Improve x509xrite_csr testing: extensions, ECDSA
diff --git a/tests/data_files/server1.req.cert_type b/tests/data_files/server1.req.cert_type
new file mode 100644
index 0000000..5677f32
--- /dev/null
+++ b/tests/data_files/server1.req.cert_type
@@ -0,0 +1,17 @@
+-----BEGIN CERTIFICATE REQUEST-----
+MIICpTCCAY0CAQAwPDELMAkGA1UEBhMCTkwxETAPBgNVBAoTCFBvbGFyU1NMMRow
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+kPBVna0dze/o
+-----END CERTIFICATE REQUEST-----
diff --git a/tests/data_files/server1.req.key_usage b/tests/data_files/server1.req.key_usage
new file mode 100644
index 0000000..053aed9
--- /dev/null
+++ b/tests/data_files/server1.req.key_usage
@@ -0,0 +1,17 @@
+-----BEGIN CERTIFICATE REQUEST-----
+MIICnzCCAYcCAQAwPDELMAkGA1UEBhMCTkwxETAPBgNVBAoTCFBvbGFyU1NMMRow
+GAYDVQQDExFQb2xhclNTTCBTZXJ2ZXIgMTCCASIwDQYJKoZIhvcNAQEBBQADggEP
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+NalC
+-----END CERTIFICATE REQUEST-----
diff --git a/tests/data_files/server1.req.ku-ct b/tests/data_files/server1.req.ku-ct
new file mode 100644
index 0000000..0e057d5
--- /dev/null
+++ b/tests/data_files/server1.req.ku-ct
@@ -0,0 +1,17 @@
+-----BEGIN CERTIFICATE REQUEST-----
+MIICsjCCAZoCAQAwPDELMAkGA1UEBhMCTkwxETAPBgNVBAoTCFBvbGFyU1NMMRow
+GAYDVQQDExFQb2xhclNTTCBTZXJ2ZXIgMTCCASIwDQYJKoZIhvcNAQEBBQADggEP
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+RbC7nQn5HSHp31qJlr80QodywaK1Dg==
+-----END CERTIFICATE REQUEST-----
diff --git a/tests/data_files/server5.req.ku.sha1 b/tests/data_files/server5.req.ku.sha1
new file mode 100644
index 0000000..7556d1a
--- /dev/null
+++ b/tests/data_files/server5.req.ku.sha1
@@ -0,0 +1,8 @@
+-----BEGIN CERTIFICATE REQUEST-----
+MIIBFjCBvAIBADA8MQswCQYDVQQGEwJOTDERMA8GA1UEChMIUG9sYXJTU0wxGjAY
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+e5UejDX2CAIhAKdbigWJL/ZatvG9CFHq7ykrRns2x8JEXehWu8DsXdx9
+-----END CERTIFICATE REQUEST-----