BAEL-20869 Move remaining spring boot modules

spring-boot-modules/spring-boot-config-jpa-error/data-jpa-application/README.md

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+### Relevant Articles
+
+- [Unable to Find @SpringBootConfiguration with @DataJpaTest](https://www.baeldung.com/spring-boot-unable-to-find-springbootconfiguration-with-datajpatest)

spring-boot-modules/spring-boot-config-jpa-error/data-jpa-application/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>data-jpa-application</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+
+    <parent>
+        <groupId>com.baeldung.spring-boot-config-jpa-error</groupId>
+        <artifactId>spring-boot-config-jpa-error</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+    </parent>
+
+</project>

spring-boot-modules/spring-boot-config-jpa-error/data-jpa-application/src/main/java/com/baeldung/data/jpa/ApplicationFound.java

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+package com.baeldung.data.jpa;
+
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class ApplicationFound {
+}

spring-boot-modules/spring-boot-config-jpa-error/data-jpa-application/src/main/java/com/baeldung/data/jpa/application/ApplicationNotFound.java

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+package com.baeldung.data.jpa.application;
+
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class ApplicationNotFound {
+}

spring-boot-modules/spring-boot-config-jpa-error/data-jpa-application/src/test/java/com/baeldung/data/jpa/DataJpaUnitTest.java

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+package com.baeldung.data.jpa;
+
+import static org.junit.Assert.assertNotNull;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+import org.springframework.boot.test.autoconfigure.orm.jpa.TestEntityManager;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@DataJpaTest
+public class DataJpaUnitTest {
+
+    @Autowired
+    private TestEntityManager entityManager;
+
+    @Test
+    public void givenACorrectSetup_thenAnEntityManagerWillBeAvailable() {
+        assertNotNull(entityManager);
+    }
+}