move some code and make nodeid computed early

_pytest/main.py

@@ -300,7 +300,7 @@ class Session(nodes.FSCollector):
     def __init__(self, config):
         nodes.FSCollector.__init__(
             self, config.rootdir, parent=None,
-            config=config, session=self)
+            config=config, session=self, nodeid="")
         self.testsfailed = 0
         self.testscollected = 0
         self.shouldstop = False
@@ -311,9 +311,6 @@ def __init__(self, config):
 
         self.config.pluginmanager.register(self, name="session")
 
-    def _makeid(self):
-        return ""
-
     @hookimpl(tryfirst=True)
     def pytest_collectstart(self):
         if self.shouldfail:

_pytest/mark/structures.py

@@ -1,4 +1,4 @@
-from collections import namedtuple
+from collections import namedtuple, MutableMapping as MappingMixin
 import warnings
 from operator import attrgetter
 import inspect
@@ -27,17 +27,17 @@ def istestfunc(func):
         getattr(func, "__name__", "<lambda>") != "<lambda>"
 
 
-def get_empty_parameterset_mark(config, argnames, function):
+def get_empty_parameterset_mark(config, argnames, func):
     requested_mark = config.getini(EMPTY_PARAMETERSET_OPTION)
     if requested_mark in ('', None, 'skip'):
         mark = MARK_GEN.skip
     elif requested_mark == 'xfail':
         mark = MARK_GEN.xfail(run=False)
     else:
         raise LookupError(requested_mark)
-    fs, lineno = getfslineno(function)
+    fs, lineno = getfslineno(func)
     reason = "got empty parameter set %r, function %s at %s:%d" % (
-        argnames, function.__name__, fs, lineno)
+        argnames, func.__name__, fs, lineno)
     return mark(reason=reason)
 
 
@@ -53,8 +53,8 @@ def param(cls, *values, **kw):
         def param_extract_id(id=None):
             return id
 
-        id = param_extract_id(**kw)
-        return cls(values, marks, id)
+        id_ = param_extract_id(**kw)
+        return cls(values, marks, id_)
 
     @classmethod
     def extract_from(cls, parameterset, legacy_force_tuple=False):
@@ -90,7 +90,7 @@ def extract_from(cls, parameterset, legacy_force_tuple=False):
         return cls(argval, marks=newmarks, id=None)
 
     @classmethod
-    def _for_parametrize(cls, argnames, argvalues, function, config):
+    def _for_parametrize(cls, argnames, argvalues, func, config):
         if not isinstance(argnames, (tuple, list)):
             argnames = [x.strip() for x in argnames.split(",") if x.strip()]
             force_tuple = len(argnames) == 1
@@ -102,7 +102,7 @@ def _for_parametrize(cls, argnames, argvalues, function, config):
         del argvalues
 
         if not parameters:
-            mark = get_empty_parameterset_mark(config, argnames, function)
+            mark = get_empty_parameterset_mark(config, argnames, func)
             parameters.append(ParameterSet(
                 values=(NOTSET,) * len(argnames),
                 marks=[mark],
@@ -328,3 +328,40 @@ def _check(self, name):
 
 
 MARK_GEN = MarkGenerator()
+
+
+class NodeKeywords(MappingMixin):
+    def __init__(self, node):
+        self.node = node
+        self.parent = node.parent
+        self._markers = {node.name: True}
+
+    def __getitem__(self, key):
+        try:
+            return self._markers[key]
+        except KeyError:
+            if self.parent is None:
+                raise
+            return self.parent.keywords[key]
+
+    def __setitem__(self, key, value):
+        self._markers[key] = value
+
+    def __delitem__(self, key):
+        raise ValueError("cannot delete key in keywords dict")
+
+    def __iter__(self):
+        seen = self._seen()
+        return iter(seen)
+
+    def _seen(self):
+        seen = set(self._markers)
+        if self.parent is not None:
+            seen.update(self.parent.keywords)
+        return seen
+
+    def __len__(self):
+        return len(self._seen())
+
+    def __repr__(self):
+        return "<NodeKeywords for node %s>" % (self.node, )

_pytest/nodes.py

@@ -1,13 +1,14 @@
 from __future__ import absolute_import, division, print_function
-from collections import MutableMapping as MappingMixin
 import os
 
 import six
 import py
 import attr
 
 import _pytest
+import _pytest._code
 
+from _pytest.mark.structures import NodeKeywords
 
 SEP = "/"
 
@@ -66,47 +67,11 @@ def __get__(self, obj, owner):
         return getattr(__import__('pytest'), self.name)
 
 
-class NodeKeywords(MappingMixin):
-    def __init__(self, node):
-        self.node = node
-        self.parent = node.parent
-        self._markers = {node.name: True}
-
-    def __getitem__(self, key):
-        try:
-            return self._markers[key]
-        except KeyError:
-            if self.parent is None:
-                raise
-            return self.parent.keywords[key]
-
-    def __setitem__(self, key, value):
-        self._markers[key] = value
-
-    def __delitem__(self, key):
-        raise ValueError("cannot delete key in keywords dict")
-
-    def __iter__(self):
-        seen = set(self._markers)
-        if self.parent is not None:
-            seen.update(self.parent.keywords)
-        return iter(seen)
-
-    def __len__(self):
-        return len(self.__iter__())
-
-    def keys(self):
-        return list(self)
-
-    def __repr__(self):
-        return "<NodeKeywords for node %s>" % (self.node, )
-
-
 class Node(object):
     """ base class for Collector and Item the test collection tree.
     Collector subclasses have children, Items are terminal nodes."""
 
