Fix validation of the Poetry configuration

poetry/console/commands/check.py

+from poetry.poetry import Poetry
+from poetry.utils._compat import Path
+from poetry.utils.toml_file import TomlFile
+
 from .command import Command
 
 
@@ -7,8 +11,10 @@ class CheckCommand(Command):
     description = "Checks the validity of the <comment>pyproject.toml</comment> file."
 
     def handle(self):
-        # Load poetry and display errors, if any
-        check_result = self.poetry.check(self.poetry.local_config, strict=True)
+        # Load poetry config and display errors, if any
+        poetry_file = Poetry.locate(Path.cwd())
+        config = TomlFile(str(poetry_file)).read()["tool"]["poetry"]
+        check_result = Poetry.check(config, strict=True)
         if not check_result["errors"] and not check_result["warnings"]:
             self.info("All set!")
 

poetry/json/schemas/poetry-schema.json

@@ -404,6 +404,7 @@
         "extra-script": {
             "type": "object",
             "description": "A script that should be installed only if extras are activated.",
+            "additionalProperties": false,
             "properties": {
                 "callable": {
                     "$ref": "#/definitions/script"
@@ -419,6 +420,7 @@
         },
         "repository": {
             "type": "object",
+            "additionalProperties": false,
             "properties": {
                 "name": {
                     "type": "string",

poetry/poetry.py

@@ -86,21 +86,7 @@ class Poetry:
 
     @classmethod
     def create(cls, cwd):  # type: (Path) -> Poetry
-        candidates = [Path(cwd)]
-        candidates.extend(Path(cwd).parents)
-
-        for path in candidates:
-            poetry_file = path / "pyproject.toml"
-
-            if poetry_file.exists():
-                break
-
-        else:
-            raise RuntimeError(
-                "Poetry could not find a pyproject.toml file in {} or its parents".format(
-                    cwd
-                )
-            )
+        poetry_file = cls.locate(cwd)
 
         local_config = TomlFile(poetry_file.as_posix()).read()
         if "tool" not in local_config or "poetry" not in local_config["tool"]:
@@ -110,7 +96,13 @@ class Poetry:
         local_config = local_config["tool"]["poetry"]
 
         # Checking validity
-        cls.check(local_config)
+        check_result = cls.check(local_config)
+        if check_result["errors"]:
+            message = ""
+            for error in check_result["errors"]:
+                message += "  - {}\n".format(error)
+
+            raise RuntimeError("The Poetry configuration is invalid:\n" + message)
 
         # Load package
         name = local_config["name"]
@@ -224,6 +216,24 @@ class Poetry:
         return LegacyRepository(name, url, auth=auth)
 
     @classmethod
+    def locate(cls, cwd):  # type: (Path) -> Poetry
+        candidates = [Path(cwd)]
+        candidates.extend(Path(cwd).parents)
+
+        for path in candidates:
+            poetry_file = path / "pyproject.toml"
+
+            if poetry_file.exists():
+                return poetry_file
+
+        else:
+            raise RuntimeError(
+                "Poetry could not find a pyproject.toml file in {} or its parents".format(
+                    cwd
+                )
+            )
+
+    @classmethod
     def check(cls, config, strict=False):  # type: (dict, bool) -> Dict[str, List[str]]
         """
         Checks the validity of a configuration

tests/console/commands/test_check.py

@@ -18,10 +18,15 @@ All set!
     assert expected == tester.io.fetch_output()
 
 
-def test_check_invalid(app):
-    app._poetry = Poetry.create(
-        Path(__file__).parent.parent.parent / "fixtures" / "invalid_pyproject"
+def test_check_invalid(app, mocker):
+    mocker.patch(
+        "poetry.poetry.Poetry.locate",
+        return_value=Path(__file__).parent.parent.parent
+        / "fixtures"
+        / "invalid_pyproject"
+        / "pyproject.toml",
     )
+
     command = app.find("check")
     tester = CommandTester(command)
 

tests/test_poetry.py

@@ -169,3 +169,22 @@ def test_check_fails():
         )
 
     assert Poetry.check(content) == {"errors": [expected], "warnings": []}
+
+
+def test_create_fails_on_invalid_configuration():
+    with pytest.raises(RuntimeError) as e:
+        Poetry.create(
+            Path(__file__).parent / "fixtures" / "invalid_pyproject" / "pyproject.toml"
+        )
+
+    if PY2:
+        expected = """\
+The Poetry configuration is invalid:
+  - u'description' is a required property
+"""
+    else:
+        expected = """\
+The Poetry configuration is invalid:
+  - 'description' is a required property
+"""
+    assert expected == str(e.value)