original

[gb-231r1-is01/GB_2.3_IS01.git] / sdk / monkeyrunner / test / com / android / monkeyrunner / adb / LinearInterpolatorTest.java

diff --git a/sdk/monkeyrunner/test/com/android/monkeyrunner/adb/LinearInterpolatorTest.java b/sdk/monkeyrunner/test/com/android/monkeyrunner/adb/LinearInterpolatorTest.java
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+++ b/sdk/monkeyrunner/test/com/android/monkeyrunner/adb/LinearInterpolatorTest.java
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+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.monkeyrunner.adb;
+
+import com.google.common.collect.Lists;
+
+import com.android.monkeyrunner.adb.LinearInterpolator.Point;
+
+import junit.framework.TestCase;
+
+import java.util.List;
+
+/**
+ * Unit tests for the LinerInterpolator class.S
+ */
+public class LinearInterpolatorTest extends TestCase {
+    private static class Collector implements LinearInterpolator.Callback {
+        private final List<LinearInterpolator.Point> points = Lists.newArrayList();
+
+        public List<LinearInterpolator.Point> getPoints() {
+            return points;
+        }
+
+        public void end(Point input) {
+            points.add(input);
+        }
+
+        public void start(Point input) {
+            points.add(input);
+        }
+
+        public void step(Point input) {
+            points.add(input);
+        }
+    }
+
+    List<Integer> STEP_POINTS = Lists.newArrayList(0, 100, 200, 300, 400, 500, 600, 700, 800, 900,
+            1000);
+    List<Integer> REVERSE_STEP_POINTS = Lists.newArrayList(1000, 900, 800, 700, 600, 500, 400, 300,
+            200, 100, 0);
+
+    public void testLerpRight() {
+        LinearInterpolator lerp = new LinearInterpolator(10);
+        Collector collector = new Collector();
+        lerp.interpolate(new LinearInterpolator.Point(0, 100),
+                new LinearInterpolator.Point(1000, 100),
+                collector);
+
+        List<LinearInterpolator.Point> points = collector.getPoints();
+        assertEquals(11, points.size());
+        for (int x = 0; x < points.size(); x++) {
+            assertEquals(new Point(STEP_POINTS.get(x), 100), points.get(x));
+        }
+    }
+
+    public void testLerpLeft() {
+        LinearInterpolator lerp = new LinearInterpolator(10);
+        Collector collector = new Collector();
+        lerp.interpolate(new LinearInterpolator.Point(1000, 100),
+                new LinearInterpolator.Point(0, 100),
+                collector);
+
+        List<LinearInterpolator.Point> points = collector.getPoints();
+        assertEquals(11, points.size());
+        for (int x = 0; x < points.size(); x++) {
+            assertEquals(new Point(REVERSE_STEP_POINTS.get(x), 100), points.get(x));
+        }
+    }
+
+    public void testLerpUp() {
+        LinearInterpolator lerp = new LinearInterpolator(10);
+        Collector collector = new Collector();
+        lerp.interpolate(new LinearInterpolator.Point(100, 1000),
+                new LinearInterpolator.Point(100, 0),
+                collector);
+
+        List<LinearInterpolator.Point> points = collector.getPoints();
+        assertEquals(11, points.size());
+        for (int x = 0; x < points.size(); x++) {
+            assertEquals(new Point(100, REVERSE_STEP_POINTS.get(x)), points.get(x));
+        }
+    }
+
+    public void testLerpDown() {
+        LinearInterpolator lerp = new LinearInterpolator(10);
+        Collector collector = new Collector();
+        lerp.interpolate(new LinearInterpolator.Point(100, 0),
+                new LinearInterpolator.Point(100, 1000),
+                collector);
+
+        List<LinearInterpolator.Point> points = collector.getPoints();
+        assertEquals(11, points.size());
+        for (int x = 0; x < points.size(); x++) {
+            assertEquals(new Point(100, STEP_POINTS.get(x)), points.get(x));
+        }
+    }
+
+    public void testLerpNW() {
+        LinearInterpolator lerp = new LinearInterpolator(10);
+        Collector collector = new Collector();
+        lerp.interpolate(new LinearInterpolator.Point(0, 0),
+                new LinearInterpolator.Point(1000, 1000),
+                collector);
+
+        List<LinearInterpolator.Point> points = collector.getPoints();
+        assertEquals(11, points.size());
+        for (int x = 0; x < points.size(); x++) {
+            assertEquals(new Point(STEP_POINTS.get(x), STEP_POINTS.get(x)), points.get(x));
+        }
+    }
+
+    public void testLerpNE() {
+        LinearInterpolator lerp = new LinearInterpolator(10);
+        Collector collector = new Collector();
+        lerp.interpolate(new LinearInterpolator.Point(1000, 1000),
+                new LinearInterpolator.Point(0, 0),
+                collector);
+
+        List<LinearInterpolator.Point> points = collector.getPoints();
+        assertEquals(11, points.size());
+        for (int x = 0; x < points.size(); x++) {
+            assertEquals(new Point(REVERSE_STEP_POINTS.get(x), REVERSE_STEP_POINTS.get(x)), points.get(x));
+        }
+    }
+}