diff --git a/codex-rs/apply-patch/tests/fixtures/scenarios/020_delete_file_success/expected/keep.txt b/codex-rs/apply-patch/tests/fixtures/scenarios/020_delete_file_success/expected/keep.txt
new file mode 100644
index 000000000..2fa992c0b
--- /dev/null
+++ b/codex-rs/apply-patch/tests/fixtures/scenarios/020_delete_file_success/expected/keep.txt
@@ -0,0 +1 @@
+keep
diff --git a/codex-rs/apply-patch/tests/fixtures/scenarios/020_delete_file_success/input/keep.txt b/codex-rs/apply-patch/tests/fixtures/scenarios/020_delete_file_success/input/keep.txt
new file mode 100644
index 000000000..2fa992c0b
--- /dev/null
+++ b/codex-rs/apply-patch/tests/fixtures/scenarios/020_delete_file_success/input/keep.txt
@@ -0,0 +1 @@
+keep
diff --git a/codex-rs/apply-patch/tests/fixtures/scenarios/020_delete_file_success/input/obsolete.txt b/codex-rs/apply-patch/tests/fixtures/scenarios/020_delete_file_success/input/obsolete.txt
new file mode 100644
index 000000000..6e263abce
--- /dev/null
+++ b/codex-rs/apply-patch/tests/fixtures/scenarios/020_delete_file_success/input/obsolete.txt
@@ -0,0 +1 @@
+obsolete
diff --git a/codex-rs/apply-patch/tests/fixtures/scenarios/020_delete_file_success/patch.txt b/codex-rs/apply-patch/tests/fixtures/scenarios/020_delete_file_success/patch.txt
new file mode 100644
index 000000000..5978f7388
--- /dev/null
+++ b/codex-rs/apply-patch/tests/fixtures/scenarios/020_delete_file_success/patch.txt
@@ -0,0 +1,3 @@
+*** Begin Patch
+*** Delete File: obsolete.txt
+*** End Patch
diff --git a/codex-rs/apply-patch/tests/fixtures/scenarios/021_update_file_deletion_only/expected/lines.txt b/codex-rs/apply-patch/tests/fixtures/scenarios/021_update_file_deletion_only/expected/lines.txt
new file mode 100644
index 000000000..8129d305c
--- /dev/null
+++ b/codex-rs/apply-patch/tests/fixtures/scenarios/021_update_file_deletion_only/expected/lines.txt
@@ -0,0 +1,2 @@
+line1
+line3
diff --git a/codex-rs/apply-patch/tests/fixtures/scenarios/021_update_file_deletion_only/input/lines.txt b/codex-rs/apply-patch/tests/fixtures/scenarios/021_update_file_deletion_only/input/lines.txt
new file mode 100644
index 000000000..83db48f84
--- /dev/null
+++ b/codex-rs/apply-patch/tests/fixtures/scenarios/021_update_file_deletion_only/input/lines.txt
@@ -0,0 +1,3 @@
+line1
+line2
+line3
diff --git a/codex-rs/apply-patch/tests/fixtures/scenarios/021_update_file_deletion_only/patch.txt b/codex-rs/apply-patch/tests/fixtures/scenarios/021_update_file_deletion_only/patch.txt
new file mode 100644
index 000000000..860c6c9a9
--- /dev/null
+++ b/codex-rs/apply-patch/tests/fixtures/scenarios/021_update_file_deletion_only/patch.txt
@@ -0,0 +1,7 @@
+*** Begin Patch
+*** Update File: lines.txt
+@@
+ line1
+-line2
+ line3
+*** End Patch
diff --git a/codex-rs/apply-patch/tests/fixtures/scenarios/022_update_file_end_of_file_marker/expected/tail.txt b/codex-rs/apply-patch/tests/fixtures/scenarios/022_update_file_end_of_file_marker/expected/tail.txt
new file mode 100644
index 000000000..87463f92d
--- /dev/null
+++ b/codex-rs/apply-patch/tests/fixtures/scenarios/022_update_file_end_of_file_marker/expected/tail.txt
@@ -0,0 +1,2 @@
+first
+second updated
diff --git a/codex-rs/apply-patch/tests/fixtures/scenarios/022_update_file_end_of_file_marker/input/tail.txt b/codex-rs/apply-patch/tests/fixtures/scenarios/022_update_file_end_of_file_marker/input/tail.txt
new file mode 100644
index 000000000..66a52ee7a
--- /dev/null
+++ b/codex-rs/apply-patch/tests/fixtures/scenarios/022_update_file_end_of_file_marker/input/tail.txt
@@ -0,0 +1,2 @@
+first
+second
diff --git a/codex-rs/apply-patch/tests/fixtures/scenarios/022_update_file_end_of_file_marker/patch.txt b/codex-rs/apply-patch/tests/fixtures/scenarios/022_update_file_end_of_file_marker/patch.txt
new file mode 100644
index 000000000..8b16b5bd9
--- /dev/null
+++ b/codex-rs/apply-patch/tests/fixtures/scenarios/022_update_file_end_of_file_marker/patch.txt
@@ -0,0 +1,8 @@
+*** Begin Patch
+*** Update File: tail.txt
+@@
+ first
+-second
++second updated
+*** End of File
+*** End Patch