Fix common tests to support patterns at end of string in useragent. (firebase#2700)

Old tests expected a whitespace between elements, but didn't account for the case when it's at the end of the string.

Author: rlazo

firebase-common/src/test/java/com/google/firebase/platforminfo/FirebasePlatformLoggingTest.java

@@ -23,6 +23,7 @@
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 import com.google.firebase.FirebaseOptions;
+import java.util.regex.Pattern;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.robolectric.annotation.Config;
@@ -79,7 +80,7 @@ public void test_watch_atNotHighEnoughApiLevel() {
  app -> {
  UserAgentPublisher ua = app.get(UserAgentPublisher.class);
 
- assertThat(ua.getUserAgent()).contains("android-platform/ ");
+ assertThat(ua.getUserAgent()).containsMatch(Pattern.compile("android-platform/($|\\s)"));
  });
  }
 
@@ -110,7 +111,7 @@ public void test_auto_atNotHighEnoughApiLevel() {
  app -> {
  UserAgentPublisher ua = app.get(UserAgentPublisher.class);
 
- assertThat(ua.getUserAgent()).contains("android-platform/ ");
+ assertThat(ua.getUserAgent()).containsMatch(Pattern.compile("android-platform/($|\\s)"));
  });
  }
 
@@ -141,7 +142,7 @@ public void test_embedded_atNotHighEnoughApiLevel() {
  app -> {
  UserAgentPublisher ua = app.get(UserAgentPublisher.class);
 
- assertThat(ua.getUserAgent()).contains("android-platform/ ");
+ assertThat(ua.getUserAgent()).containsMatch(Pattern.compile("android-platform/($|\\s)"));
  });
  }
 
@@ -153,7 +154,7 @@ public void test_installerPackage_withNoInstallerSet() {
  app -> {
  UserAgentPublisher ua = app.get(UserAgentPublisher.class);
 
- assertThat(ua.getUserAgent()).contains("android-installer/ ");
+ assertThat(ua.getUserAgent()).containsMatch(Pattern.compile("android-installer/($|\\s)"));
  });
  }