some minimal pkcs7 and pkcs12 tests, and minor adjustments to their part of OpenSSL.crypto module initialization; change NetscapeSPKI to be a type that can be instantiated, and add a very minimal amount of testing for it
diff --git a/test/test_crypto.py b/test/test_crypto.py
index 87e9048..d83218b 100644
--- a/test/test_crypto.py
+++ b/test/test_crypto.py
@@ -15,6 +15,9 @@
 from OpenSSL.crypto import FILETYPE_PEM, FILETYPE_ASN1, FILETYPE_TEXT
 from OpenSSL.crypto import dump_certificate, load_certificate_request
 from OpenSSL.crypto import dump_certificate_request, dump_privatekey
+from OpenSSL.crypto import PKCS7Type, load_pkcs7_data
+from OpenSSL.crypto import PKCS12Type, load_pkcs12
+from OpenSSL.crypto import NetscapeSPKI, NetscapeSPKIType
 
 
 cleartextCertificatePEM = """-----BEGIN CERTIFICATE-----
@@ -88,6 +91,85 @@
 """
 encryptedPrivateKeyPEMPassphrase = "foobar"
 
+# Some PKCS12 data, base64 encoded.  The data itself was constructed using the
+# openssl command line:
+#
+#    openssl pkcs12 -export -in s.pem -out o.p12 -inkey s.pem -certfile s.pem
+#
+# With s.pem containing a private key and certificate.  The contents of the
+# generated file, o.p12, were then base64 encoded to produce this value.
+pkcs12Data = """\
+MIIJGQIBAzCCCN8GCSqGSIb3DQEHAaCCCNAEggjMMIIIyDCCBucGCSqGSIb3DQEHBqCCBtgwggbU
+AgEAMIIGzQYJKoZIhvcNAQcBMBwGCiqGSIb3DQEMAQYwDgQIdwchN+KDjC8CAggAgIIGoOh59lWQ
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+N5cCAggABIIBYD2z0NOajj7NlnWDRO8hlRiDIo8UTZ3E2UjP4rSbKh7ZLGULHALuH+gcwD3814U7
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+7lcwMTAhMAkGBSsOAwIaBQAEFBxVa/flSZttaXvzg+oLJBqgUWuVBAh0s4gPVAEKHAICCAA=
+""".decode('base64')
+
+# Some PKCS#7 stuff.  Generated with the openssl command line:
+#
+#    openssl crl2pkcs7 -inform pem -outform pem -certfile s.pem -nocrl
+#
+# with a certificate and key (but the key should be irrelevant) in s.pem
+pkcs7Data = """\
+-----BEGIN PKCS7-----
+MIIDNwYJKoZIhvcNAQcCoIIDKDCCAyQCAQExADALBgkqhkiG9w0BBwGgggMKMIID
+BjCCAm+gAwIBAgIBATANBgkqhkiG9w0BAQQFADB7MQswCQYDVQQGEwJTRzERMA8G
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+Ho4EzbYCOaEAMQA=
+-----END PKCS7-----
+"""
+
 
 class _Python23TestCaseHelper:
     # Python 2.3 compatibility.
@@ -814,5 +896,37 @@
         self.assertEqual(loadedKey.bits(), key.bits())
 
 
+    def test_load_pkcs7_data(self):
+        """
+        L{load_pkcs7_data} accepts a PKCS#7 string and returns an instance of
+        L{PKCS7Type}.
+        """
+        pkcs7 = load_pkcs7_data(FILETYPE_PEM, pkcs7Data)
+        self.assertTrue(isinstance(pkcs7, PKCS7Type))
+
+
+    def test_load_pkcs12(self):
+        """
+        L{load_pkcs12} accepts a PKCS#12 string and returns an instance of
+        L{PKCS12Type}.
+        """
+        pkcs12 = load_pkcs12(pkcs12Data)
+        self.assertTrue(isinstance(pkcs12, PKCS12Type))
+
+
+
+class NetscapeSPKITests(TestCase):
+    """
+    Tests for L{OpenSSL.crypto.NetscapeSPKI}.
+    """
+    def test_construction(self):
+        """
+        L{NetscapeSPKI} returns an instance of L{NetscapeSPKIType}.
+        """
+        nspki = NetscapeSPKI()
+        self.assertTrue(isinstance(nspki, NetscapeSPKIType))
+
+
+
 if __name__ == '__main__':
     main()