[GitHub] [spark] cchighman commented on a change in pull request #28841: [SPARK-31962][SQL] Provide modifiedAfter and modifiedBefore options when filtering from a batch-based file data source

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cchighman commented on a change in pull request #28841:
URL: https://github.com/apache/spark/pull/28841#discussion_r483940721



##########
File path: sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/PathFilterSuite.scala
##########
@@ -0,0 +1,553 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.sql.execution.datasources
+
+import java.io.File
+import java.time.{LocalDateTime, ZoneOffset}
+import java.time.format.DateTimeFormatter
+
+import scala.util.Random
+
+import org.apache.spark.sql.{AnalysisException, QueryTest, Row}
+import org.apache.spark.sql.catalyst.util.{stringToFile, DateTimeUtils}
+import org.apache.spark.sql.test.SharedSparkSession
+
+
+class PathFilterSuite extends QueryTest with SharedSparkSession {
+  import testImplicits._
+
+  def createSingleFile(dir: File): File = {
+    val file = new File(dir, "temp" + Random.nextInt(1000) + ".csv")
+    stringToFile(file, "text")
+  }
+
+  def setFileTime(time: LocalDateTime, file: File): Boolean = {
+    val sameTime = time.toEpochSecond(ZoneOffset.UTC)
+    file.setLastModified(sameTime * 1000)
+  }
+
+  def setPlusFileTime(time: LocalDateTime, file: File, interval: Long): Boolean = {
+    val sameTime = time.plusDays(interval).toEpochSecond(ZoneOffset.UTC)
+    file.setLastModified(sameTime * 1000)
+  }
+
+  def setMinusFileTime(time: LocalDateTime, file: File, interval: Long): Boolean = {
+    val sameTime = time.minusDays(interval).toEpochSecond(ZoneOffset.UTC)
+    file.setLastModified(sameTime * 1000)
+  }
+
+  def formatTime(time: LocalDateTime): String = {
+    time.format(DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss"))
+  }
+
+  test("SPARK-31962: when modifiedBefore specified" +
+      " and sharing same timestamp with file last modified time.") {
+    withTempDir { dir =>
+      val file = createSingleFile(dir)
+      val time = LocalDateTime.now(ZoneOffset.UTC)
+      setFileTime(time, file)
+      val formattedTime = formatTime(time)
+
+      val msg = intercept[AnalysisException] {
+        spark.read
+            .option("modifiedBefore", formattedTime)

Review comment:
       @maropu 
   I updated this source file after running the scalafmt maven task.  Attached is the output based on our current config.




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