diff --git a/libraries/DependencyLibrary.py b/libraries/DependencyLibrary.py
new file mode 100644
index 0000000..9d402af
--- /dev/null
+++ b/libraries/DependencyLibrary.py
@@ -0,0 +1,36 @@
+# Copyright 2019 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+from robot.libraries.BuiltIn import BuiltIn
+
+class DependencyLibrary(object):
+    ROBOT_LISTENER_API_VERSION = 2
+    ROBOT_LIBRARY_SCOPE = "GLOBAL"
+
+    def __init__(self):
+        self.ROBOT_LIBRARY_LISTENER = self
+        self.test_status = {}
+
+    def require_test_case(self, name):
+        key = name.lower()
+        if (key not in self.test_status):
+            BuiltIn().fail("required test case can't be found: '%s'" % name)
+
+        if (self.test_status[key] != "PASS"):
+            BuiltIn().fail("required test case failed: '%s'" % name)
+
+        return True
+
+    def _end_test(self, name, attrs):
+        self.test_status[name.lower()] = attrs["status"]