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diff --git a/third_party/protobuf/3.4.0/java/core/src/test/java/com/google/protobuf/TextFormatParseLocationTest.java b/third_party/protobuf/3.4.0/java/core/src/test/java/com/google/protobuf/TextFormatParseLocationTest.java
new file mode 100644
index 0000000000..c42bfa6e71
--- /dev/null
+++ b/third_party/protobuf/3.4.0/java/core/src/test/java/com/google/protobuf/TextFormatParseLocationTest.java
@@ -0,0 +1,86 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package com.google.protobuf;
+
+import junit.framework.TestCase;
+
+/**
+ * Test @{link TextFormatParseLocation}.
+ */
+public class TextFormatParseLocationTest extends TestCase {
+
+  public void testCreateEmpty() {
+    TextFormatParseLocation location = TextFormatParseLocation.create(-1, -1);
+    assertEquals(TextFormatParseLocation.EMPTY, location);
+  }
+
+  public void testCreate() {
+    TextFormatParseLocation location = TextFormatParseLocation.create(2, 1);
+    assertEquals(2, location.getLine());
+    assertEquals(1, location.getColumn());
+  }
+
+  public void testCreateThrowsIllegalArgumentExceptionForInvalidIndex() {
+    try {
+      TextFormatParseLocation.create(-1, 0);
+      fail("Should throw IllegalArgumentException if line is less than 0");
+    } catch (IllegalArgumentException unused) {
+      // pass
+    }
+    try {
+      TextFormatParseLocation.create(0, -1);
+      fail("Should throw, column < 0");
+    } catch (IllegalArgumentException unused) {
+      // pass
+    }
+  }
+
+  public void testHashCode() {
+    TextFormatParseLocation loc0 = TextFormatParseLocation.create(2, 1);
+    TextFormatParseLocation loc1 = TextFormatParseLocation.create(2, 1);
+
+    assertEquals(loc0.hashCode(), loc1.hashCode());
+    assertEquals(
+        TextFormatParseLocation.EMPTY.hashCode(), TextFormatParseLocation.EMPTY.hashCode());
+  }
+
+  public void testEquals() {
+    TextFormatParseLocation loc0 = TextFormatParseLocation.create(2, 1);
+    TextFormatParseLocation loc1 = TextFormatParseLocation.create(1, 2);
+    TextFormatParseLocation loc2 = TextFormatParseLocation.create(2, 2);
+    TextFormatParseLocation loc3 = TextFormatParseLocation.create(2, 1);
+
+    assertEquals(loc0, loc3);
+    assertNotSame(loc0, loc1);
+    assertNotSame(loc0, loc2);
+    assertNotSame(loc1, loc2);
+  }
+}