Set port number for the embedded h2 database

Question

I use h2 in-memory database only for the testing purposes. The default port seems to be 8082, which causes my tests to fail on heroku.

I want to change this port number. How can I do that ?

What I've done so far:

1. There seems to be a file on my local machine ($USER_HOME/.h2.server.properties) that specifies this port. Let alone it is very strange to have that file outside of the application workspace, I cannot check it in heroku.

2. I tried to set webPort, port in application-test.properties (it is a properties file I use for my tests) but it didn't work (I tried different combinations server.port, `spring.data.source.h2.webPort, etc.)

application-test.properties

spring.datasource.url=jdbc:h2:mem:tesdb;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=
spring.datasource.testWhileIdle = true
spring.datasource.validationQuery = SELECT 1

build.gradle

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:1.5.8.RELEASE")
    }
}

apply plugin: 'java'

sourceCompatibility = 1.8
targetCompatibility = 1.8
tasks.withType(JavaCompile) {
    options.encoding = 'UTF-8'
}

test{

    forkEvery = 1
    testLogging {
        showStandardStreams = true
    }
}

repositories {
     maven { url "http://repo.maven.apache.org/maven2" }
}

dependencies {
    compile group: 'org.springframework.boot', name: 'spring-boot-starter-web', version:'1.5.8.RELEASE'
    compile group: 'org.springframework.boot', name: 'spring-boot-starter-data-jpa', version:'1.5.8.RELEASE'
    compile group: 'mysql', name: 'mysql-connector-java', version:'5.1.44'
    compile group: 'org.javassist', name: 'javassist', version:'3.18.0-GA'
    compile group: 'org.springframework.boot', name: 'spring-boot-starter-security', version:'1.5.8.RELEASE'
    compile group: 'org.springframework.security.oauth', name: 'spring-security-oauth2', version:'2.0.14.RELEASE'
    compile group: 'org.springframework.boot', name: 'spring-boot-configuration-processor', version:'1.5.8.RELEASE'
    compile group: 'io.jsonwebtoken', name: 'jjwt', version:'0.7.0'
    compile group: 'org.springframework.security', name: 'spring-security-cas', version:'4.2.3.RELEASE'
    compile group: 'org.springframework.security', name: 'spring-security-acl', version:'4.2.3.RELEASE'
    compile group: 'bsf', name: 'bsf', version:'2.4.0'
    compile group: 'org.springframework.boot', name: 'spring-boot-starter-batch', version:'1.5.8.RELEASE'
    compile group: 'org.springframework.boot', name: 'spring-boot-starter-actuator', version:'1.5.8.RELEASE'
    compile group: 'org.springframework.security', name: 'spring-security-ldap', version:'4.2.3.RELEASE'
    compile group: 'javax.jdo', name: 'jdo-api', version:'3.0.1'
    compile group: 'com.querydsl', name: 'querydsl-core', version:'4.1.4'
    compile group: 'org.springframework', name: 'springloaded', version:'1.2.8.RELEASE'
    compile group: 'org.springframework.boot', name: 'spring-boot-starter-data-rest', version:'1.5.8.RELEASE'
    compile group: 'org.jetbrains.kotlin', name: 'kotlin-stdlib', version:'1.0.6'
    compile group: 'org.scala-lang', name: 'scala-library', version:'2.11.0'
    compile group: 'commons-validator', name: 'commons-validator', version:'1.6'
    compile group: 'commons-io', name: 'commons-io', version:'2.5'
    compile group: 'org.springframework.boot', name: 'spring-boot-starter-jersey', version:'1.5.8.RELEASE'
    compile group: 'org.modelmapper', name: 'modelmapper', version:'0.7.5'
    compile(group: 'org.apache.httpcomponents', name: 'httpclient', version:'4.5.3') {
exclude(module: 'commons-logging')
    }
    compile group: 'org.apache.commons', name: 'commons-lang3', version:'3.4'
    compile(group: 'org.springframework.boot', name: 'spring-boot-starter-test', version:'1.5.8.RELEASE') {
exclude(module: 'commons-logging')
    }
    compile group: 'org.eclipse.jetty.aggregate', name: 'jetty-all', version:'9.2.13.v20150730'
    compile group: 'com.h2database', name: 'h2', version:'1.4.196'
    compile group: 'org.springframework.integration', name: 'spring-integration-test', version:'4.3.12.RELEASE'
    compile group: 'org.springframework.security', name: 'spring-security-test', version:'4.2.3.RELEASE'
    compile group: 'org.apache.hadoop', name: 'hadoop-core', version:'1.0.0'
    compile group: 'com.sleepycat', name: 'je', version:'5.0.73'
    compile group: 'commons-dbcp', name: 'commons-dbcp', version:'1.4'
    compile group: 'org.springframework', name: 'spring-webmvc', version:'4.3.12.RELEASE'
    compile group: 'org.springframework.data', name: 'spring-data-commons', version:'1.13.8.RELEASE'
    compile group: 'org.springframework.hateoas', name: 'spring-hateoas', version:'0.23.0.RELEASE'
    compile group: 'org.springframework.data', name: 'spring-data-rest-core', version:'2.6.8.RELEASE'
    compile group: 'org.springframework.plugin', name: 'spring-plugin-core', version:'1.2.0.RELEASE'
    compile group: 'org.springframework', name: 'spring-orm', version:'4.3.12.RELEASE'
    testCompile group: 'junit', name: 'junit', version:'4.11'
    testCompile group: 'org.springframework', name: 'spring-test', version:'4.3.12.RELEASE'
}

Answer 1

I found the solution. Earlier, I created a base class for my tests, where I create my H2 server. The port was set in the same class.

@BeforeClass
public static void init() throws SQLException {
    webServer = Server.createWebServer("-web", "-webAllowOthers", "-webPort", "8082");
    webServer.start();
}

But changing the port doesn't solve the problem. I found out that in contrary to how eclipse runs each test separately, heroku runs all of them once, so the server doesn't get destroyed and is kept alive between two tests. Therefore I have to kill the server after each test class is finished running:

@AfterClass
public static void tearDown() throws SQLException {
    webServer.stop();
}