LogServletTest: cover author and committer log filters

Gitiles already supports filtering the log by author and committer
through query parameters.

Add servlet coverage for this existing behavior before building more
log search support on top of it.

Issue: 376381593
Change-Id: I83aec3e5066c0591e49641228d69c285401382a4

javatests/com/google/gitiles/LogServletTest.java

diff --git a/javatests/com/google/gitiles/LogServletTest.java b/javatests/com/google/gitiles/LogServletTest.java
index 7d75849..cc0d619 100644
--- a/javatests/com/google/gitiles/LogServletTest.java
+++ b/javatests/com/google/gitiles/LogServletTest.java
@@ -26,6 +26,7 @@
 import org.eclipse.jgit.internal.storage.dfs.DfsGarbageCollector;
 import org.eclipse.jgit.lib.ConfigConstants;
 import org.eclipse.jgit.lib.NullProgressMonitor;
+import org.eclipse.jgit.lib.PersonIdent;
 import org.eclipse.jgit.revwalk.RevCommit;
 import org.eclipse.jgit.revwalk.RevWalk;
 import org.junit.Test;
@@ -125,6 +126,37 @@
     verifyJsonCommit(response.log.get(1), c1);
   }
 
+  @Test
+  public void authorFilterLog() throws Exception {
+    PersonIdent matchingAuthor = new PersonIdent("Matching Author", "matching.author@example.com");
+    PersonIdent otherAuthor = new PersonIdent("Other Author", "other.author@example.com");
+
+    RevCommit c1 =
+        repo.branch("master").commit().author(matchingAuthor).add("foo", "one").create();
+    repo.branch("master").commit().author(otherAuthor).add("foo", "two").create();
+
+    Log response =
+        buildJson(LOG, "/repo/+log/master", "author=" + matchingAuthor.getEmailAddress());
+    assertThat(response.log).hasSize(1);
+    verifyJsonCommit(response.log.get(0), c1);
+  }
+
+  @Test
+  public void committerFilterLog() throws Exception {
+    PersonIdent matchingCommitter =
+        new PersonIdent("Matching Committer", "matching-committer@example.com");
+    PersonIdent otherCommitter = new PersonIdent("Other Committer", "other-committer@example.com");
+
+    RevCommit c1 =
+        repo.branch("master").commit().committer(matchingCommitter).add("foo", "one").create();
+    repo.branch("master").commit().committer(otherCommitter).add("foo", "two").create();
+
+    Log response =
+        buildJson(LOG, "/repo/+log/master", "committer=" + matchingCommitter.getEmailAddress());
+    assertThat(response.log).hasSize(1);
+    verifyJsonCommit(response.log.get(0), c1);
+  }
+
   private void verifyJsonCommit(Commit jsonCommit, RevCommit commit) throws Exception {
     repo.getRevWalk().parseBody(commit);
     GitilesAccess access = new TestGitilesAccess(repo.getRepository()).forRequest(null);