Switch travis to using invoke tasks

.travis.yml

@@ -6,11 +6,11 @@ python:
   - "3.3"
   - "pypy"
 install:
-  - sudo tests/install_sodium.sh
-  - pip install -q "file://$PWD#egg=pynacl[tests]"
+  - /usr/bin/pip install git+git://github.com/pyinvoke/invoke.git
+  - 'if [ -n "${VAR+x}" ]; then: invoke install-nacl --library=$NACL; fi'
+  - 'if [ -n "${VAR+x}" ]; then: invoke install --dev; fi'
 script:
-  - pep8 nacl
-  - pylint --rcfile .pylintrc -r y nacl
-  - py.test
+  - invoke tests --suite=$SUITE --libpath=/usr/local/lib
 env:
-  - LD_LIBRARY_PATH=/usr/local/lib LD_RUN_PATH=/usr/local/lib
+  - NACL=libsodium SUITE=unit
+  - "SUITE=pep8,lint"

tasks.py

+import hashlib
+import os
+import urllib2
+
+from invoke import task, run
+
+
+def download(url, hash, path):
+    resp = urllib2.urlopen(url)
+    content = resp.read()
+    content_hash = hashlib.sha256(content).hexdigest()
+    assert hash == content_hash
+
+    with open(path, "wb") as fp:
+        fp.write(content)
+
+
+@task(aliases=["install-nacl"])
+def install_nacl(library):
+    def _install_libsodium():
+        tarball_path = os.path.expanduser("~/libsodium-0.2.tar.gz")
+
+        # Download libsodium and verify it's hash
+        download(
+            "http://download.dnscrypt.org/libsodium/releases/libsodium-0.2.tar.gz",
+            "e99a6b69adc080a5acf6b8a49fdc74b61d6f3579b590e85c93446a8325dde100",
+            tarball_path,
+        )
+
+        curdir = os.getcwd()
+        try:
+            os.chdir(os.path.expanduser("~/"))
+
+            # Unpack the tarball
+            run("tar xf libsodium-0.2.tar.gz")
+
+            # Configure and install the library
+            os.chdir(os.path.expanduser("~/libsodium-0.2/"))
+            run("./configure --disable-debug --disable-dependency-tracking")
+            run("make")
+            run("make check")
+            run("make install")
+        finally:
+            os.chdir(curdir)
+
+    def _install_nacl():
+        raise NotImplementedError
+
+    libraries = {
+        "libsodium": _install_libsodium,
+        "nacl": _install_nacl,
+    }
+
+    # Install the library
+    libraries[library]()
+
+
+@task
+def install(dev=False):
+    cmd = "pip install -e file://$PWD#egg=pynacl"
+
+    if dev:
+        cmd += "[tests]"
+
+    run(cmd)
+
+
+@task
+def tests(libpath=None, suite=None):
+    if libpath is not None:
+        os.environ["LD_LIBRARY_PATH"] = libpath
+        os.environ["LD_RUN_PATH"] = libpath
+
+    if suite is None:
+        suite = set(["pep8", "lint", "unit"])
+    else:
+        suite = set(suite.split(","))
+
+    if "pep8" in suite:
+        run("pep8 nacl")
+
+    if "lint" in suite:
+        run("pylint --rcfile .pylintrc -r y nacl")
+
+    if "unit" in suite:
+        run("py.test")