From bd11f8e70aaa1157abe628cc698dad373a5a79cc Mon Sep 17 00:00:00 2001
From: Oussama Saoudi <oussama.saoudi@databricks.com>
Date: Tue, 17 Dec 2024 16:11:25 -0800
Subject: [PATCH 1/6] Add simple tests

---
 kernel/tests/cdf.rs                        |  94 +++++++++++++++++++++
 kernel/tests/data/cdf-table-simple.tar.zst | Bin 0 -> 3204 bytes
 2 files changed, 94 insertions(+)
 create mode 100644 kernel/tests/data/cdf-table-simple.tar.zst

diff --git a/kernel/tests/cdf.rs b/kernel/tests/cdf.rs
index 2be5324fc..657a384e6 100644
--- a/kernel/tests/cdf.rs
+++ b/kernel/tests/cdf.rs
@@ -229,3 +229,97 @@ fn cdf_with_cdc_and_dvs() -> Result<(), Box<dyn error::Error>> {
     assert_batches_sorted_eq!(expected, &batches);
     Ok(())
 }
+
+#[test]
+fn test_simple_cdf_version_ranges() -> DeltaResult<()> {
+    let batches = read_cdf_for_table("cdf-table-simple", 0, 0)?;
+    let mut expected = vec![
+        "+----+--------------+-----------------+",
+        "| id | _change_type | _commit_version |",
+        "+----+--------------+-----------------+",
+        "| 0  | insert       | 0               |",
+        "| 1  | insert       | 0               |",
+        "| 2  | insert       | 0               |",
+        "| 3  | insert       | 0               |",
+        "| 4  | insert       | 0               |",
+        "| 5  | insert       | 0               |",
+        "| 6  | insert       | 0               |",
+        "| 7  | insert       | 0               |",
+        "| 8  | insert       | 0               |",
+        "| 9  | insert       | 0               |",
+        "+----+--------------+-----------------+",
+    ];
+    sort_lines!(expected);
+    assert_batches_sorted_eq!(expected, &batches);
+
+    let batches = read_cdf_for_table("cdf-table-simple", 1, 1)?;
+    let mut expected = vec![
+        "+----+--------------+-----------------+",
+        "| id | _change_type | _commit_version |",
+        "+----+--------------+-----------------+",
+        "| 0  | delete       | 1               |",
+        "| 1  | delete       | 1               |",
+        "| 2  | delete       | 1               |",
+        "| 3  | delete       | 1               |",
+        "| 4  | delete       | 1               |",
+        "| 5  | delete       | 1               |",
+        "| 6  | delete       | 1               |",
+        "| 7  | delete       | 1               |",
+        "| 8  | delete       | 1               |",
+        "| 9  | delete       | 1               |",
+        "+----+--------------+-----------------+",
+    ];
+    sort_lines!(expected);
+    assert_batches_sorted_eq!(expected, &batches);
+
+    let batches = read_cdf_for_table("cdf-table-simple", 2, 2)?;
+    let mut expected = vec![
+        "+----+--------------+-----------------+",
+        "| id | _change_type | _commit_version |",
+        "+----+--------------+-----------------+",
+        "| 20 | insert       | 2               |",
+        "| 21 | insert       | 2               |",
+        "| 22 | insert       | 2               |",
+        "| 23 | insert       | 2               |",
+        "| 24 | insert       | 2               |",
+        "+----+--------------+-----------------+",
+    ];
+    sort_lines!(expected);
+    assert_batches_sorted_eq!(expected, &batches);
+
+    let batches = read_cdf_for_table("cdf-table-simple", 0, 2)?;
+    let mut expected = vec![
+        "+----+--------------+-----------------+",
+        "| id | _change_type | _commit_version |",
+        "+----+--------------+-----------------+",
+        "| 0  | insert       | 0               |",
+        "| 1  | insert       | 0               |",
+        "| 2  | insert       | 0               |",
+        "| 3  | insert       | 0               |",
+        "| 4  | insert       | 0               |",
+        "| 5  | insert       | 0               |",
+        "| 6  | insert       | 0               |",
+        "| 7  | insert       | 0               |",
+        "| 8  | insert       | 0               |",
+        "| 9  | insert       | 0               |",
+        "| 0  | delete       | 1               |",
+        "| 1  | delete       | 1               |",
+        "| 2  | delete       | 1               |",
+        "| 3  | delete       | 1               |",
+        "| 4  | delete       | 1               |",
+        "| 5  | delete       | 1               |",
+        "| 6  | delete       | 1               |",
+        "| 7  | delete       | 1               |",
+        "| 8  | delete       | 1               |",
+        "| 9  | delete       | 1               |",
+        "| 20 | insert       | 2               |",
+        "| 21 | insert       | 2               |",
+        "| 22 | insert       | 2               |",
+        "| 23 | insert       | 2               |",
+        "| 24 | insert       | 2               |",
+        "+----+--------------+-----------------+",
+    ];
+    sort_lines!(expected);
+    assert_batches_sorted_eq!(expected, &batches);
+    Ok(())
+}
diff --git a/kernel/tests/data/cdf-table-simple.tar.zst b/kernel/tests/data/cdf-table-simple.tar.zst
new file mode 100644
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From 38f7b265db7de211c97a80f6e570a91561966399 Mon Sep 17 00:00:00 2001
From: Oussama Saoudi <oussama.saoudi@databricks.com>
Date: Wed, 18 Dec 2024 15:05:18 -0800
Subject: [PATCH 2/6] Add delta-spark cdf tests

