSeed, {
+    constructors: () => ({new: dart.definiteFunctionType(sunflower.SunflowerSeed, [core.num, core.num, core.num], [core.String])})
+  });
+  painter.ORANGE = "orange";
+  painter.RED = "red";
+  painter.BLUE = "blue";
+  painter.TAU = math.PI * 2;
+  painter.querySelector = function(selector) {
+    return html.document[dartx.querySelector](selector);
+  };
+  dart.fn(painter.querySelector, StringToElement());
+  dart.defineLazy(painter, {
+    get canvas() {
+      return html.CanvasElement.as(painter.querySelector("#canvas"));
+    }
+  });
+  dart.defineLazy(painter, {
+    get context() {
+      return html.CanvasRenderingContext2D.as(painter.canvas[dartx.getContext]('2d'));
+    }
+  });
+  // Exports:
+  exports.sunflower = sunflower;
+  exports.circle = circle;
+  exports.painter = painter;
+});
+
+//# sourceMappingURL=sunflower.js.map