Spray-Json java.lang.OutOfMemoryError when calling parseJson - scala

Question

I'm using spray-json 1.3.0. I have a simple piece of Json that I am asking spray to parse, here it is
import org.scalatest.{FlatSpec, MustMatchers}
import spray.json._
class BlockCypherOutputMarshallerTest extends FlatSpec with MustMatchers {
val expectedOutput = """{"value":7454642,
|"script":"76a9148d5968ad26f9e277849ff9f8f39920f28944467388ac",
|"addresses":["mtQLgLiqmytKkgE9sVGwypAFsLvkxBQ6XX"],
|"script_type":"pay-to-pubkey-hash}""".stripMargin
val json = expectedOutput.parseJson
"BlockCypherOutputMarshaller" must "parse an output from the blockcypher api" in {
//test case
}
}
however I am getting an error message on the line that val json = expectedOutput.parseJson is called. Here is the error message
> last test:testOnly
[debug] Running TaskDef(com.blockcypher.api.marshallers.BlockCypherOutputMarshallerTest, org.scalatest.tools.Framework$$anon$1#4178c07b, false, [SuiteSelector])
java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Arrays.java:3332)
at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:137)
at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:121)
at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:622)
at java.lang.StringBuilder.append(StringBuilder.java:202)
at spray.json.JsonParser.appendSB(JsonParser.scala:179)
at spray.json.JsonParser.char(JsonParser.scala:138)
at spray.json.JsonParser.string(JsonParser.scala:129)
at spray.json.JsonParser.value(JsonParser.scala:62)
at spray.json.JsonParser.members$1(JsonParser.scala:80)
at spray.json.JsonParser.object(JsonParser.scala:84)
at spray.json.JsonParser.value(JsonParser.scala:59)
at spray.json.JsonParser.parseJsValue(JsonParser.scala:43)
at spray.json.JsonParser$.apply(JsonParser.scala:28)
at spray.json.PimpedString.parseJson(package.scala:45)
at com.blockcypher.api.marshallers.BlockCypherOutputMarshallerTest.<init>(BlockCypherOutputMarshallerTest.scala:16)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
at java.lang.Class.newInstance(Class.java:442)
at org.scalatest.tools.Framework$ScalaTestTask.execute(Framework.scala:641)
at sbt.TestRunner.runTest$1(TestFramework.scala:76)
at sbt.TestRunner.run(TestFramework.scala:85)
at sbt.TestFramework$$anon$2$$anonfun$$init$$1$$anonfun$apply$8.apply(TestFramework.scala:202)
at sbt.TestFramework$$anon$2$$anonfun$$init$$1$$anonfun$apply$8.apply(TestFramework.scala:202)
at sbt.TestFramework$.sbt$TestFramework$$withContextLoader(TestFramework.scala:185)
at sbt.TestFramework$$anon$2$$anonfun$$init$$1.apply(TestFramework.scala:202)
at sbt.TestFramework$$anon$2$$anonfun$$init$$1.apply(TestFramework.scala:202)
at sbt.TestFunction.apply(TestFramework.scala:207)
at sbt.Tests$$anonfun$9.apply(Tests.scala:216)
at sbt.Tests$$anonfun$9.apply(Tests.scala:216)
[error] Could not run test com.blockcypher.api.marshallers.BlockCypherOutputMarshallerTest: java.lang.OutOfMemoryError: Java heap space
[debug] Summary for ScalaCheck not available.
[debug] Summary for specs2 not available.
[info] ScalaTest
[info] Run completed in 1 second, 541 milliseconds.
[info] Total number of tests run: 0
[info] Suites: completed 0, aborted 0
[info] Tests: succeeded 0, failed 0, canceled 0, ignored 0, pending 0
[info] No tests were executed.
[error] Error: Total 0, Failed 0, Errors 0, Passed 0
[error] Error during tests:
[error] com.blockcypher.api.marshallers.BlockCypherOutputMarshallerTest
[error] (test:testOnly) sbt.TestsFailedException: Tests unsuccessful
I'm unsure of why I am running out of heap space, it seems that the piece of json is simple enough and I am not having any issues on any other similar size json test cases.

Answer 1

You need to close quote in your last line "pay-to-pubkey-hash
"script_type":"pay-to-pubkey-hash}"""
should be
"script_type":"pay-to-pubkey-hash"}"""