only run esql spec IT

Author: tteofili

x-pack/plugin/esql/qa/testFixtures/src/main/resources/score-function.csv-spec

@@ -109,6 +109,7 @@ book_no:keyword | author:text    | s1:double
 matchWithDisjunctionAndFiltersConjunction
 required_capability: match_function
 required_capability: full_text_functions_disjunctions
+required_capability: score_function
 
 from books
 | eval s1 = score((match(author, "Vonnegut") or match(author, "Guinane")) and year > 1997)

x-pack/plugin/esql/src/internalClusterTest/java/org/elasticsearch/xpack/esql/plugin/ScoreFunctionIT.java

@@ -12,6 +12,7 @@
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.common.util.CollectionUtils;
 import org.elasticsearch.plugins.Plugin;
+import org.elasticsearch.test.junit.annotations.TestLogging;
 import org.elasticsearch.xpack.esql.VerificationException;
 import org.elasticsearch.xpack.esql.action.AbstractEsqlIntegTestCase;
 import org.elasticsearch.xpack.kql.KqlPlugin;
@@ -23,14 +24,33 @@
 import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertAcked;
 import static org.hamcrest.CoreMatchers.containsString;
 
-//@TestLogging(value = "org.elasticsearch.xpack.esql:TRACE,org.elasticsearch.compute:TRACE", reason = "debug")
+@TestLogging(value = "org.elasticsearch.xpack.esql:TRACE,org.elasticsearch.compute:TRACE", reason = "debug")
 public class ScoreFunctionIT extends AbstractEsqlIntegTestCase {
 
     @Before
     public void setupIndex() {
         createAndPopulateIndex();
     }
 
+    public void testScoreSingleNoMetadata() {
+        var query = """
+            FROM test
+            | WHERE match(content, "fox") AND match(content, "brown")
+            | EVAL first_score = score(match(content, "fox"))
+            | KEEP id, first_score
+            | SORT id
+            """;
+
+        try (var resp = run(query)) {
+            assertColumnNames(resp.columns(), List.of("id", "first_score"));
+            assertColumnTypes(resp.columns(), List.of("integer", "double"));
+            assertValues(
+                resp.values(),
+                List.of(List.of(1, 1.156558871269226), List.of(6, 0.9114001989364624))
+            );
+        }
+    }
+
     public void testScoreDifferentWhereMatch() {
         var query = """
             FROM test METADATA _score

x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/CsvTests.java

@@ -276,6 +276,10 @@ public final void test() throws Throwable {
                 "can't use match in csv tests",
                 testCase.requiredCapabilities.contains(EsqlCapabilities.Cap.MATCH_OPERATOR_COLON.capabilityName())
             );
+            assumeFalse(
+                "can't use score function in csv tests",
+                testCase.requiredCapabilities.contains(EsqlCapabilities.Cap.SCORE_FUNCTION.capabilityName())
+            );
             assumeFalse(
                 "can't load metrics in csv tests",
                 testCase.requiredCapabilities.contains(EsqlCapabilities.Cap.METRICS_COMMAND.capabilityName())