Move fbjni tests into fbjni directory (#2)

Summary:
Pull Request resolved: facebookincubator/fbjni#2

Want these to be included in Open Source fbjni.

Reviewed By: passy

Differential Revision: D17139151

fbshipit-source-id: 18d549fa4cbcc6860e9804abe2b8acdeb405d082

deps/fbjni/BUCK

@@ -59,7 +59,7 @@ profilo_oss_xplat_cxx_library(
 profilo_oss_android_library(
     name = "fbjni-java",
     srcs = glob([
-        "**/*.java",
+        "java/**/*.java",
     ]),
     visibility = [
         "PUBLIC",

deps/fbjni/test/AndroidManifest.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.facebook">
+</manifest>

deps/fbjni/test/BaseFBJniTests.java

@@ -0,0 +1,19 @@
+// Copyright 2004-present Facebook. All Rights Reserved.
+
+package com.facebook.jni;
+
+import com.facebook.soloader.SoLoader;
+import org.junit.BeforeClass;
+import org.junit.Rule;
+import org.junit.rules.ExpectedException;
+
+public class BaseFBJniTests {
+  @Rule public ExpectedException thrown = ExpectedException.none();
+
+  @BeforeClass
+  public static void setup() {
+    // Explicitly load fbjni to ensure that its JNI_OnLoad is run.
+    SoLoader.loadLibrary("fbjni");
+    SoLoader.loadLibrary("fbjni-tests");
+  }
+}

deps/fbjni/test/ByteBufferTests.java

@@ -0,0 +1,66 @@
+// Copyright 2004-present Facebook. All Rights Reserved.
+
+package com.facebook.jni;
+
+import static org.fest.assertions.api.Assertions.assertThat;
+
+import java.nio.Buffer;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.FloatBuffer;
+import org.junit.Test;
+
+public class ByteBufferTests extends BaseFBJniTests {
+  @Test
+  public void testDirectByteBuffer() {
+    assertThat(nativeTestDirectByteBuffer()).isTrue();
+  }
+
+  public static native boolean nativeTestDirectByteBuffer();
+
+  @Test
+  public void testEmptyDirectByteBuffer() {
+    assertThat(nativeTestEmptyDirectByteBuffer()).isTrue();
+  }
+
+  public static native boolean nativeTestEmptyDirectByteBuffer();
+
+  @Test
+  public void testRewindBuffer() {
+    assertThat(nativeTestRewindBuffer()).isTrue();
+  }
+
+  public native boolean nativeTestRewindBuffer();
+
+  @Test
+  public void testAllocateDirect() {
+    ByteBuffer buffer = nativeAllocateDirect(5);
+    assertThat(buffer.isDirect()).isTrue();
+    assertThat(buffer.capacity()).isEqualTo(5);
+  }
+
+  public native ByteBuffer nativeAllocateDirect(int size);
+
+  // called from native
+  public static void writeBytes(ByteBuffer dest, byte a, byte b, byte c, byte d) {
+    dest.put(a).put(b).put(c).put(d);
+  }
+
+  @Test
+  public void testFloatBuffer() {
+    final int BUFFER_COUNT = 5;
+    final int FLOAT_SIZE = 4;
+    FloatBuffer buffer =
+        ByteBuffer.allocateDirect(BUFFER_COUNT * FLOAT_SIZE)
+            .order(ByteOrder.nativeOrder())
+            .asFloatBuffer();
+    buffer.put(1f);
+    buffer.put(2f);
+    buffer.put(2.5f);
+    buffer.put(2.75f);
+    buffer.put(3f);
+    assertThat(nativeTestFloatBuffer(buffer)).isTrue();
+  }
+
+  public native boolean nativeTestFloatBuffer(Buffer buffer);
+}