feat: add strict flag to package content validation

conda_recipe_v2_schema/model.py

@@ -500,9 +500,21 @@ class DownstreamTestElement(StrictBaseModel):
     )
 
 
+class FileChecks(StrictBaseModel):
+    exists: ConditionalList[NonEmptyStr] | None = Field(
+        default=[],
+        description="Files or glob patterns that must exist anywhere inside the package.",
+    )
+    not_exists: ConditionalList[NonEmptyStr] | None = Field(
+        default=[],
+        description="Files or glob patterns that must NOT exist anywhere inside the package.",
+    )
+
+
 class PackageContentTestInner(StrictBaseModel):
-    files: ConditionalList[NonEmptyStr] | None = Field(
-        default=[], description="Files that should be in the package"
+    files: ConditionalList[NonEmptyStr] | FileChecks | None = Field(
+        default=None,
+        description="Files expectations for the whole package. Can be a list of files/globs or an object with exists/not_exists.",
     )
     include: ConditionalList[NonEmptyStr] | None = Field(
         default=[],
@@ -520,6 +532,10 @@ class PackageContentTestInner(StrictBaseModel):
         default=[],
         description="Files that should be in the `lib/` folder of the package. This folder is found under `$PREFIX/lib` on Unix and %PREFIX%/Library/lib on Windows.",
     )
+    strict: bool = Field(
+        default=False,
+        description="When true, the package must not contain any files other than those specified.",
+    )
 
 
 class PackageContentTest(StrictBaseModel):

schema.json

@@ -1227,6 +1227,75 @@
       "title": "DynamicLinking",
       "type": "object"
     },
+    "FileChecks": {
+      "additionalProperties": false,
+      "properties": {
+        "exists": {
+          "anyOf": [
+            {
+              "minLength": 1,
+              "type": "string"
+            },
+            {
+              "$ref": "#/$defs/IfStatement"
+            },
+            {
+              "items": {
+                "anyOf": [
+                  {
+                    "minLength": 1,
+                    "type": "string"
+                  },
+                  {
+                    "$ref": "#/$defs/IfStatement"
+                  }
+                ]
+              },
+              "type": "array"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "default": [],
+          "description": "Files or glob patterns that must exist anywhere inside the package.",
+          "title": "Exists"
+        },
+        "not_exists": {
+          "anyOf": [
+            {
+              "minLength": 1,
+              "type": "string"
+            },
+            {
+              "$ref": "#/$defs/IfStatement"
+            },
+            {
+              "items": {
+                "anyOf": [
+                  {
+                    "minLength": 1,
+                    "type": "string"
+                  },
+                  {
+                    "$ref": "#/$defs/IfStatement"
+                  }
+                ]
+              },
+              "type": "array"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "default": [],
+          "description": "Files or glob patterns that must NOT exist anywhere inside the package.",
+          "title": "Not Exists"
+        }
+      },
+      "title": "FileChecks",
+      "type": "object"
+    },
     "FileScript": {
       "additionalProperties": false,
       "properties": {
@@ -2945,12 +3014,15 @@
               },
               "type": "array"
             },
+            {
+              "$ref": "#/$defs/FileChecks"
+            },
             {
               "type": "null"
             }
           ],
-          "default": [],
-          "description": "Files that should be in the package",
+          "default": null,
+          "description": "Files expectations for the whole package. Can be a list of files/globs or an object with exists/not_exists.",
           "title": "Files"
         },
         "include": {
@@ -3076,6 +3148,12 @@
           "default": [],
           "description": "Files that should be in the `lib/` folder of the package. This folder is found under `$PREFIX/lib` on Unix and %PREFIX%/Library/lib on Windows.",
           "title": "Lib"
+        },
+        "strict": {
+          "default": false,
+          "description": "When true, the package must not contain any files other than those specified.",
+          "title": "Strict",
+          "type": "boolean"
         }
       },
       "title": "PackageContentTestInner",

tests/test_recipy.py

@@ -148,3 +148,83 @@ def test_r_test_invalid_missing_libraries():
     recipe_dict = yaml.safe_load(recipe_yaml)
     with pytest.raises(PydanticValidationError):
         Recipe.validate_python(recipe_dict)
+
+
+def test_package_contents_strict_valid(recipe_schema):
+    """Recipes with a boolean strict flag should validate successfully."""
+    for strict_val in (True, False):
+        recipe_yaml = f"""
+        package:
+          name: test
+          version: 1.0.0
+        tests:
+          - package_contents:
+              strict: {str(strict_val).lower()}
+              files:
+                - foo.txt
+        """
+        recipe_dict = yaml.safe_load(recipe_yaml)
+
+        Recipe.validate_python(recipe_dict)
+
+        validate(instance=recipe_dict, schema=recipe_schema)
+
+
+def test_package_contents_strict_invalid_type(recipe_schema):
+    """Non-boolean values for strict should fail validation."""
+    recipe_yaml = """
+    package:
+      name: test
+      version: 1.0.0
+    tests:
+      - package_contents:
+          strict: 123
+    """
+    recipe_dict = yaml.safe_load(recipe_yaml)
+
+    with pytest.raises(PydanticValidationError):
+        Recipe.validate_python(recipe_dict)
+
+    with pytest.raises(ValidationError):
+        validate(instance=recipe_dict, schema=recipe_schema)
+
+
+def test_package_contents_exists_and_not_exists_valid(recipe_schema):
+    """Recipes using files.exists / files.not_exists should validate successfully."""
+    recipe_yaml = """
+    package:
+      name: test
+      version: 1.0.0
+    tests:
+      - package_contents:
+          files:
+            exists:
+              - bar.txt
+            not_exists:
+              - secret.key
+              - '*.pem'
+    """
+    recipe_dict = yaml.safe_load(recipe_yaml)
+
+    Recipe.validate_python(recipe_dict)
+    validate(instance=recipe_dict, schema=recipe_schema)
+
+
+def test_package_contents_exists_invalid_type(recipe_schema):
+    """Non-string/non-list values for exists should fail validation."""
+    recipe_yaml = """
+    package:
+      name: test
+      version: 1.0.0
+    tests:
+      - package_contents:
+          files:
+            exists: 123
+    """
+    recipe_dict = yaml.safe_load(recipe_yaml)
+
+    with pytest.raises(PydanticValidationError):
+        Recipe.validate_python(recipe_dict)
+
+    with pytest.raises(ValidationError):
+        validate(instance=recipe_dict, schema=recipe_schema)