Refactor Testcases (#219)

* Refactor Testcases (#216)

* remove unused function

* add offer id tests

* add escrow id tests

* clang-format

* fix offer

* fix escrow

* fix offer test

Builds/levelization/results/loops.txt

@@ -49,6 +49,9 @@ Loop: ripple.nodestore ripple.overlay
 Loop: ripple.overlay ripple.rpc
   ripple.rpc ~= ripple.overlay
 
+Loop: test.app test.jtx
+  test.app > test.jtx
+
 Loop: test.jtx test.toplevel
   test.toplevel > test.jtx
 

Builds/levelization/results/ordering.txt

@@ -90,7 +90,6 @@ test.app > ripple.overlay
 test.app > ripple.protocol
 test.app > ripple.resource
 test.app > ripple.rpc
-test.app > test.jtx
 test.app > test.rpc
 test.app > test.toplevel
 test.app > test.unit_test