Add another double-tap test

packages/unit/test/gestures/double_tap_test.dart

@@ -3,8 +3,14 @@ import 'package:quiver/testing/async.dart';
 import 'package:test/test.dart';
 
 class TestGestureArenaMember extends GestureArenaMember {
-  void acceptGesture(Object key) {}
-  void rejectGesture(Object key) {}
+  void acceptGesture(Object key) {
+    accepted = true;
+  }
+  void rejectGesture(Object key) {
+    rejected = true;
+  }
+  bool accepted = false;
+  bool rejected = false;
 }
 
 void main() {
@@ -354,6 +360,7 @@ void main() {
     router.route(up1);
     expect(doubleTapRecognized, isFalse);
     entry.resolve(GestureDisposition.accepted);
+    expect(member.accepted, isTrue);
     expect(doubleTapRecognized, isFalse);
     GestureArena.instance.sweep(1);
     expect(doubleTapRecognized, isFalse);
@@ -395,6 +402,7 @@ void main() {
     expect(doubleTapRecognized, isFalse);
 
     entry.resolve(GestureDisposition.accepted);
+    expect(member.accepted, isTrue);
 
     tap.addPointer(down2);
     GestureArena.instance.close(2);
@@ -439,6 +447,7 @@ void main() {
     expect(doubleTapRecognized, isFalse);
 
     entry.resolve(GestureDisposition.accepted);
+    expect(member.accepted, isTrue);
 
     router.route(up2);
     expect(doubleTapRecognized, isFalse);
@@ -448,4 +457,37 @@ void main() {
     tap.dispose();
   });
 
+  test('Passive gesture should trigger on double tap cancel', () {
+    PointerRouter router = new PointerRouter();
+    DoubleTapGestureRecognizer tap = new DoubleTapGestureRecognizer(router: router);
+
+    bool doubleTapRecognized = false;
+    tap.onDoubleTap = () {
+      doubleTapRecognized = true;
+    };
+
+    new FakeAsync().run((FakeAsync async) {
+      tap.addPointer(down1);
+      TestGestureArenaMember member = new TestGestureArenaMember();
+      GestureArena.instance.add(1, member);
+      GestureArena.instance.close(1);
+      expect(doubleTapRecognized, isFalse);
+      router.route(down1);
+      expect(doubleTapRecognized, isFalse);
+
+      router.route(up1);
+      expect(doubleTapRecognized, isFalse);
+      GestureArena.instance.sweep(1);
+      expect(doubleTapRecognized, isFalse);
+
+      expect(member.accepted, isFalse);
+
+      async.elapse(new Duration(milliseconds: 5000));
+
+      expect(member.accepted, isTrue);
+    });
+
+    tap.dispose();
+  });
+
 }

packages/unit/test/gestures/lsq_solver_test_disabled.dart

+import 'package:flutter/gestures.dart';
+import 'package:test/test.dart';
+
+
+void main() {
+  void printFit(PolynomialFit fit) {
+    print("Confidence: " + fit.confidence.toString());
+    for (int i = 0; i < fit.coefficients.length; i++)
+      print(i.toString() + ": " + fit.coefficients[i].toString());
+  }
+
+  approx(double value, double expectation) {
+    const double eps = 1e-6;
+    return (value - expectation).abs() < eps;
+  }
+
+  test('Least-squares fit: linear polynomial to line', () {
+    List<double> x = [0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0];
+    List<double> y = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0];
+    List<double> w = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0];
+
+    LeastSquaresSolver solver = new LeastSquaresSolver(x, y, w);
+    PolynomialFit fit = solver.solve(1);
+
+    expect(fit.coefficients.length, 2);
+    expect(approx(fit.coefficients[0], 1.0), isTrue);
+    expect(approx(fit.coefficients[1], 0.0), isTrue);
+    expect(approx(fit.confidence, 1.0), isTrue);
+  });
+
+  test('Least-squares fit: linear polynomial to sloped line', () {
+    List<double> x = [0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0];
+    List<double> y = [1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0];
+    List<double> w = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0];
+
+    LeastSquaresSolver solver = new LeastSquaresSolver(x, y, w);
+    PolynomialFit fit = solver.solve(1);
+
+    expect(fit.coefficients.length, 2);
+    expect(approx(fit.coefficients[0], 1.0), isTrue);
+    expect(approx(fit.coefficients[1], 1.0), isTrue);
+    expect(approx(fit.confidence, 1.0), isTrue);
+  });
+
+  test('Least-squares fit: quadratic polynomial to line', () {
+    List<double> x = [0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0];
+    List<double> y = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0];
+    List<double> w = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0];
+
+    LeastSquaresSolver solver = new LeastSquaresSolver(x, y, w);
+    PolynomialFit fit = solver.solve(2);
+
+    expect(fit.coefficients.length, 3);
+    expect(approx(fit.coefficients[0], 1.0), isTrue);
+    expect(approx(fit.coefficients[1], 0.0), isTrue);
+    expect(approx(fit.coefficients[2], 0.0), isTrue);
+    expect(approx(fit.confidence, 1.0), isTrue);
+  });
+
+  test('Least-squares fit: quadratic polynomial to sloped line', () {
+    List<double> x = [0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0];
+    List<double> y = [1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0];
+    List<double> w = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0];
+
+    LeastSquaresSolver solver = new LeastSquaresSolver(x, y, w);
+    PolynomialFit fit = solver.solve(2);
+
+    expect(fit.coefficients.length, 3);
+    expect(approx(fit.coefficients[0], 1.0), isTrue);
+    expect(approx(fit.coefficients[1], 1.0), isTrue);
+    expect(approx(fit.coefficients[2], 0.0), isTrue);
+    expect(approx(fit.confidence, 1.0), isTrue);
+  });
+
+}