GRPC_PORT environment variable test

Author: Alexander Furer

build.gradle

@@ -41,6 +41,7 @@ subprojects {
     sourceCompatibility = 1.8
     targetCompatibility = 1.8
     test {
+        forkEvery = 1
         testLogging {
             exceptionFormat = 'full'
         }

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,6 @@
+#Wed Sep 12 11:15:37 IDT 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10-all.zip

grpc-spring-boot-starter-demo/build.gradle

@@ -7,7 +7,6 @@ buildscript {
         classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBoot_1_X_Version}")
     }
 }
-
 apply plugin: 'com.google.protobuf'
 apply plugin: 'org.springframework.boot'
 
@@ -20,7 +19,8 @@ dependencies {
     compile project(':grpc-spring-boot-starter')
 
     testCompile 'org.springframework.boot:spring-boot-starter-aop'
-    testCompile('org.springframework.boot:spring-boot-starter-test')
+    testCompile 'org.springframework.boot:spring-boot-starter-test'
+    testCompile 'com.github.stefanbirkner:system-rules:1.18.0'
 }
 sourceSets {
     main {

grpc-spring-boot-starter-demo/src/test/java/org/lognet/springboot/grpc/EnvVarGrpcPortTest.java

@@ -0,0 +1,51 @@
+package org.lognet.springboot.grpc;
+
+import org.junit.AfterClass;
+import org.junit.Assert;
+import org.junit.ClassRule;
+import org.junit.contrib.java.lang.system.EnvironmentVariables;
+import org.junit.runner.RunWith;
+import org.lognet.springboot.grpc.context.LocalRunningGrpcPort;
+import org.lognet.springboot.grpc.demo.DemoApp;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.util.SocketUtils;
+
+import static org.springframework.boot.test.context.SpringBootTest.WebEnvironment.NONE;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = {DemoApp.class}, webEnvironment = NONE)
+public class EnvVarGrpcPortTest extends GrpcServerTestBase {
+
+
+    private static int randomPort;
+    private static EnvironmentVariables environmentVariables;
+
+    @ClassRule
+    public static EnvironmentVariables environmentVariables() {
+        randomPort = SocketUtils.findAvailableTcpPort();
+
+        environmentVariables = new EnvironmentVariables();
+        environmentVariables.set("GRPC_PORT", "" + randomPort);
+        return environmentVariables;
+    }
+
+    @AfterClass
+    public static void tearDown() {
+        environmentVariables.clear("GRPC_PORT");
+    }
+
+    @LocalRunningGrpcPort
+    int runningPort;
+
+    @Override
+    protected int getPort() {
+        return runningPort;
+    }
+
+    @Override
+    protected void beforeGreeting() {
+        Assert.assertEquals(randomPort, gRpcServerProperties.getPort());
+        Assert.assertEquals(randomPort, runningPort);
+    }
+}

grpc-spring-boot2-starter-demo/build.gradle

@@ -13,7 +13,7 @@ apply plugin: 'org.springframework.boot'
 apply plugin: 'io.spring.dependency-management'
 
 
-sourceSets.test{
+project.sourceSets.test{
     java{
         srcDir "${project(':grpc-spring-boot-starter-demo').getProjectDir()}/src/test/java"
     }
@@ -26,6 +26,7 @@ dependencies {
 
 	testCompile('org.springframework.boot:spring-boot-starter-test')
 	testCompile 'org.springframework.boot:spring-boot-starter-aop'
+	testCompile 'com.github.stefanbirkner:system-rules:1.18.0'
 
     testRuntime('org.springframework.boot:spring-boot-starter-actuator')
     testRuntime('org.springframework.boot:spring-boot-starter-web')