Added Jacoco code coverage to gradle.

build.gradle

@@ -8,6 +8,9 @@ apply plugin: QuasarPlugin
 apply plugin: 'com.github.ben-manes.versions'
 
 allprojects {
+    apply plugin: 'java'
+    apply plugin: 'jacoco'
+
     sourceCompatibility = 1.8
     targetCompatibility = 1.8
 
@@ -16,6 +19,23 @@ allprojects {
     }
 }
 
+subprojects {
+    dependencies {
+        testCompile 'junit:junit:4.12'
+    }
+
+    jacocoTestReport {
+        additionalSourceDirs = files(sourceSets.main.allSource.srcDirs)
+        sourceDirectories = files(sourceSets.main.allSource.srcDirs)
+        classDirectories =  files(sourceSets.main.output)
+        reports {
+            html.enabled = true
+            xml.enabled = true
+            csv.enabled = false
+        }
+    }
+}
+
 buildscript {
     ext.kotlin_version = '1.0.3'
     ext.quasar_version = '0.7.5'
@@ -166,3 +186,24 @@ applicationDistribution.into("bin") {
     from(getTraderDemo)
     fileMode = 0755
 }
+
+task jacocoRootReport(type: org.gradle.testing.jacoco.tasks.JacocoReport) {
+    dependsOn = subprojects.test
+    additionalSourceDirs = files(subprojects.sourceSets.main.allSource.srcDirs)
+    sourceDirectories = files(subprojects.sourceSets.main.allSource.srcDirs)
+    classDirectories = files(subprojects.sourceSets.main.output)
+    executionData = files(subprojects.jacocoTestReport.executionData)
+    reports {
+        html.enabled = true
+        xml.enabled = true
+        csv.enabled = false
+    }
+    onlyIf = {
+        true
+    }
+    doFirst {
+        executionData = files(executionData.findAll {
+            it.exists()
+        })
+    }
+}

core/src/main/kotlin/com/r3corda/core/Utils.kt

@@ -114,7 +114,7 @@ fun <T> Iterable<T>.noneOrSingle(): T? {
 // An alias that can sometimes make code clearer to read.
 val RunOnCallerThread = MoreExecutors.directExecutor()
 
-inline fun <T> logElapsedTime(label: String, logger: Logger? = null, body: () -> T): T {
+fun <T> logElapsedTime(label: String, logger: Logger? = null, body: () -> T): T {
     val now = System.currentTimeMillis()
     val r = body()
     val elapsed = System.currentTimeMillis() - now