Move env.doc2path() and env.path2doc() to Project class

tests/test_project.py

@@ -9,6 +9,8 @@
     :license: BSD, see LICENSE for details.
 """
 
+from collections import OrderedDict
+
 import pytest
 
 from sphinx.project import Project
@@ -47,3 +49,36 @@ def test_project_discovery(rootdir):
                                    '_templates/contentssb'}
 
     assert project.discovery(['_templates']) == set()
+
+
+@pytest.mark.sphinx(testroot='basic')
+def test_project_path2doc(app):
+    project = Project(app.srcdir, app.config.source_suffix)
+    assert project.path2doc('index.rst') == 'index'
+    assert project.path2doc('index.foo') is None  # unknown extension
+    assert project.path2doc('index.foo.rst') == 'index.foo'
+    assert project.path2doc('index') is None
+    assert project.path2doc('/path/to/index.rst') == '/path/to/index'
+    assert project.path2doc(app.srcdir / '/to/index.rst') == '/to/index'
+
+
+@pytest.mark.sphinx(srcdir='project_doc2path', testroot='basic')
+def test_project_doc2path(app):
+    source_suffix = OrderedDict([('.rst', 'restructuredtext'),
+                                 ('.txt', 'restructuredtext')])
+
+    project = Project(app.srcdir, source_suffix)
+    assert project.doc2path('index') == (app.srcdir / 'index.rst')
+
+    # first source_suffix is used for missing file
+    assert project.doc2path('foo') == (app.srcdir / 'foo.rst')
+
+    # matched source_suffix is used if exists
+    (app.srcdir / 'foo.txt').write_text('')
+    assert project.doc2path('foo') == (app.srcdir / 'foo.txt')
+
+    # absolute path
+    assert project.doc2path('index', basedir=True) == (app.srcdir / 'index.rst')
+
+    # relative path
+    assert project.doc2path('index', basedir=False) == 'index.rst'