From c26761ec410c351a38499023b7cafd3adb9b9a54 Mon Sep 17 00:00:00 2001
From: Evan Martin <evan.martin@gmail.com>
Date: Thu, 4 Jan 2024 11:37:05 -0800
Subject: [PATCH] snapshots of llvm build artifacts

---
 tests/snapshot/.gitattributes |  1 +
 tests/snapshot/.gitignore     |  2 ++
 tests/snapshot/README.md      | 34 ++++++++++++++++++++++++++++++++++
 tests/snapshot/snapshot.zip   |  3 +++
 4 files changed, 40 insertions(+)
 create mode 100644 tests/snapshot/.gitattributes
 create mode 100644 tests/snapshot/.gitignore
 create mode 100644 tests/snapshot/README.md
 create mode 100644 tests/snapshot/snapshot.zip

diff --git a/tests/snapshot/.gitattributes b/tests/snapshot/.gitattributes
new file mode 100644
index 0000000..d0485a7
--- /dev/null
+++ b/tests/snapshot/.gitattributes
@@ -0,0 +1 @@
+snapshot.zip filter=lfs diff=lfs merge=lfs -text
diff --git a/tests/snapshot/.gitignore b/tests/snapshot/.gitignore
new file mode 100644
index 0000000..b5eef6b
--- /dev/null
+++ b/tests/snapshot/.gitignore
@@ -0,0 +1,2 @@
+llvm-cmake/
+llvm-gn/
diff --git a/tests/snapshot/README.md b/tests/snapshot/README.md
new file mode 100644
index 0000000..72b9a5f
--- /dev/null
+++ b/tests/snapshot/README.md
@@ -0,0 +1,34 @@
+# Snapshot tests
+
+This directory contains real-world outputs from tools that generate Ninja files.
+
+Because these outputs are large, they aren't checked in to the Ninja tree.
+Instead there is a `snapshot.zip` stored with Git LFS.  Unpack it with
+
+```
+$ unzip snapshot.zip
+```
+
+## Test data
+
+### llvm-cmake
+
+`llvm-cmake/` contains LLVM build files generated by CMake.
+
+https://llvm.org/docs/GettingStarted.html (note they have a CMake-specific page
+that has instructions that don't work(?!))
+
+```
+$ cmake -G Ninja -B build -S llvm -DCMAKE_BUILD_TYPE=Release
+```
+
+### llvm-gn
+
+`llvm-gn/` contains LLVM build files generated by the GN build system.
+
+Read llvm/utils/gn/README.rst in LLVM checkout for more, but in brief.
+
+```
+$ llvm/utils/gn/get.py
+$ llvm/utils/gn/gn.py gen out/gn
+```
diff --git a/tests/snapshot/snapshot.zip b/tests/snapshot/snapshot.zip
new file mode 100644
index 0000000..56874a1
--- /dev/null
+++ b/tests/snapshot/snapshot.zip
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d6eaebc8e3724cfe96a4fe7733784cb3496f67143819ad213d329a072c7ade6c
+size 3596661