test: allow external_access_plan run on windows

.gitignore

@@ -64,6 +64,9 @@ datafusion/sqllogictests/test_files/tpch/data/*
 # Scratch temp dir for sqllogictests
 datafusion/sqllogictest/test_files/scratch*
 
+# temp file for core
+datafusion/core/*.parquet
+
 # rat
 filtered_rat.txt
 rat.txt

datafusion/core/tests/parquet/external_access_plan.rs

@@ -33,7 +33,8 @@ use datafusion_physical_plan::ExecutionPlan;
 use parquet::arrow::arrow_reader::{RowSelection, RowSelector};
 use parquet::arrow::ArrowWriter;
 use parquet::file::properties::WriterProperties;
-use std::sync::{Arc, OnceLock};
+use std::path::Path;
+use std::sync::Arc;
 use tempfile::NamedTempFile;
 
 #[tokio::test]
@@ -314,12 +315,19 @@ impl TestFull {
 
         let TestData {
             _temp_file: _,
-            schema,
-            file_name,
-            file_size,
+            ref schema,
+            ref file_name,
+            ref file_size,
         } = get_test_data();
 
-        let mut partitioned_file = PartitionedFile::new(file_name, *file_size);
+        let new_file_name = if cfg!(target_os = "windows") {
+            // Windows path separator is different from Unix
+            file_name.replace("\\", "/")
+        } else {
+            file_name.clone()
+        };
+
+        let mut partitioned_file = PartitionedFile::new(new_file_name, *file_size);
 
         // add the access plan, if any, as an extension
         if let Some(access_plan) = access_plan {
@@ -355,6 +363,8 @@ impl TestFull {
             pretty_format_batches(&results).unwrap()
         );
 
+        std::fs::remove_file(file_name).unwrap();
+
         Ok(MetricsFinder::find_metrics(plan.as_ref()).unwrap())
     }
 }
@@ -369,45 +379,41 @@ struct TestData {
     file_size: u64,
 }
 
-static TEST_DATA: OnceLock<TestData> = OnceLock::new();
-
 /// Return a parquet file with 2 row groups each with 5 rows
-fn get_test_data() -> &'static TestData {
-    TEST_DATA.get_or_init(|| {
-        let scenario = Scenario::UTF8;
-        let row_per_group = 5;
+fn get_test_data() -> TestData {
+    let scenario = Scenario::UTF8;
+    let row_per_group = 5;
 
-        let mut temp_file = tempfile::Builder::new()
-            .prefix("user_access_plan")
-            .suffix(".parquet")
-            .tempfile()
-            .expect("tempfile creation");
+    let mut temp_file = tempfile::Builder::new()
+        .prefix("user_access_plan")
+        .suffix(".parquet")
+        .tempfile_in(Path::new(""))
+        .expect("tempfile creation");
 
-        let props = WriterProperties::builder()
-            .set_max_row_group_size(row_per_group)
-            .build();
+    let props = WriterProperties::builder()
+        .set_max_row_group_size(row_per_group)
+        .build();
 
-        let batches = create_data_batch(scenario);
-        let schema = batches[0].schema();
+    let batches = create_data_batch(scenario);
+    let schema = batches[0].schema();
 
-        let mut writer =
-            ArrowWriter::try_new(&mut temp_file, schema.clone(), Some(props)).unwrap();
+    let mut writer =
+        ArrowWriter::try_new(&mut temp_file, schema.clone(), Some(props)).unwrap();
 
-        for batch in batches {
-            writer.write(&batch).expect("writing batch");
-        }
-        writer.close().unwrap();
+    for batch in batches {
+        writer.write(&batch).expect("writing batch");
+    }
+    writer.close().unwrap();
 
-        let file_name = temp_file.path().to_string_lossy().to_string();
-        let file_size = temp_file.path().metadata().unwrap().len();
+    let file_name = temp_file.path().to_string_lossy().to_string();
+    let file_size = temp_file.path().metadata().unwrap().len();
 
-        TestData {
-            _temp_file: temp_file,
-            schema,
-            file_name,
-            file_size,
-        }
-    })
+    TestData {
+        _temp_file: temp_file,
+        schema,
+        file_name,
+        file_size,
+    }
 }
 
 /// Return the total value of the specified metric name

datafusion/core/tests/parquet/mod.rs

@@ -43,8 +43,6 @@ use std::sync::Arc;
 use tempfile::NamedTempFile;
 
 mod custom_reader;
-// Don't run on windows as tempfiles don't seem to work the same
-#[cfg(not(target_os = "windows"))]
 mod external_access_plan;
 mod file_statistics;
 #[cfg(not(target_family = "windows"))]