add cargo test support

CHANGES.rst

@@ -1,9 +1,11 @@
 CHANGES
 =======
 
-0.5.1 (2017-04-xx)
+0.5.1 (2017-05-xx)
 ------------------
 
+- Added support for "cargo test"
+
 - Fixed unbound method type error #4
 
 

setup.py

@@ -1,6 +1,6 @@
 from setuptools import setup
 
-version = '0.5.0'
+version = '0.5.1'
 
 
 setup(
@@ -37,5 +37,6 @@
     clean_rust=setuptools_rust:clean_rust
     build_ext=setuptools_rust:build_ext
     build_rust=setuptools_rust:build_rust
+    test_rust=setuptools_rust:test_rust
     """
 )

setuptools_rust/__init__.py

@@ -5,10 +5,11 @@
 from .build_ext import build_ext
 from .check import check_rust
 from .clean import clean_rust
+from .test import test_rust
 from .extension import RustExtension
 
 __all__ = ('RustExtension',
-           'check_rust', 'clean_rust', 'build_ext', 'build_rust')
+           'check_rust', 'clean_rust', 'build_ext', 'build_rust', 'test_rust')
 
 
 patch.monkey_patch_dist(build_ext)

setuptools_rust/test.py

@@ -0,0 +1,81 @@
+from __future__ import print_function, absolute_import
+import os
+import sys
+import subprocess
+from distutils.cmd import Command
+from distutils.errors import (
+    CompileError, DistutilsFileError, DistutilsExecError)
+
+import semantic_version
+
+from .extension import RustExtension
+from .utils import cpython_feature, get_rust_version
+
+MIN_VERSION = semantic_version.Spec('>=1.15')
+
+
+class test_rust(Command):
+    """ Run cargo test"""
+
+    description = "test rust extensions"
+
+    user_options = []
+
+    def initialize_options(self):
+        self.extensions = ()
+
+    def finalize_options(self):
+        self.extensions = [ext for ext in self.distribution.rust_extensions
+                           if isinstance(ext, RustExtension)]
+
+    def run(self):
+        if not self.extensions:
+            return
+
+        version = get_rust_version()
+        if version not in MIN_VERSION:
+            print('Rust version mismatch: required rust%s got rust%s' % (
+                MIN_VERSION,  version))
+            return
+
+        # Make sure that if pythonXX-sys is used, it builds against the current
+        # executing python interpreter.
+        bindir = os.path.dirname(sys.executable)
+
+        env = os.environ.copy()
+        env.update({
+            # disables rust's pkg-config seeking for specified packages,
+            # which causes pythonXX-sys to fall back to detecting the
+            # interpreter from the path.
+            "PYTHON_2.7_NO_PKG_CONFIG": "1",
+            "PATH":  bindir + os.pathsep + os.environ.get("PATH", "")
+        })
+
+        for ext in self.extensions:
+            if not os.path.exists(ext.path):
+                raise DistutilsFileError(
+                    "Can not file rust extension project file: %s" % ext.path)
+
+            features = set(ext.features)
+            features.update(cpython_feature(ext=False))
+
+            # build cargo command
+            args = (["cargo", "test", "--manifest-path", ext.path,
+                     "--features", " ".join(features)]
+                    + list(ext.args or []))
+
+            # Execute cargo command
+            print(' '.join(args))
+            try:
+                subprocess.check_output(args)
+            except subprocess.CalledProcessError as e:
+                raise CompileError(
+                    "cargo failed with code: %d\n%s" % (
+                        e.returncode, e.output.decode("utf-8")))
+            except OSError:
+                raise DistutilsExecError(
+                    "Unable to execute 'cargo' - this package "
+                    "requires rust to be installed and "
+                    "cargo to be on the PATH")
+            else:
+                print("Test has been completed for '%s' extension" % ext.name)

setuptools_rust/utils.py

@@ -6,12 +6,18 @@
 import semantic_version
 
 
-def cpython_feature():
+def cpython_feature(ext=True):
     version = sys.version_info
     if (2, 7) < version < (2, 8):
-        return ("cpython/python27-sys", "cpython/extension-module-2-7")
+        if ext:
+            return ("cpython/python27-sys", "cpython/extension-module-2-7")
+        else:
+            return ("cpython/python27-sys",)
     elif (3, 3) < version:
-        return ("cpython/python3-sys", "cpython/extension-module")
+        if ext:
+            return ("cpython/python3-sys", "cpython/extension-module")
+        else:
+            return ("cpython/python3-sys",)
     else:
         raise DistutilsPlatformError(
             "Unsupported python version: %s" % sys.version)