Inline Short Files in Tests

class SupplyTests {

  @Test
  void updateBarcode() throws JSONException {
    var supply = new Supply("1234", 5);

    var actualJson = supply.toJson();

    var expectedJson = read("/supply.json");
    assertEquals(expectedJson, actualJson, STRICT);
  }

}

uses JSONAssert
is a JUnit 5 unit test
read file from classpath (part of src/test/resources)
expect output not directly visible, one click away

class SupplyTests {

    @Test
    void updateBarcode() throws JSONException {
        var supply = new Supply("1234", 5);

        var actualJson = supply.toJson();

        var expectedJson = """
                {
                  "id": "1234", 
                  count: 5
                }""";
        assertEquals(expectedJson, actualJson, STRICT);
    }
}

expected output directly visible
makes use of text block
templating easy with formatted ???