add unit tests for libjwt.split function parameter validation

Author: infezek

test/split_test.lua

@@ -0,0 +1,58 @@
+local lu = require('luaunit')
+local libjwt = require('../lib/resty/libjwt')
+
+
+function TestShouldReturnErrorBecauseIsNotStringOfParam()
+    local result, err = libjwt.split(1, ",")
+    lu.assertEquals(err, "param should be a string" )
+    lu.assertEquals(result, nil )
+
+    local result, err = libjwt.split(nil)
+    lu.assertEquals(err, "param is required" )
+    lu.assertEquals(result, nil )
+
+    local result, err = libjwt.split({}, ",")
+    lu.assertEquals(err, "param should be a string" )
+    lu.assertEquals(result, nil )
+end
+
+function TestShouldReturnErrorBecauseIsNotStringOfSeparator()
+    local result, err = libjwt.split("123456", 1)
+    lu.assertEquals(err, "separator should be a string" )
+    lu.assertEquals(result, nil )
+
+    local result, err = libjwt.split("123456", {})
+    lu.assertEquals(err, "separator should be a string" )
+    lu.assertEquals(result, nil )
+
+    local result, err = libjwt.split("123456", "")
+    lu.assertEquals(err, "separator should be a string" )
+    lu.assertEquals(result, nil )
+end
+
+
+function TestShouldNotReturnErrorWithValidParameters()
+    local result, err = libjwt.split("123456", ",")
+    lu.assertEquals(err, "" )
+    lu.assertEquals(result, {"123456"} )
+
+    local result, err = libjwt.split("123 456", ",")
+    lu.assertEquals(err, "" )
+    lu.assertEquals(result, {"123 456"} )
+
+    local result, err = libjwt.split("123 456", " ")
+    lu.assertEquals(err, "" )
+    lu.assertEquals(result, {"123","456"} )
+
+    local result, err = libjwt.split("123;456", ";")
+    lu.assertEquals(err, "" )
+    lu.assertEquals(result, {"123","456"} )
+
+    local result, err = libjwt.split("000; 123", ";")
+    lu.assertEquals(err, "" )
+    lu.assertEquals(result, {"000"," 123"} )
+end
+
+
+
+os.exit( lu.LuaUnit.run() )