add test for missing eservice binding

[kynetiv]

paired with @yozlet to add test for #284
finishes #284

[yozlet]

This is currently failing in CircleCI; @kynetiv is looking into it.

[kynetiv]

This specific test passes individually, but after a previous test's DataMagic.init call, need to clear out a set class variable (client) that we rely on being unset. Or perhaps reorder the tests a bit here.