Modified API and created its tests

database/migrations/2019_05_09_062832_create_siswas_table.php

@@ -19,7 +19,7 @@ class CreateSiswasTable extends Migration
             $table->string('nisn');
             $table->string('kelas');
             $table->string('tempat_lahir');
-            $table->string('tanggal_lahir');
+            $table->date('tanggal_lahir');
             $table->boolean('lulus');
             $table->timestamps();
             $table->softDeletes();

database/migrations/2019_05_09_064211_create_access_logs_table.php

@@ -15,11 +15,12 @@ class CreateAccessLogsTable extends Migration
     {
         Schema::create('access_logs', function (Blueprint $table) {
             $table->bigIncrements('id');
-            $table->unsignedInteger('siswa_id');
+            $table->unsignedBigInteger('siswa_id');
             $table->timestamps();
             $table->softDeletes();
 
             $table->foreign('siswa_id')
+                  ->references('id')
                   ->on('siswas')
                   ->onUpdate('cascade')
                   ->onDelete('restrict');