---
 kernel/src/table_changes/mod.rs               |  16 +-
 kernel/tests/cdf.rs                           | 146 ++++++++++++++++--
 kernel/tests/common/mod.rs                    |   2 +
 .../cdf-table-backtick-column-names.tar.zst   | Bin 0 -> 3136 bytes
 .../tests/data/cdf-table-data-change.tar.zst  | Bin 0 -> 2668 bytes
 .../tests/data/cdf-table-partitioned.tar.zst  | Bin 0 -> 4648 bytes
 .../tests/data/cdf-table-update-ops.tar.zst   | Bin 0 -> 3456 bytes
 kernel/tests/data/oussama_cdf.tar.zst         | Bin 0 -> 6792 bytes
 8 files changed, 146 insertions(+), 18 deletions(-)
 create mode 100644 kernel/tests/data/cdf-table-backtick-column-names.tar.zst
 create mode 100644 kernel/tests/data/cdf-table-data-change.tar.zst
 create mode 100644 kernel/tests/data/cdf-table-partitioned.tar.zst
 create mode 100644 kernel/tests/data/cdf-table-update-ops.tar.zst
 create mode 100644 kernel/tests/data/oussama_cdf.tar.zst

diff --git a/kernel/src/table_changes/mod.rs b/kernel/src/table_changes/mod.rs
index b74f65b7a..dad2f4e9b 100644
--- a/kernel/src/table_changes/mod.rs
+++ b/kernel/src/table_changes/mod.rs
@@ -138,6 +138,14 @@ impl TableChanges {
         start_version: Version,
         end_version: Option<Version>,
     ) -> DeltaResult<Self> {
+        let log_root = table_root.join("_delta_log/")?;
+        let log_segment = LogSegment::for_table_changes(
+            engine.get_file_system_client().as_ref(),
+            log_root,
+            start_version,
+            end_version,
+        )?;
+
         // Both snapshots ensure that reading is supported at the start and end version using
         // `ensure_read_supported`. Note that we must still verify that reading is
         // supported for every protocol action in the CDF range.
@@ -173,14 +181,6 @@ impl TableChanges {
             )));
         }
 
