@Test
public void shouldReturnParameterNamesFromDebugSymbolsForConstructor() throws Exception {
ParanamerParameterNameProvider parameterNameProvider = new ParanamerParameterNameProvider();
Constructor<ComputerGame> constructor = ComputerGame.class.getConstructor(String.class);
List<String> parameterNames = parameterNameProvider.getParameterNames(constructor);
assertThat(parameterNames).containsExactly("title");
}
@Test
public void shouldReturnParameterNamesFromDebugSymbolsForMethod() throws Exception {
ParanamerParameterNameProvider parameterNameProvider = new ParanamerParameterNameProvider();
Method method = ComputerGame.class.getMethod("startGame", String.class, int.class);
List<String> parameterNames = parameterNameProvider.getParameterNames(method);
assertThat(parameterNames).containsExactly("level", "numberOfPlayers");
}
@Test
public void shouldReturnDefaultValuesAsFallBack() throws Exception {
ParanamerParameterNameProvider parameterNameProvider =
new ParanamerParameterNameProvider(new CustomAnnotationParanamer());
Method method = ComputerGame.class.getMethod("startGame", String.class, int.class);
List<String> parameterNames = parameterNameProvider.getParameterNames(method);
assertThat(parameterNames).containsExactly("level", "numberOfPlayers");
}
@Test
public void shouldReturnParameterNamesFromCustomParanamer() throws Exception {
ParanamerParameterNameProvider parameterNameProvider =
new ParanamerParameterNameProvider(new CustomAnnotationParanamer());
Constructor<ComputerGame> constructor = ComputerGame.class.getConstructor(String.class);
List<String> parameterNames = parameterNameProvider.getParameterNames(constructor);
assertThat(parameterNames).containsExactly("gameTitle");
Method method = ComputerGame.class.getMethod("pauseGame", int.class);
parameterNames = parameterNameProvider.getParameterNames(method);
assertThat(parameterNames).containsExactly("durationInSeconds");
}