add a test

py-rattler-build/README.md

@@ -1 +1 @@
-# Python bindings to rattler-build
+# Python bindings to rattler-build

py-rattler-build/rattler_build/__init__.py

@@ -1,4 +1,5 @@
-from .rattler_build import get_rattler_build_version_py as _get_rattler_build_version_py
+from .rattler_build import \
+    get_rattler_build_version_py as _get_rattler_build_version_py
 
 
 def rattler_build_version() -> str:

py-rattler-build/tests/unit/test_basic.py

@@ -1,6 +1,7 @@
-import rattler_build
 from pathlib import Path
 
+import rattler_build
+
 
 def test_basic() -> None:
     parent_cargo_toml = Path(__file__).parent.parent.parent.parent / "Cargo.toml"

test-data/recipes/cache/recipe-symlinks.yaml

@@ -14,6 +14,7 @@ cache:
       ln -s $PREFIX/foo.txt $PREFIX/absolute-symlink.txt
       ln -s $PREFIX/non-existent-file $PREFIX/broken-symlink.txt
       ln -s ./foo.txt $PREFIX/relative-symlink.txt
+      echo ${{ PREFIX }} > $PREFIX/prefix.txt
 
 outputs:
   - package:

test/end-to-end/__snapshots__/test_symlinks/test_symlink_cache.json

@@ -24,6 +24,13 @@
       "sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
       "size_in_bytes": 0
     },
+    {
+      "_path": "prefix.txt",
+      "file_mode": "text",
+      "path_type": "hardlink",
+      "sha256": "1f7c780c5a35eeab2ffd8a7d38f9db34974e84ca569db0ff99af21159b5d02d6",
+      "size_in_bytes": 256
+    },
     {
       "_path": "relative-symlink.txt",
       "path_type": "softlink",

test/end-to-end/test_symlinks.py

@@ -4,6 +4,7 @@
 
 import pytest
 from helpers import RattlerBuild, get_extracted_package
+from syrupy.filters import paths as filter_paths
 
 
 @pytest.mark.skipif(
@@ -34,10 +35,11 @@ def test_symlink_cache(
 
     paths_json = pkg / "info/paths.json"
     j = json.loads(paths_json.read_text())
-    assert snapshot_json == j
+    # prefix placeholder always changes, and we test it later
+    assert snapshot_json(exclude=filter_paths("paths.4.prefix_placeholder")) == j
 
     paths = j["paths"]
-    assert len(paths) == 5
+    assert len(paths) == 6
     for p in paths:
         if "symlink" in p["_path"]:
             assert p["path_type"] == "softlink"
@@ -61,3 +63,13 @@ def test_symlink_cache(
     relative_symlink = pkg / "bin/exe-symlink"
     assert relative_symlink.is_symlink()
     assert relative_symlink.readlink() == Path("exe")
+
+    prefix_txt = pkg / "prefix.txt"
+    assert prefix_txt.exists()
+    contents = prefix_txt.read_text()
+    assert contents.len() > 0
+    # find the path in paths.json for the prefix.txt
+    for p in paths:
+        if p["_path"] == "prefix.txt":
+            assert p["path_type"] == "hardlink"
+            assert p["prefix_placeholder"] == contents.strip()