-        let log_root = table_root.join("_delta_log/")?;
-        let log_segment = LogSegment::for_table_changes(
-            engine.get_file_system_client().as_ref(),
-            log_root,
-            start_version,
-            end_version,
-        )?;
-
         let schema = StructType::new(
             end_snapshot
                 .schema()
diff --git a/kernel/tests/cdf.rs b/kernel/tests/cdf.rs
index 657a384e6..e84c1013e 100644
--- a/kernel/tests/cdf.rs
+++ b/kernel/tests/cdf.rs
@@ -6,7 +6,7 @@ use delta_kernel::engine::sync::SyncEngine;
 use itertools::Itertools;
 
 use delta_kernel::engine::arrow_data::ArrowEngineData;
-use delta_kernel::{DeltaResult, Table, Version};
+use delta_kernel::{DeltaResult, Error, ExpressionRef, Table, Version};
 
 mod common;
 use common::{load_test_data, to_arrow};
@@ -15,6 +15,7 @@ fn read_cdf_for_table(
     test_name: impl AsRef<str>,
     start_version: Version,
     end_version: impl Into<Option<Version>>,
+    predicate: impl Into<Option<ExpressionRef>>,
 ) -> DeltaResult<Vec<RecordBatch>> {
     let test_dir = load_test_data("tests/data", test_name.as_ref()).unwrap();
     let test_path = test_dir.path().join(test_name.as_ref());
@@ -34,6 +35,7 @@ fn read_cdf_for_table(
     let scan = table_changes
         .into_scan_builder()
         .with_schema(schema)
+        .with_predicate(predicate)
         .build()?;
     let batches: Vec<RecordBatch> = scan
         .execute(engine)?
@@ -53,7 +55,7 @@ fn read_cdf_for_table(
 
 #[test]
 fn cdf_with_deletion_vector() -> Result<(), Box<dyn error::Error>> {
-    let batches = read_cdf_for_table("cdf-table-with-dv", 0, None)?;
+    let batches = read_cdf_for_table("cdf-table-with-dv", 0, None, None)?;
     // Each commit performs the following:
     // 0. Insert  0..=9
     // 1. Remove  [0, 9]
@@ -99,7 +101,7 @@ fn cdf_with_deletion_vector() -> Result<(), Box<dyn error::Error>> {
 
 #[test]
 fn basic_cdf() -> Result<(), Box<dyn error::Error>> {
-    let batches = read_cdf_for_table("cdf-table", 0, None)?;
+    let batches = read_cdf_for_table("cdf-table", 0, None, None)?;
     let mut expected = vec![
         "+----+--------+------------+------------------+-----------------+",
         "| id | name   | birthday   | _change_type     | _commit_version |",
@@ -136,7 +138,7 @@ fn basic_cdf() -> Result<(), Box<dyn error::Error>> {
 
 #[test]
 fn cdf_non_partitioned() -> Result<(), Box<dyn error::Error>> {
-    let batches = read_cdf_for_table("cdf-table-non-partitioned", 0, None)?;
+    let batches = read_cdf_for_table("cdf-table-non-partitioned", 0, None, None)?;
     let mut expected = vec![
              "+----+--------+------------+-------------------+---------------+--------------+----------------+------------------+-----------------+",
              "| id | name   | birthday   | long_field        | boolean_field | double_field | smallint_field | _change_type     | _commit_version |",
@@ -175,7 +177,7 @@ fn cdf_non_partitioned() -> Result<(), Box<dyn error::Error>> {
 
 #[test]
 fn cdf_with_cdc_and_dvs() -> Result<(), Box<dyn error::Error>> {
-    let batches = read_cdf_for_table("cdf-table-with-cdc-and-dvs", 0, None)?;
+    let batches = read_cdf_for_table("cdf-table-with-cdc-and-dvs", 0, None, None)?;
     let mut expected = vec![
         "+----+--------------------+------------------+-----------------+",
         "| id | comment            | _change_type     | _commit_version |",
@@ -231,8 +233,8 @@ fn cdf_with_cdc_and_dvs() -> Result<(), Box<dyn error::Error>> {
 }
 
 #[test]
-fn test_simple_cdf_version_ranges() -> DeltaResult<()> {
-    let batches = read_cdf_for_table("cdf-table-simple", 0, 0)?;
+fn simple_cdf_version_ranges() -> DeltaResult<()> {
+    let batches = read_cdf_for_table("cdf-table-simple", 0, 0, None)?;
     let mut expected = vec![
         "+----+--------------+-----------------+",
         "| id | _change_type | _commit_version |",
@@ -252,7 +254,7 @@ fn test_simple_cdf_version_ranges() -> DeltaResult<()> {
     sort_lines!(expected);
     assert_batches_sorted_eq!(expected, &batches);
 
