refactoring: move Query/Function logic into Requester class

src/test/kotlin/fr/postgresjson/ConnectionTest.kt

@@ -2,39 +2,23 @@ package fr.postgresjson
 
 import fr.postgresjson.connexion.Connection
 import fr.postgresjson.entity.IdEntity
-import org.junit.jupiter.api.*
 import org.junit.jupiter.api.Assertions.assertTrue
-import java.io.File
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.TestInstance
 
 @TestInstance(TestInstance.Lifecycle.PER_CLASS)
-class ConnectionTest() {
+class ConnectionTest(): TestAbstract() {
     private class ObjTest(var name: String): IdEntity()
     private class ObjTest2(var title: String, var test: ObjTest?): IdEntity()
 
     private lateinit var connection: Connection
 
-    fun getConnextion(): Connection {
-        return Connection(database = "test", username = "test", password = "test")
-    }
-
-    @BeforeAll
-    fun beforeAll() {
-        val initSQL = File(this::class.java.getResource("/fixtures/init.sql").toURI())
-        val promise = getConnextion().connect().sendQuery(initSQL.readText())
-        promise.join()
-    }
-
     @BeforeEach
     fun before() {
         connection = getConnextion()
     }
 
-    @AfterAll
-    fun afterAll() {
-        val downSQL = File(this::class.java.getResource("/fixtures/down.sql").toURI())
-        getConnextion().connect().sendQuery(downSQL.readText()).join()
-    }
-
     @Test
     fun getObject() {
         val obj: ObjTest? = connection.selectOne<Int?, ObjTest>("select to_json(a) from test a limit 1")