Merge google/walt

Merge from https://github.com/google/walt.git

Bug: 149721303
Bug: 149721109
Test: ./gradlew build -x :app:lint
Change-Id: I56e2f506782fbbe01e3bf2489fa3091226a2b5ca
Signed-off-by: Tai Kuo <taikuo@google.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/android/WALT/app/src/test/java/org/chromium/latency/walt/UtilsTest.java b/android/WALT/app/src/test/java/org/chromium/latency/walt/UtilsTest.java
index bf77e05..86513f4 100644
--- a/android/WALT/app/src/test/java/org/chromium/latency/walt/UtilsTest.java
+++ b/android/WALT/app/src/test/java/org/chromium/latency/walt/UtilsTest.java
@@ -16,9 +16,12 @@
 
 package org.chromium.latency.walt;
 
+import com.github.mikephil.charting.data.Entry;
+
 import org.junit.Test;
 
 import java.util.ArrayList;
+import java.util.List;
 import java.util.Random;
 
 import static java.lang.Double.NaN;
@@ -159,4 +162,31 @@ public class UtilsTest {
         }
         assertEquals(latency, Utils.findBestShift(laserTimes, touchTimes, touchY), 1e-6);
     }
+
+    @Test
+    public void testMeanEntries() {
+        List<Entry> entries = new ArrayList<>();
+        for (int i = 1; i <= 10; i++) {
+            entries.add(new Entry(i, i));
+        }
+        assertEquals(5.5, Utils.mean(entries), 1e-12);
+    }
+
+    @Test
+    public void testMinEntries() {
+        List<Entry> entries = new ArrayList<>();
+        for (int i = 1; i <= 10; i++) {
+            entries.add(new Entry(i, i));
+        }
+        assertEquals(1, Utils.min(entries), 1e-12);
+    }
+
+    @Test
+    public void testMaxEntries() {
+        List<Entry> entries = new ArrayList<>();
+        for (int i = 1; i <= 10; i++) {
+            entries.add(new Entry(i, i));
+        }
+        assertEquals(10, Utils.max(entries), 1e-12);
+    }
 }