-    let batches = read_cdf_for_table("cdf-table-simple", 1, 1)?;
+    let batches = read_cdf_for_table("cdf-table-simple", 1, 1, None)?;
     let mut expected = vec![
         "+----+--------------+-----------------+",
         "| id | _change_type | _commit_version |",
@@ -272,7 +274,7 @@ fn test_simple_cdf_version_ranges() -> DeltaResult<()> {
     sort_lines!(expected);
     assert_batches_sorted_eq!(expected, &batches);
 
-    let batches = read_cdf_for_table("cdf-table-simple", 2, 2)?;
+    let batches = read_cdf_for_table("cdf-table-simple", 2, 2, None)?;
     let mut expected = vec![
         "+----+--------------+-----------------+",
         "| id | _change_type | _commit_version |",
@@ -287,7 +289,7 @@ fn test_simple_cdf_version_ranges() -> DeltaResult<()> {
     sort_lines!(expected);
     assert_batches_sorted_eq!(expected, &batches);
 
-    let batches = read_cdf_for_table("cdf-table-simple", 0, 2)?;
+    let batches = read_cdf_for_table("cdf-table-simple", 0, 2, None)?;
     let mut expected = vec![
         "+----+--------------+-----------------+",
         "| id | _change_type | _commit_version |",
@@ -323,3 +325,127 @@ fn test_simple_cdf_version_ranges() -> DeltaResult<()> {
     assert_batches_sorted_eq!(expected, &batches);
     Ok(())
 }
+
+#[test]
+fn update_operations() -> DeltaResult<()> {
+    let batches = read_cdf_for_table("cdf-table-update-ops", 0, 2, None)?;
+    // Note: `update_pre` and `update_post` are technically not part of the delta spec, but are
+    // part of the tests used in delta
+    let mut expected = vec![
+        "+----+--------------+-----------------+",
+        "| id | _change_type | _commit_version |",
+        "+----+--------------+-----------------+",
+        "| 0  | insert       | 0               |",
+        "| 1  | insert       | 0               |",
+        "| 2  | insert       | 0               |",
+        "| 3  | insert       | 0               |",
+        "| 4  | insert       | 0               |",
+        "| 5  | insert       | 0               |",
+        "| 6  | insert       | 0               |",
+        "| 7  | insert       | 0               |",
+        "| 8  | insert       | 0               |",
+        "| 9  | insert       | 0               |",
+        "| 20 | update_pre   | 1               |",
+        "| 21 | update_pre   | 1               |",
+        "| 22 | update_pre   | 1               |",
+        "| 23 | update_pre   | 1               |",
+        "| 24 | update_pre   | 1               |",
+        "| 30 | update_post  | 2               |",
+        "| 31 | update_post  | 2               |",
+        "| 32 | update_post  | 2               |",
+        "| 33 | update_post  | 2               |",
+        "| 34 | update_post  | 2               |",
+        "+----+--------------+-----------------+",
+    ];
+    sort_lines!(expected);
+    assert_batches_sorted_eq!(expected, &batches);
+    Ok(())
+}
+
+#[test]
+fn false_data_change_is_ignored() -> DeltaResult<()> {
+    let batches = read_cdf_for_table("cdf-table-data-change", 0, 1, None)?;
+    // Note: `update_pre` and `update_post` are technically not part of the delta spec, but are
+    // part of the tests used in delta
+    let mut expected = vec![
+        "+----+--------------+-----------------+",
+        "| id | _change_type | _commit_version |",
+        "+----+--------------+-----------------+",
+        "| 0  | insert       | 0               |",
+        "| 1  | insert       | 0               |",
+        "| 2  | insert       | 0               |",
+        "| 3  | insert       | 0               |",
+        "| 4  | insert       | 0               |",
+        "| 5  | insert       | 0               |",
+        "| 6  | insert       | 0               |",
+        "| 7  | insert       | 0               |",
+        "| 8  | insert       | 0               |",
+        "| 9  | insert       | 0               |",
+        "+----+--------------+-----------------+",
+    ];
+    sort_lines!(expected);
+    assert_batches_sorted_eq!(expected, &batches);
+    Ok(())
+}
+
+#[test]
+fn invalid_range_end_before_start() -> DeltaResult<()> {