-    def __init__(self, name, parent=None, config=None, session=None):
+    def __init__(self, name, parent=None, config=None, session=None, fspath=None, nodeid=None):
         #: a unique name within the scope of the parent node
         self.name = name
 
@@ -120,7 +85,7 @@ def __init__(self, name, parent=None, config=None, session=None):
         self.session = session or parent.session
 
         #: filesystem path where this node was collected from (can be None)
-        self.fspath = getattr(parent, 'fspath', None)
+        self.fspath = fspath or getattr(parent, 'fspath', None)
 
         #: keywords/markers collected from all scopes
         self.keywords = NodeKeywords(self)
@@ -131,6 +96,12 @@ def __init__(self, name, parent=None, config=None, session=None):
         # used for storing artificial fixturedefs for direct parametrization
         self._name2pseudofixturedef = {}
 
+        if nodeid is not None:
+            self._nodeid = nodeid
+        else:
+            assert parent is not None
+            self._nodeid = self.parent.nodeid + "::" + self.name
+
     @property
     def ihook(self):
         """ fspath sensitive hook proxy used to call pytest hooks"""
@@ -174,14 +145,7 @@ def warn(self, code, message):
     @property
     def nodeid(self):
         """ a ::-separated string denoting its collection tree address. """
-        try:
-            return self._nodeid
-        except AttributeError:
-            self._nodeid = x = self._makeid()
-            return x
-
-    def _makeid(self):
-        return self.parent.nodeid + "::" + self.name
+        return self._nodeid
 
     def __hash__(self):
         return hash(self.nodeid)
@@ -227,7 +191,6 @@ def get_marker(self, name):
     def listextrakeywords(self):
         """ Return a set of all extra keywords in self and any parents."""
         extra_keywords = set()
-        item = self
         for item in self.listchain():
             extra_keywords.update(item.extra_keyword_matches)
         return extra_keywords
@@ -319,31 +282,34 @@ def _prunetraceback(self, excinfo):
             excinfo.traceback = ntraceback.filter()
 
 
+def _check_initialpaths_for_relpath(session, fspath):
+    for initial_path in session._initialpaths:
+        if fspath.common(initial_path) == initial_path:
+            return fspath.relto(initial_path.dirname)
+
+
 class FSCollector(Collector):
-    def __init__(self, fspath, parent=None, config=None, session=None):
+    def __init__(self, fspath, parent=None, config=None, session=None, nodeid=None):
         fspath = py.path.local(fspath)  # xxx only for test_resultlog.py?
         name = fspath.basename
         if parent is not None:
             rel = fspath.relto(parent.fspath)
             if rel:
                 name = rel
             name = name.replace(os.sep, SEP)
-        super(FSCollector, self).__init__(name, parent, config, session)
         self.fspath = fspath
 
-    def _check_initialpaths_for_relpath(self):
-        for initialpath in self.session._initialpaths:
-            if self.fspath.common(initialpath) == initialpath:
-                return self.fspath.relto(initialpath.dirname)
+        session = session or parent.session
+
+        if nodeid is None:
+            nodeid = self.fspath.relto(session.config.rootdir)
 
-    def _makeid(self):
-        relpath = self.fspath.relto(self.config.rootdir)
+            if not nodeid:
+                nodeid = _check_initialpaths_for_relpath(session, fspath)
+            if os.sep != SEP:
+                nodeid = nodeid.replace(os.sep, SEP)
 
-        if not relpath:
-            relpath = self._check_initialpaths_for_relpath()
-        if os.sep != SEP:
-            relpath = relpath.replace(os.sep, SEP)
-        return relpath
+        super(FSCollector, self).__init__(name, parent, config, session, nodeid=nodeid, fspath=fspath)
 
 
 class File(FSCollector):
@@ -356,8 +322,8 @@ class Item(Node):
     """
     nextitem = None
 
-    def __init__(self, name, parent=None, config=None, session=None):
-        super(Item, self).__init__(name, parent, config, session)
+    def __init__(self, name, parent=None, config=None, session=None, nodeid=None):
+        super(Item, self).__init__(name, parent, config, session, nodeid=nodeid)
         self._report_sections = []
 
         #: user properties is a list of tuples (name, value) that holds user

_pytest/terminal.py

@@ -22,9 +22,9 @@
 def pytest_addoption(parser):
     group = parser.getgroup("terminal reporting", "reporting", after="general")
     group._addoption('-v', '--verbose', action="count",
-                     dest="verbose", default=0, help="increase verbosity."),
+                     dest="verbose", default=0, help="increase verbosity.")
     group._addoption('-q', '--quiet', action="count",
-                     dest="quiet", default=0, help="decrease verbosity."),
+                     dest="quiet", default=0, help="decrease verbosity.")
     group._addoption('-r',
                      action="store", dest="reportchars", default='', metavar="chars",
                      help="show extra test summary info as specified by chars (f)ailed, "

changelog/3291.trivial.rst

@@ -0,0 +1 @@
+``nodeids`` can now be passed explicitly to ``FSCollector`` and ``Node`` constructors.

testing/test_resultlog.py

@@ -13,7 +13,7 @@ def test_generic_path(testdir):
     from _pytest.main import Session
     config = testdir.parseconfig()
     session = Session(config)
-    p1 = Node('a', config=config, session=session)
+    p1 = Node('a', config=config, session=session, nodeid='a')
     # assert p1.fspath is None
     p2 = Node('B', parent=p1)
     p3 = Node('()', parent=p2)