[TeX] Added telemetry express utility static libandroid-u-beta-1-gpl

- to be used by AdServices

Bug: 271127104
Test: atest ExpressLogApisTests
Change-Id: I914d6ac88e5b4445c51c09109a79ff828ada3e9b
Merged-In: I914d6ac88e5b4445c51c09109a79ff828ada3e9b

1 files changed, 129 insertions, 0 deletions

diff --git a/javatests/com/android/modules/expresslog/UniformOptionsTest.java b/javatests/com/android/modules/expresslog/UniformOptionsTest.java
new file mode 100644
index 0000000..3cc03ec
--- /dev/null
+++ b/javatests/com/android/modules/expresslog/UniformOptionsTest.java
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2023 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.modules.expresslog;
+
+import androidx.test.filters.SmallTest;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+@RunWith(JUnit4.class)
+@SmallTest
+public class UniformOptionsTest {
+    static {
+        System.loadLibrary("expresslog_test_jni");
+    }
+
+    private static final String TAG = UniformOptionsTest.class.getSimpleName();
+
+    @Test
+    public void testGetBinsCount() {
+        Histogram.UniformOptions options1 = new Histogram.UniformOptions(1, 100, 1000);
+        assertEquals(3, options1.getBinsCount());
+
+        Histogram.UniformOptions options10 = new Histogram.UniformOptions(10, 100, 1000);
+        assertEquals(12, options10.getBinsCount());
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testConstructZeroBinsCount() {
+        new Histogram.UniformOptions(0, 100, 1000);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testConstructNegativeBinsCount() {
+        new Histogram.UniformOptions(-1, 100, 1000);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testConstructMaxValueLessThanMinValue() {
+        new Histogram.UniformOptions(10, 1000, 100);
+    }
+
+    @Test
+    public void testBinIndexForRangeEqual1() {
+        Histogram.UniformOptions options = new Histogram.UniformOptions(10, 1, 11);
+        for (int i = 0, bins = options.getBinsCount(); i < bins; i++) {
+            assertEquals(i, options.getBinForSample(i));
+        }
+    }
+
+    @Test
+    public void testBinIndexForRangeEqual2() {
+        Histogram.UniformOptions options = new Histogram.UniformOptions(10, 1, 21);
+        for (int i = 0, bins = options.getBinsCount(); i < bins; i++) {
+            assertEquals(i, options.getBinForSample(i * 2));
+            assertEquals(i, options.getBinForSample(i * 2 - 1));
+        }
+    }
+
+    @Test
+    public void testBinIndexForRangeEqual5() {
+        Histogram.UniformOptions options = new Histogram.UniformOptions(2, 0, 10);
+        assertEquals(4, options.getBinsCount());
+        for (int i = 0; i < 2; i++) {
+            for (int sample = 0; sample < 5; sample++) {
+                assertEquals(i + 1, options.getBinForSample(i * 5 + sample));
+            }
+        }
+    }
+
+    @Test
+    public void testBinIndexForRangeEqual10() {
+        Histogram.UniformOptions options = new Histogram.UniformOptions(10, 1, 101);
+        assertEquals(0, options.getBinForSample(0));
+        assertEquals(options.getBinsCount() - 2, options.getBinForSample(100));
+        assertEquals(options.getBinsCount() - 1, options.getBinForSample(101));
+
+        final float binSize = (101 - 1) / 10f;
+        for (int i = 1, bins = options.getBinsCount() - 1; i < bins; i++) {
+            assertEquals(i, options.getBinForSample(i * binSize));
+        }
+    }
+
+    @Test
+    public void testBinIndexForRangeEqual90() {
+        final int binCount = 10;
+        final int minValue = 100;
+        final int maxValue = 100000;
+
+        Histogram.UniformOptions options = new Histogram.UniformOptions(binCount, minValue,
+                maxValue);
+
+        // logging underflow sample
+        assertEquals(0, options.getBinForSample(minValue - 1));
+
+        // logging overflow sample
+        assertEquals(binCount + 1, options.getBinForSample(maxValue));
+        assertEquals(binCount + 1, options.getBinForSample(maxValue + 1));
+
+        // logging min edge sample
+        assertEquals(1, options.getBinForSample(minValue));
+
+        // logging max edge sample
+        assertEquals(binCount, options.getBinForSample(maxValue - 1));
+
+        // logging single valid sample per bin
+        final int binSize = (maxValue - minValue) / binCount;
+
+        for (int i = 0; i < binCount; i++) {
+            assertEquals(i + 1, options.getBinForSample(minValue + binSize * i));
+        }
+    }
+}