+    let res = read_cdf_for_table("cdf-table-simple", 1, 0, None);
+    let expected_msg =
+        "Failed to build LogSegment: start_version cannot be greater than end_version";
+    assert!(matches!(res, Err(Error::Generic(msg)) if msg == expected_msg));
+    Ok(())
+}
+
+#[test]
+fn invalid_range_start_after_last_version_of_table() -> DeltaResult<()> {
+    let res = read_cdf_for_table("cdf-table-simple", 3, 4, None);
+    let expected_msg = "Expected the first commit to have version 3";
+    assert!(matches!(res, Err(Error::Generic(msg)) if msg == expected_msg));
+    Ok(())
+}
+
+#[test]
+fn partition_table() -> DeltaResult<()> {
+    let batches = read_cdf_for_table("cdf-table-partitioned", 0, 2, None)?;
+    let mut expected = vec![
+        "+----+------+------+------------------+-----------------+",
+        "| id | text | part | _change_type     | _commit_version |",
+        "+----+------+------+------------------+-----------------+",
+        "| 0  | old  | 0    | insert           | 0               |",
+        "| 1  | old  | 1    | insert           | 0               |",
+        "| 2  | old  | 0    | insert           | 0               |",
+        "| 3  | old  | 1    | insert           | 0               |",
+        "| 4  | old  | 0    | insert           | 0               |",
+        "| 5  | old  | 1    | insert           | 0               |",
+        "| 3  | old  | 1    | delete           | 1               |",
+        "| 1  | old  | 1    | update_preimage  | 1               |",
+        "| 1  | new  | 1    | update_postimage | 1               |",
+        "| 0  | old  | 0    | delete           | 2               |",
+        "| 2  | old  | 0    | delete           | 2               |",
+        "| 4  | old  | 0    | delete           | 2               |",
+        "+----+------+------+------------------+-----------------+",
+    ];
+    sort_lines!(expected);
+    assert_batches_sorted_eq!(expected, &batches);
+    Ok(())
+}
+
+#[test]
+fn backtick_column_names() -> DeltaResult<()> {
+    let batches = read_cdf_for_table("cdf-table-backtick-column-names", 0, None, None)?;
+    let mut expected = vec![
+        "+--------+----------+--------------------------+--------------+-----------------+",
+        "| id.num | id.num`s | struct_col               | _change_type | _commit_version |",
+        "+--------+----------+--------------------------+--------------+-----------------+",
+        "| 2      | 10       | {field: 1, field.one: 2} | insert       | 0               |",
+        "| 4      | 10       | {field: 1, field.one: 2} | insert       | 0               |",
+        "| 1      | 10       | {field: 1, field.one: 2} | insert       | 1               |",
+        "| 3      | 10       | {field: 1, field.one: 2} | insert       | 1               |",
+        "| 5      | 10       | {field: 1, field.one: 2} | insert       | 1               |",
+        "+--------+----------+--------------------------+--------------+-----------------+",
+    ];
+    sort_lines!(expected);
+    assert_batches_sorted_eq!(expected, &batches);
+    Ok(())
+}
diff --git a/kernel/tests/common/mod.rs b/kernel/tests/common/mod.rs
index a918695b7..3ae0056b8 100644
--- a/kernel/tests/common/mod.rs
+++ b/kernel/tests/common/mod.rs
@@ -46,9 +46,11 @@ pub(crate) fn load_test_data(
     test_name: &str,
 ) -> Result<tempfile::TempDir, Box<dyn std::error::Error>> {
     let path = format!("{test_parent_dir}/{test_name}.tar.zst");
+    println!("Path: {path}");
     let tar = zstd::Decoder::new(std::fs::File::open(path)?)?;
     let mut archive = tar::Archive::new(tar);
     let temp_dir = tempfile::tempdir()?;
+    println!("dir : {:?}", temp_dir.path());
     archive.unpack(temp_dir.path())?;
     Ok(temp_dir)
 }
diff --git a/kernel/tests/data/cdf-table-backtick-column-names.tar.zst b/kernel/tests/data/cdf-table-backtick-column-names.tar.zst
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From e8cc395f0138d9ecf9db7354dc98aca3fc22fa26 Mon Sep 17 00:00:00 2001
From: Oussama Saoudi <oussama.saoudi@databricks.com>
Date: Wed, 18 Dec 2024 16:19:54 -0800
Subject: [PATCH 3/6] Add deletion tests

