Adds unit test to the JSON parser

Unit test to test whenever the JSON parser is enabled

tests/regression/rule/15-json.t

@@ -0,0 +1,39 @@
+### Test for JSON parser
+
+### 
+# OK
+{
+	type => "rule",
+	comment => "json parser",
+	conf => qq(
+		SecRuleEngine On
+		SecRequestBodyAccess On
+		SecDebugLog $ENV{DEBUG_LOG}
+		SecDebugLogLevel 9
+		SecRule REQUEST_HEADERS:Content-Type "application/json" \\
+		     "id:'200001',phase:1,t:none,t:lowercase,pass,nolog,ctl:requestBodyProcessor=JSON"
+		SecRule ARGS:foo "bar" "id:'200441',phase:3,log"
+	),
+	match_log => {
+		error => [ qr/ModSecurity: Warning. Pattern match "bar" at ARGS:foo.|ModSecurity: JSON support was not enabled/s, 1 ],
+		debug => [ qr/Adding JSON argument 'foo' with value 'bar'|JSON support was not enabled/, 1 ],
+	},
+	match_response => {
+		status => qr/^200$/,
+	},
+	request => new HTTP::Request(
+		POST => "http://$ENV{SERVER_NAME}:$ENV{SERVER_PORT}/test.txt",
+		[
+			"Content-Type" => "application/json",
+		],
+		normalize_raw_request_data(
+			q(
+				{
+					"foo":"bar",
+					"mod":"sec"
+				}
+			),
+		),
+	),
+}
+