Add integers data set and test multiple rows with decay

Author: timgrein

x-pack/plugin/esql/qa/testFixtures/src/main/java/org/elasticsearch/xpack/esql/CsvTestsDataLoader.java

@@ -165,6 +165,7 @@ public class CsvTestsDataLoader {
     private static final TestDataset MV_TEXT = new TestDataset("mv_text");
     private static final TestDataset DENSE_VECTOR = new TestDataset("dense_vector");
     private static final TestDataset COLORS = new TestDataset("colors");
+    private static final TestDataset INTEGERS = new TestDataset("integers");
 
     public static final Map<String, TestDataset> CSV_DATASET_MAP = Map.ofEntries(
         Map.entry(EMPLOYEES.indexName, EMPLOYEES),
@@ -231,7 +232,8 @@ public class CsvTestsDataLoader {
         Map.entry(DENSE_VECTOR.indexName, DENSE_VECTOR),
         Map.entry(COLORS.indexName, COLORS),
         Map.entry(MULTI_COLUMN_JOINABLE.indexName, MULTI_COLUMN_JOINABLE),
-        Map.entry(MULTI_COLUMN_JOINABLE_LOOKUP.indexName, MULTI_COLUMN_JOINABLE_LOOKUP)
+        Map.entry(MULTI_COLUMN_JOINABLE_LOOKUP.indexName, MULTI_COLUMN_JOINABLE_LOOKUP),
+        Map.entry(INTEGERS.indexName, INTEGERS)
     );
 
     private static final EnrichConfig LANGUAGES_ENRICH = new EnrichConfig("languages_policy", "enrich-policy-languages.json");

x-pack/plugin/esql/qa/testFixtures/src/main/resources/data/integers.csv

@@ -0,0 +1,6 @@
+value:integer
+0
+10
+50
+100
+2500

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

@@ -90,6 +90,19 @@ decay_result:double
 1.0
 ;
 
+intMultipleRows
+FROM integers
+| EVAL decay_result = decay(value, 0, 10, {"offset": 5, "decay": 0.5, "type": "linear"})
+| KEEP decay_result;
+
+decay_result:double
+1.0
+0.75
+0.0
+0.0
+0.0
+;
+
 doubleLinear
 required_capability: decay_function
 

x-pack/plugin/esql/qa/testFixtures/src/main/resources/mapping-integers.json

@@ -0,0 +1,7 @@
+{
+  "properties": {
+    "value": {
+      "type": "integer"
+    }
+  }
+}