---
 kernel/tests/cdf.rs                           |  94 ++++++++++++++++++
 ...-table-conditional-delete-all-rows.tar.zst | Bin 0 -> 3449 bytes
 ...-table-delete-conditional-two-rows.tar.zst | Bin 0 -> 3821 bytes
 .../cdf-table-delete-unconditional.tar.zst    | Bin 0 -> 2667 bytes
 4 files changed, 94 insertions(+)
 create mode 100644 kernel/tests/data/cdf-table-conditional-delete-all-rows.tar.zst
 create mode 100644 kernel/tests/data/cdf-table-delete-conditional-two-rows.tar.zst
 create mode 100644 kernel/tests/data/cdf-table-delete-unconditional.tar.zst

diff --git a/kernel/tests/cdf.rs b/kernel/tests/cdf.rs
index e84c1013e..0ed3402f7 100644
--- a/kernel/tests/cdf.rs
+++ b/kernel/tests/cdf.rs
@@ -449,3 +449,97 @@ fn backtick_column_names() -> DeltaResult<()> {
     assert_batches_sorted_eq!(expected, &batches);
     Ok(())
 }
+
+#[test]
+fn unconditional_delete() -> DeltaResult<()> {
+    let batches = read_cdf_for_table("cdf-table-delete-unconditional", 0, None, None)?;
+    let mut expected = vec![
+        "+----+--------------+-----------------+",
+        "| id | _change_type | _commit_version |",
+        "+----+--------------+-----------------+",
+        "| 0  | insert       | 0               |",
+        "| 1  | insert       | 0               |",
+        "| 2  | insert       | 0               |",
+        "| 3  | insert       | 0               |",
+        "| 4  | insert       | 0               |",
+        "| 5  | insert       | 0               |",
+        "| 6  | insert       | 0               |",
+        "| 7  | insert       | 0               |",
+        "| 8  | insert       | 0               |",
+        "| 9  | insert       | 0               |",
+        "| 0  | delete       | 1               |",
+        "| 1  | delete       | 1               |",
+        "| 2  | delete       | 1               |",
+        "| 3  | delete       | 1               |",
+        "| 4  | delete       | 1               |",
+        "| 5  | delete       | 1               |",
+        "| 6  | delete       | 1               |",
+        "| 7  | delete       | 1               |",
+        "| 8  | delete       | 1               |",
+        "| 9  | delete       | 1               |",
+        "+----+--------------+-----------------+",
+    ];
+    sort_lines!(expected);
+    assert_batches_sorted_eq!(expected, &batches);
+    Ok(())
+}
+
+#[test]
+fn conditional_delete_all_rows() -> DeltaResult<()> {
+    let batches = read_cdf_for_table("cdf-table-conditional-delete-all-rows", 0, None, None)?;
+    let mut expected = vec![
+        "+----+--------------+-----------------+",
+        "| id | _change_type | _commit_version |",
+        "+----+--------------+-----------------+",
+        "| 0  | insert       | 0               |",
+        "| 1  | insert       | 0               |",
+        "| 2  | insert       | 0               |",
+        "| 3  | insert       | 0               |",
+        "| 4  | insert       | 0               |",
+        "| 5  | insert       | 0               |",
+        "| 6  | insert       | 0               |",
+        "| 7  | insert       | 0               |",
+        "| 8  | insert       | 0               |",
+        "| 9  | insert       | 0               |",
+        "| 0  | delete       | 1               |",
+        "| 1  | delete       | 1               |",
+        "| 2  | delete       | 1               |",
+        "| 3  | delete       | 1               |",
+        "| 4  | delete       | 1               |",
+        "| 5  | delete       | 1               |",
+        "| 6  | delete       | 1               |",
+        "| 7  | delete       | 1               |",
+        "| 8  | delete       | 1               |",
+        "| 9  | delete       | 1               |",
+        "+----+--------------+-----------------+",
+    ];
+    sort_lines!(expected);
+    assert_batches_sorted_eq!(expected, &batches);
+    Ok(())
+}
+
+#[test]
+fn conditional_delete_two_rows() -> DeltaResult<()> {
