diff --git a/etor/src/test/groovy/gov/hhs/cdc/trustedintermediary/external/hapi/HapiFhirEngineImplementationTest.groovy b/etor/src/test/groovy/gov/hhs/cdc/trustedintermediary/external/hapi/HapiFhirEngineImplementationTest.groovy
index 95dc989ad..268a1f8c9 100644
--- a/etor/src/test/groovy/gov/hhs/cdc/trustedintermediary/external/hapi/HapiFhirEngineImplementationTest.groovy
+++ b/etor/src/test/groovy/gov/hhs/cdc/trustedintermediary/external/hapi/HapiFhirEngineImplementationTest.groovy
@@ -1,55 +1,127 @@
 package gov.hhs.cdc.trustedintermediary.external.hapi
 
-
 import gov.hhs.cdc.trustedintermediary.context.TestApplicationContext
 import gov.hhs.cdc.trustedintermediary.wrappers.HapiFhirEngine
+import org.hl7.fhir.instance.model.api.IBaseResource
+import org.hl7.fhir.r4.model.Bundle
+import org.hl7.fhir.r4.utils.FHIRLexer
 import spock.lang.Specification
 
 // @todo build actual tests this is a skeleton
 class HapiFhirEngineImplementationTest extends Specification {
     HapiFhirEngine engine
+    Bundle bundle
 
     def setup() {
         TestApplicationContext.reset()
         TestApplicationContext.init()
         TestApplicationContext.injectRegisteredImplementations()
 
-        engine = new HapiFhirEngineImplementation() as HapiFhirEngine
+        engine = new HapiFhirEngineImplementation()
+
+        bundle = new Bundle()
+        bundle.id = "abc123"
     }
 
     def cleanup() {
     }
 
-    def "superbasic"() {
+    def "parsePath returns null on blank"() {
         given:
-        def expectedResult = null
+        def path = ""
 
         when:
-        def actualResult = null
+        def result = engine.parsePath(path)
 
         then:
-        actualResult === expectedResult
+        result == null
     }
 
-    def "parsePath returns null on blank"() {
+    def "parsePath returns not null on a valid"() {
         given:
-        def expectedResult = null
+        def path = "Bundle.entry.resource.ofType(MessageHeader)"
 
         when:
-        def actualResult = engine.parsePath("")
+        def result = engine.parsePath(path)
 
         then:
-        actualResult == expectedResult
+        result != null
     }
 
     def "parsePath returns not null on a valid"() {
         given:
-        def expectedResult = null
+        def path = "%resource.contact.relationship.first().coding.exists()"
 
         when:
-        def result = engine.parsePath("Bundle.entry.resource.ofType(MessageHeader)")
+        def result = engine.parsePath(path)
 
         then:
         result != null
     }
+
+    def "parsePath throws FHIRLexerException on fake method"() {
+        given:
+        def path = "Bundle.entry.resource.BADMETHOD(MessageHeader)"
+
+        when:
+        engine.parsePath(path)
+
+        then:
+        thrown(FHIRLexer.FHIRLexerException)
+    }
+
+    def "parsePath throws FHIRLexerException on bad syntax"() {
+        given:
+        def path = "Bundle...entry.resource.ofType(MessageHeader)"
+
+        when:
+        engine.parsePath(path)
+
+        then:
+        thrown(FHIRLexer.FHIRLexerException)
+    }
+
+    def "evaluateCondition returns true on finding existing value"() {
+        given:
+        def path = "Bundle.id.exists()"
+
+        when:
+        def result = engine.evaluateCondition(bundle as IBaseResource, path)
+
+        then:
+        result == true
+    }
+
+    def "evaluateCondition returns false on not finding non-existing value"() {
+        given:
+        def path = "Bundle.timestamp.exists()"
+
+        when:
+        def result = engine.evaluateCondition(bundle as IBaseResource, path)
+
+        then:
+        result == false
+    }
+
+    def "evaluateCondition returns false on not finding matching extension"() {
+        given:
+        def path = "Bundle.entry[0].resource.extension('blah')"
+
+        when:
+        def result = engine.evaluateCondition(bundle as IBaseResource, path)
+
+        then:
+        result == false
+    }
+
+    def "evaluateCondition returns false on empty string"() {
+        given:
+        def path = ""
+
+        when:
+        def result = engine.evaluateCondition(bundle as IBaseResource, path)
+
+        then:
+        result == false
+    }
 }