Adds validation tests for several previously untested timestamp functions in the Velox backend

Author: Mariam-Almesfer

backends-velox/src/test/scala/org/apache/gluten/functions/DateFunctionsValidateSuite.scala

@@ -262,6 +262,12 @@ class DateFunctionsValidateSuite extends FunctionsValidateSuite {
     }
   }
 
+  test("timestamp_seconds") {
+    runQueryAndCompare("select timestamp_seconds(l_orderkey) from lineitem") {
+      checkGlutenPlan[ProjectExecTransformer]
+    }
+  }
+
   test("timestampadd") {
     withTempPath {
       path =>
@@ -341,6 +347,45 @@ class DateFunctionsValidateSuite extends FunctionsValidateSuite {
     }
   }
 
+  test("last_day") {
+    withTempPath {
+      path =>
+        Seq(
+          java.sql.Date.valueOf("2022-02-15"),
+          java.sql.Date.valueOf("2022-03-20"),
+          java.sql.Date.valueOf("2020-02-10")
+        )
+          .toDF("dt")
+          .write
+          .parquet(path.getCanonicalPath)
+
+        spark.read.parquet(path.getCanonicalPath).createOrReplaceTempView("view")
+
+        runQueryAndCompare("SELECT last_day(dt) FROM view") {
+          checkGlutenPlan[ProjectExecTransformer]
+        }
+    }
+  }
+
+  test("next_day") {
+    withTempPath {
+      path =>
+        Seq(
+          java.sql.Date.valueOf("2022-02-15"),
+          java.sql.Date.valueOf("2022-03-20")
+        )
+          .toDF("dt")
+          .write
+          .parquet(path.getCanonicalPath)
+
+        spark.read.parquet(path.getCanonicalPath).createOrReplaceTempView("view")
+
+        runQueryAndCompare("SELECT next_day(dt, 'Monday') FROM view") {
+          checkGlutenPlan[ProjectExecTransformer]
+        }
+    }
+  }
+
   test("trunc") {
     withTempPath {
       path =>
@@ -473,6 +518,40 @@ class DateFunctionsValidateSuite extends FunctionsValidateSuite {
     }
   }
 
+  test("to_unix_timestamp") {
+    withTempPath {
+      path =>
+        Seq(
+          (Timestamp.valueOf("2016-04-08 13:10:15"), "yyyy-MM-dd HH:mm:ss"),
+          (Timestamp.valueOf("2017-05-19 18:25:30"), "yyyy-MM-dd HH:mm:ss")
+        ).toDF("ts", "fmt").write.parquet(path.getCanonicalPath)
+
+        spark.read
+          .parquet(path.getCanonicalPath)
+          .createOrReplaceTempView("to_unix_timestamp_test")
+
+        runQueryAndCompare("SELECT to_unix_timestamp(ts, fmt) FROM to_unix_timestamp_test") {
+          checkGlutenPlan[ProjectExecTransformer]
+        }
+    }
+  }
+
+  test("from_unixtime") {
+    withTempPath {
+      path =>
+        Seq(
+          (1460118615L, "yyyy-MM-dd HH:mm:ss"),
+          (1495211130L, "MM/dd/yyyy HH:mm:ss")
+        ).toDF("unix_time", "fmt").write.parquet(path.getCanonicalPath)
+
+        spark.read.parquet(path.getCanonicalPath).createOrReplaceTempView("from_unixtime_test")
+
+        runQueryAndCompare("SELECT from_unixtime(unix_time, fmt) FROM from_unixtime_test") {
+          checkGlutenPlan[ProjectExecTransformer]
+        }
+    }
+  }
+
   test("months_between") {
     withTempPath {
       path =>
@@ -489,4 +568,5 @@ class DateFunctionsValidateSuite extends FunctionsValidateSuite {
         }
     }
   }
+
 }

backends-velox/src/test/scala/org/apache/gluten/functions/ScalarFunctionsValidateSuite.scala

@@ -226,6 +226,24 @@ abstract class ScalarFunctionsValidateSuite extends FunctionsValidateSuite {
       sql("INSERT INTO t1 VALUES(1, NOW())")
       runQueryAndCompare("SELECT c1, HOUR(c2) FROM t1 LIMIT 1")(df => checkFallbackOperators(df, 0))
     }
+
+    test("MINUTE") {
+      withTable("t1") {
+        sql("create table t1 (c1 int, c2 timestamp) USING PARQUET")
+        sql("INSERT INTO t1 VALUES(1, NOW())")
+        runQueryAndCompare("SELECT c1, MINUTE(c2) FROM t1 LIMIT 1")(
+          df => checkFallbackOperators(df, 0))
+      }
+    }
+
+    test("SECOND") {
+      withTable("t1") {
+        sql("create table t1 (c1 int, c2 timestamp) USING PARQUET")
+        sql("INSERT INTO t1 VALUES(1, NOW())")
+        runQueryAndCompare("SELECT c1, SECOND(c2) FROM t1 LIMIT 1")(
+          df => checkFallbackOperators(df, 0))
+      }
+    }
   }
 
   test("map extract - getmapvalue") {