+    let batches = read_cdf_for_table("cdf-table-delete-conditional-two-rows", 0, None, None)?;
+    let mut expected = vec![
+        "+----+--------------+-----------------+",
+        "| id | _change_type | _commit_version |",
+        "+----+--------------+-----------------+",
+        "| 0  | insert       | 0               |",
+        "| 1  | insert       | 0               |",
+        "| 2  | insert       | 0               |",
+        "| 3  | insert       | 0               |",
+        "| 4  | insert       | 0               |",
+        "| 5  | insert       | 0               |",
+        "| 6  | insert       | 0               |",
+        "| 7  | insert       | 0               |",
+        "| 8  | insert       | 0               |",
+        "| 9  | insert       | 0               |",
+        "| 2  | delete       | 1               |",
+        "| 8  | delete       | 1               |",
+        "+----+--------------+-----------------+",
+    ];
+    sort_lines!(expected);
+    assert_batches_sorted_eq!(expected, &batches);
+    Ok(())
+}
diff --git a/kernel/tests/data/cdf-table-conditional-delete-all-rows.tar.zst b/kernel/tests/data/cdf-table-conditional-delete-all-rows.tar.zst
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diff --git a/kernel/tests/data/cdf-table-delete-conditional-two-rows.tar.zst b/kernel/tests/data/cdf-table-delete-conditional-two-rows.tar.zst
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diff --git a/kernel/tests/data/cdf-table-delete-unconditional.tar.zst b/kernel/tests/data/cdf-table-delete-unconditional.tar.zst
new file mode 100644
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From 67a859622eebcf2a497e508801caf43226990dcf Mon Sep 17 00:00:00 2001
From: Oussama Saoudi <oussama.saoudi@databricks.com>
Date: Thu, 19 Dec 2024 16:36:28 -0800
Subject: [PATCH 4/6] address issues

---
 kernel/tests/cdf.rs        | 7 +++----
 kernel/tests/common/mod.rs | 2 --
 2 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/kernel/tests/cdf.rs b/kernel/tests/cdf.rs
index 0ed3402f7..45f48c608 100644
--- a/kernel/tests/cdf.rs
+++ b/kernel/tests/cdf.rs
@@ -329,8 +329,9 @@ fn simple_cdf_version_ranges() -> DeltaResult<()> {
 #[test]
 fn update_operations() -> DeltaResult<()> {
     let batches = read_cdf_for_table("cdf-table-update-ops", 0, 2, None)?;
-    // Note: `update_pre` and `update_post` are technically not part of the delta spec, but are
-    // part of the tests used in delta
+    // Note: `update_pre` and `update_post` are technically not part of the delta spec, and instead
+    // should be `update_preimage` and `update_postimage` respectively. However, the tests in
+    // delta-spark use the post and pre.
     let mut expected = vec![
         "+----+--------------+-----------------+",
         "| id | _change_type | _commit_version |",
@@ -365,8 +366,6 @@ fn update_operations() -> DeltaResult<()> {
 #[test]
 fn false_data_change_is_ignored() -> DeltaResult<()> {
     let batches = read_cdf_for_table("cdf-table-data-change", 0, 1, None)?;
-    // Note: `update_pre` and `update_post` are technically not part of the delta spec, but are
-    // part of the tests used in delta
     let mut expected = vec![
         "+----+--------------+-----------------+",
         "| id | _change_type | _commit_version |",
diff --git a/kernel/tests/common/mod.rs b/kernel/tests/common/mod.rs
index 3ae0056b8..a918695b7 100644
--- a/kernel/tests/common/mod.rs
+++ b/kernel/tests/common/mod.rs
@@ -46,11 +46,9 @@ pub(crate) fn load_test_data(
     test_name: &str,
 ) -> Result<tempfile::TempDir, Box<dyn std::error::Error>> {
     let path = format!("{test_parent_dir}/{test_name}.tar.zst");
-    println!("Path: {path}");
     let tar = zstd::Decoder::new(std::fs::File::open(path)?)?;
     let mut archive = tar::Archive::new(tar);
     let temp_dir = tempfile::tempdir()?;
-    println!("dir : {:?}", temp_dir.path());
     archive.unpack(temp_dir.path())?;
     Ok(temp_dir)
 }

