Fix reading of extras in lock file

poetry/packages/locker.py

@@ -92,7 +92,7 @@ class Locker(object):
                     package.extras[name] = []
 
                     for dep in deps:
-                        m = re.match(r"^(.+)(?=\s+\((.+)\))?$", dep)
+                        m = re.match(r"^(.+?)(?:\s+\((.+)\))?$", dep)
                         dep_name = m.group(1)
                         constraint = m.group(2) or "*"
 

tests/installation/test_installer.py

@@ -1341,3 +1341,35 @@ def test_installer_required_extras_should_not_be_removed_when_updating_single_de
     assert len(installer.installer.installs) == 6 if not PY2 else 7
     assert len(installer.installer.updates) == 0
     assert len(installer.installer.removals) == 0
+
+
+def test_installer_required_extras_should_be_installed(
+    locker, repo, package, installed, env, mocker
+):
+    pool = Pool()
+    pool.add_repository(MockRepository())
+
+    installer = Installer(NullIO(), env, package, locker, pool, installed=installed)
+
+    package.add_dependency(
+        "cachecontrol", {"version": "^0.12.5", "extras": ["filecache"]}
+    )
+
+    installer.update(True)
+    installer.run()
+
+    assert len(installer.installer.installs) == 2
+    assert len(installer.installer.updates) == 0
+    assert len(installer.installer.removals) == 0
+
+    locker.locked(True)
+    locker.mock_lock_data(locker.written_data)
+
+    installer = Installer(NullIO(), env, package, locker, pool, installed=installed)
+
+    installer.update(True)
+    installer.run()
+
+    assert len(installer.installer.installs) == 2
+    assert len(installer.installer.updates) == 0
+    assert len(installer.installer.removals) == 0

tests/packages/test_locker.py

 import pytest
 import tempfile
 
+import tomlkit
+
 from poetry.packages.locker import Locker
 from poetry.packages.project_package import ProjectPackage
 
@@ -61,3 +63,47 @@ B = []
 """
 
     assert expected == content
+
+
+def test_locker_properly_loads_extras(locker):
+    content = """\
+[[package]]
+category = "main"
+description = "httplib2 caching for requests"
+name = "cachecontrol"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "0.12.5"
+
+[package.dependencies]
+msgpack = "*"
+requests = "*"
+
+[package.dependencies.lockfile]
+optional = true
+version = ">=0.9"
+
+[package.extras]
+filecache = ["lockfile (>=0.9)"]
+redis = ["redis (>=2.10.5)"]
+
+[metadata]
+content-hash = "c3d07fca33fba542ef2b2a4d75bf5b48d892d21a830e2ad9c952ba5123a52f77"
+python-versions = "~2.7 || ^3.4"
+
+[metadata.hashes]
+cachecontrol = []
+"""
+
+    locker.lock.write(tomlkit.parse(content))
+
+    packages = locker.locked_repository().packages
+
+    assert 1 == len(packages)
+
+    package = packages[0]
+    assert 3 == len(package.requires)
+    assert 2 == len(package.extras)
+
+    lockfile_dep = package.extras["filecache"][0]
+    assert lockfile_dep.name == "lockfile"