From 7823e5a2eb55b7ca4828ad16d4b29a50dea6259f Mon Sep 17 00:00:00 2001
From: Mayya Sharipova <mayya.sharipova@elastic.co>
Date: Thu, 21 Oct 2021 17:25:53 -0400
Subject: [PATCH] Enhance testKnnVectorsFormat test (#79615)

Test the output of toString method as it is available now.

Relates to #79193
---
 .../xpack/vectors/mapper/DenseVectorFieldMapperTests.java     | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/x-pack/plugin/vectors/src/test/java/org/elasticsearch/xpack/vectors/mapper/DenseVectorFieldMapperTests.java b/x-pack/plugin/vectors/src/test/java/org/elasticsearch/xpack/vectors/mapper/DenseVectorFieldMapperTests.java
index ff80198eff6d9..74c160ee3f55f 100644
--- a/x-pack/plugin/vectors/src/test/java/org/elasticsearch/xpack/vectors/mapper/DenseVectorFieldMapperTests.java
+++ b/x-pack/plugin/vectors/src/test/java/org/elasticsearch/xpack/vectors/mapper/DenseVectorFieldMapperTests.java
@@ -384,6 +384,8 @@ public void testKnnVectorsFormat() throws IOException {
         assertThat(codec, instanceOf(PerFieldMapperCodec.class));
         KnnVectorsFormat knnVectorsFormat = ((PerFieldMapperCodec) codec).getKnnVectorsFormatForField("field");
         assertThat(knnVectorsFormat, instanceOf(Lucene90HnswVectorsFormat.class));
-        //TODO: add more assertions once LUCENE-10178 is implemented
+        String expectedString = "Lucene90HnswVectorsFormat(name = Lucene90HnswVectorsFormat, maxConn = " + m +
+            ", beamWidth=" + efConstruction + ")";
+        assertEquals(expectedString, knnVectorsFormat.toString());
     }
 }