From 249f4570d0b77a14de4a6ea4b8294e066b9b1148 Mon Sep 17 00:00:00 2001
From: Oussama Saoudi <oussama.saoudi@databricks.com>
Date: Thu, 19 Dec 2024 16:37:19 -0800
Subject: [PATCH 5/6] Remove unnecessary file

---
 kernel/tests/data/oussama_cdf.tar.zst | Bin 6792 -> 0 bytes
 1 file changed, 0 insertions(+), 0 deletions(-)
 delete mode 100644 kernel/tests/data/oussama_cdf.tar.zst

diff --git a/kernel/tests/data/oussama_cdf.tar.zst b/kernel/tests/data/oussama_cdf.tar.zst
deleted file mode 100644
index e690f73bb198fe18e0e3830846fc6d7fca279682..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

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From 6caa32ed6d099d14bfa2f33c9f0dc3a370b9939b Mon Sep 17 00:00:00 2001
From: Oussama Saoudi <oussama.saoudi@databricks.com>
Date: Thu, 19 Dec 2024 16:39:56 -0800
Subject: [PATCH 6/6] rename to consistent naming

---
 kernel/tests/cdf.rs                           |   2 +-
 ...table-delete-conditional-all-rows.tar.zst} | Bin 3449 -> 3449 bytes
 2 files changed, 1 insertion(+), 1 deletion(-)
 rename kernel/tests/data/{cdf-table-conditional-delete-all-rows.tar.zst => cdf-table-delete-conditional-all-rows.tar.zst} (94%)

diff --git a/kernel/tests/cdf.rs b/kernel/tests/cdf.rs
index 45f48c608..87f2eaf92 100644
--- a/kernel/tests/cdf.rs
+++ b/kernel/tests/cdf.rs
@@ -485,7 +485,7 @@ fn unconditional_delete() -> DeltaResult<()> {
 
 #[test]
 fn conditional_delete_all_rows() -> DeltaResult<()> {
-    let batches = read_cdf_for_table("cdf-table-conditional-delete-all-rows", 0, None, None)?;
+    let batches = read_cdf_for_table("cdf-table-delete-conditional-all-rows", 0, None, None)?;
     let mut expected = vec![
         "+----+--------------+-----------------+",
         "| id | _change_type | _commit_version |",
diff --git a/kernel/tests/data/cdf-table-conditional-delete-all-rows.tar.zst b/kernel/tests/data/cdf-table-delete-conditional-all-rows.tar.zst
similarity index 94%
rename from kernel/tests/data/cdf-table-conditional-delete-all-rows.tar.zst
rename to kernel/tests/data/cdf-table-delete-conditional-all-rows.tar.zst
index faefa4a483687e86137ec7f3e6eeba2497c67378..dbd28fad4126f5c339a82ac1f2ec67ff555c8a34 100644
GIT binary patch
delta 40
ycmV+@0N4Nd8u=QqGXf3uaWM40*TImx{P&;lvp@oE2LWuet_iaN0n4*u3l{>cpc1|S

delta 40
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