@@ -0,0 +1,649 @@
+package com.google.cloud.opentelemetry.trace;%0A%0Aimport com.google.devtools.cloudtrace.v2.AttributeValue;%0Aimport static org.junit.Assert.assertNotNull;%0Aimport org.junit.runner.RunWith;%0Aimport org.junit.runners.JUnit4;%0Aimport java.util.Map;%0Aimport java.util.HashMap;%0Aimport org.junit.Test;%0A%0A@RunWith(JUnit4.class)%0A%0Apublic class TraceExporterTest %7B%0A%0A  private final String PROJECT_ID = %22project%22;%0A  private final Map%3CString, AttributeValue%3E FIXED_ATTRIBUTES = new HashMap%3C%3E();%0A%0A  @Test%0A  public void exporterConstructorTest() %7B%0A    final TraceExporter exporter = new TraceExporter(PROJECT_ID, null, FIXED_ATTRIBUTES);%0A    assertNotNull(exporter);%0A  %7D%0A%7D%0A

add TraceExporter ctor test to test junit dependency