diff --git a/tests/unit-tests/config-files/config-ca-1 b/tests/unit-tests/config-files/config-ca-1
new file mode 100644
index 0000000..8ea5d38
--- /dev/null
+++ b/tests/unit-tests/config-files/config-ca-1
@@ -0,0 +1,14 @@
+{
+  "ca-prefix": "/ndn",
+  "ca-info": "ndn testbed ca",
+  "max-validity-period": "864000",
+  "max-suffix-length": 3,
+  "probe-parameters":
+  [
+      { "probe-parameter-key": "full name" }
+  ],
+  "supported-challenges":
+  [
+      { "challenge": "PIN" }
+  ]
+}
\ No newline at end of file
diff --git a/tests/unit-tests/config-files/config-ca-2 b/tests/unit-tests/config-files/config-ca-2
new file mode 100644
index 0000000..9b7c2bd
--- /dev/null
+++ b/tests/unit-tests/config-files/config-ca-2
@@ -0,0 +1,9 @@
+{
+  "ca-prefix": "/ndn",
+  "ca-info": "missing max validity period, max suffix length, and probe",
+  "supported-challenges":
+  [
+      { "challenge": "pin" },
+      { "challenge": "email" }
+  ]
+}
\ No newline at end of file
diff --git a/tests/unit-tests/config-files/config-ca-3 b/tests/unit-tests/config-files/config-ca-3
new file mode 100644
index 0000000..7946ca0
--- /dev/null
+++ b/tests/unit-tests/config-files/config-ca-3
@@ -0,0 +1,10 @@
+{
+  "ca-prefix": "/ndn",
+  "ca-info": "missing challenge",
+  "max-validity-period": "86400",
+  "max-suffix-length": 3,
+  "probe-parameters":
+  [
+      { "probe-parameter-key": "full name" }
+  ]
+}
\ No newline at end of file
diff --git a/tests/unit-tests/config-files/config-ca-4 b/tests/unit-tests/config-files/config-ca-4
new file mode 100644
index 0000000..98d6c92
--- /dev/null
+++ b/tests/unit-tests/config-files/config-ca-4
@@ -0,0 +1,14 @@
+{
+  "ca-prefix": "/ndn",
+  "ca-info": "unsupported challenge",
+  "max-validity-period": "86400",
+  "max-suffix-length": 3,
+  "probe-parameters":
+  [
+      { "probe-parameter-key": "full name" }
+  ],
+  "supported-challenges":
+  [
+      { "challenge": "something" }
+  ]
+}
\ No newline at end of file
diff --git a/tests/unit-tests/config-files/config-client-1 b/tests/unit-tests/config-files/config-client-1
new file mode 100644
index 0000000..20daad1
--- /dev/null
+++ b/tests/unit-tests/config-files/config-client-1
@@ -0,0 +1,20 @@
+{
+  "ca-list":
+  [
+    {
+        "ca-prefix": "/ndn/edu/ucla",
+        "ca-info": "ndn testbed ca",
+        "max-validity-period": "864000",
+        "max-suffix-length": 3,
+        "probe-parameters":
+        [
+          { "probe-parameter-key": "email" }
+        ],
+        "certificate": "Bv0CJAcsCANuZG4IBXNpdGUxCANLRVkICBG8IvRjFf8XCARzZWxmCAn9AAABWcgU2aUUCRgBAhkEADbugBX9AU8wggFLMIIBAwYHKoZIzj0CATCB9wIBATAsBgcqhkjOPQEBAiEA/////wAAAAEAAAAAAAAAAAAAAAD///////////////8wWwQg/////wAAAAEAAAAAAAAAAAAAAAD///////////////wEIFrGNdiqOpPns+u9VXaYhrxlHQawzFOw9jvOPD4n0mBLAxUAxJ02CIbnBJNqZnjhE50mt4GffpAEQQRrF9Hy4SxCR/i85uVjpEDydwN9gS3rM6D0oTlF2JjClk/jQuL+Gn+bjufrSnwPnhYrzjNXazFezsu2QGg3v1H1AiEA/////wAAAAD//////////7zm+q2nF56E87nKwvxjJVECAQEDQgAES9Cb9iANUNYmwt5bjwNW1mZgjzIkDJb6FTCdiYWnkMMIVxh2YDllphoWDEAPS6kqJczzCuhnGYpZCp9tTaYKGxZMGwEDHB0HGwgDbmRuCAVzaXRlMQgDS0VZCAgRvCL0YxX/F/0A/Sb9AP4PMTk3MDAxMDFUMDAwMDAw/QD/DzIwMzcwMTE3VDIxMjg0NhdIMEYCIQDXkR1hF3GiP7yLXq+0JBJfi9QC+hhAu/1Bykx+MWz6RAIhANwelBTxxZr2C5bD15mjfhWudK4I1tOb4b/9xWCHyM7F"
+    },
+    {
+        "ca-prefix": "/ndn/edu/ucla/zhiyi",
+        "certificate": "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"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/tests/unit-tests/config-files/config-client-2 b/tests/unit-tests/config-files/config-client-2
new file mode 100644
index 0000000..4eb3958
--- /dev/null
+++ b/tests/unit-tests/config-files/config-client-2
@@ -0,0 +1,13 @@
+{
+  "ca-list":
+  [
+    {
+        "ca-prefix": "/ndn/edu/ucla",
+        "ca-info": "missing certificate",
+        "probe-parameters":
+        [
+          { "probe-parameter-key": "email" }
+        ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/tests/unit-tests/config-files/config-client-3 b/tests/unit-tests/config-files/config-client-3
new file mode 100644
index 0000000..66ec4b6
--- /dev/null
+++ b/tests/unit-tests/config-files/config-client-3
@@ -0,0 +1,13 @@
+{
+  "ca-list":
+  [
+    {
+        "ca-info": "missing ca prefix",
+        "probe-parameters":
+        [
+          { "probe-parameter-key": "email" }
+        ],
+        "certificate": "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"
+    }
+  ]
+}
\ No newline at end of file