LogicalPlan testing

Signed-off-by: James Duong <[email protected]>

Author: jduo

core/src/main/java/org/opensearch/sql/planner/logical/LogicalPlanDSL.java

@@ -15,6 +15,7 @@
 import org.opensearch.sql.ast.expression.Literal;
 import org.opensearch.sql.ast.tree.RareTopN.CommandType;
 import org.opensearch.sql.ast.tree.Sort.SortOption;
+import org.opensearch.sql.ast.tree.Trendline;
 import org.opensearch.sql.expression.Expression;
 import org.opensearch.sql.expression.LiteralExpression;
 import org.opensearch.sql.expression.NamedExpression;
@@ -130,6 +131,11 @@ public static LogicalPlan rareTopN(
     return new LogicalRareTopN(input, commandType, noOfResults, Arrays.asList(fields), groupByList);
   }
 
+  public static LogicalTrendline trendline(
+      LogicalPlan input, Trendline.TrendlineComputation... computations) {
+    return new LogicalTrendline(input, Arrays.asList(computations));
+  }
+
   @SafeVarargs
   public LogicalPlan values(List<LiteralExpression>... values) {
     return new LogicalValues(Arrays.asList(values));

core/src/test/java/org/opensearch/sql/analysis/AnalyzerTest.java

@@ -18,6 +18,7 @@
 import static org.opensearch.sql.ast.dsl.AstDSL.argument;
 import static org.opensearch.sql.ast.dsl.AstDSL.booleanLiteral;
 import static org.opensearch.sql.ast.dsl.AstDSL.compare;
+import static org.opensearch.sql.ast.dsl.AstDSL.computation;
 import static org.opensearch.sql.ast.dsl.AstDSL.field;
 import static org.opensearch.sql.ast.dsl.AstDSL.filter;
 import static org.opensearch.sql.ast.dsl.AstDSL.filteredAggregate;
@@ -1437,6 +1438,19 @@ public void kmeanns_relation() {
         new Kmeans(AstDSL.relation("schema"), argumentMap));
   }
 
+  @Test
+  public void trendline() {
+    assertAnalyzeEqual(
+        LogicalPlanDSL.trendline(
+            LogicalPlanDSL.relation("schema", table),
+            computation(5, field("float_value"), "test_field_alias", "sma"),
+            computation(1, field("double_value"), "test_field_alias_2", "sma")),
+        AstDSL.trendline(
+            AstDSL.relation("schema"),
+            computation(5, field("float_value"), "test_field_alias", "sma"),
+            computation(1, field("double_value"), "test_field_alias_2", "sma")));
+  }
+
   @Test
   public void ad_batchRCF_relation() {
     Map<String, Literal> argumentMap =

core/src/test/java/org/opensearch/sql/planner/logical/LogicalPlanNodeVisitorTest.java

@@ -25,6 +25,7 @@
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.Arguments;
 import org.junit.jupiter.params.provider.MethodSource;
+import org.opensearch.sql.ast.dsl.AstDSL;
 import org.opensearch.sql.ast.tree.RareTopN.CommandType;
 import org.opensearch.sql.ast.tree.Sort.SortOption;
 import org.opensearch.sql.data.model.ExprValueUtils;
@@ -141,6 +142,12 @@ public TableWriteOperator build(PhysicalPlan child) {
 
     LogicalCloseCursor closeCursor = new LogicalCloseCursor(cursor);
 
+    LogicalTrendline trendline =
+        new LogicalTrendline(
+            relation,
+            Collections.singletonList(
+                AstDSL.computation(1, AstDSL.field("testField"), "dummy", "sma")));
+
     return Stream.of(
             relation,
             tableScanBuilder,
@@ -163,7 +170,8 @@ public TableWriteOperator build(PhysicalPlan child) {
             paginate,
             nested,
             cursor,
-            closeCursor)
+            closeCursor,
+            trendline)
         .map(Arguments::of);
   }
 

ppl/src/test/java/org/opensearch/sql/ppl/parser/AstBuilderTest.java

@@ -670,7 +670,7 @@ public void testTrendline() {
         trendline(
             relation("t"),
             computation(5, field("test_field"), "test_field_alias", "sma"),
-            computation(1, field("test_field)2"), "test_field_alias_2", "sma")));
+            computation(1, field("test_field_2"), "test_field_alias_2", "sma")));
   }
 
   @Test