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package junitparams;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import org.junit.Test;
import org.junit.runner.RunWith;
import junitparams.converters.ConversionFailedException;
import junitparams.converters.ConvertParam;
import junitparams.converters.Converter;
import junitparams.converters.Param;
import junitparams.converters.ParamConverter;
import static org.assertj.core.api.Assertions.*;
@RunWith(JUnitParamsRunner.class)
public class ParamsConverterTest {
@Test
@Parameters({"01.12.2012"})
public void convertSingleParam(
@ConvertParam(value = StringToDateConverter.class, options = "dd.MM.yyyy") Date date) {
Calendar calendar = createCalendarWithDate(date);
assertCalendarDate(calendar);
}
@Test
@Parameters({"01.12.2012,A"})
public void convertMultipleParams(
@ConvertParam(value = StringToDateConverter.class, options = "dd.MM.yyyy") Date date,
@ConvertParam(LetterToNumberConverter.class) int num) {
Calendar calendar = createCalendarWithDate(date);
assertCalendarDate(calendar);
assertThat(num).isEqualTo(1);
}
@Test
@Parameters(method = "params")
public void convertParamsFromMethod(
@ConvertParam(value = StringToDateConverter.class, options = "dd.MM.yyyy") Date date) {
Calendar calendar = createCalendarWithDate(date);
assertCalendarDate(calendar);
}
@Test
@Parameters({"01.12.2012"})
public void convertParamsUsingParamAnnotation(@Param(converter = SimpleDateConverter.class) Date date) {
Calendar calendar = createCalendarWithDate(date);
assertCalendarDate(calendar);
}
@Test
@Parameters({"01.12.2012"})
public void convertParamsUsingCustomParamAnnotation(@DateParam Date date) {
Calendar calendar = createCalendarWithDate(date);
assertCalendarDate(calendar);
}
@Test
@Parameters(method = "params")
public void convertParamsFromMethodUsingCustomParamAnnotation(@DateParam Date date) {
Calendar calendar = createCalendarWithDate(date);
assertCalendarDate(calendar);
}
private List<String> params() {
return Arrays.asList("01.12.2012");
}
@Test
@Parameters({"2012-12-01"})
public void convertParamsUsingCustomParamAnnotationOverridingAttributes(@DateParam(format = "yyyy-MM-dd") Date date) {
Calendar calendar = createCalendarWithDate(date);
assertCalendarDate(calendar);
}
@Test
@Parameters({"2012-12-01"})
public void passesParametersWithOtherAnnotations(@Other String parameter) {
assertThat(parameter)
.isExactlyInstanceOf(String.class)
.isEqualTo("2012-12-01");
}
private void assertCalendarDate(Calendar calendar) {
assertThat(calendar.get(Calendar.YEAR)).isEqualTo(2012);
assertThat(calendar.get(Calendar.MONTH)).isEqualTo(11);
assertThat(calendar.get(Calendar.DAY_OF_MONTH)).isEqualTo(1);
}
private Calendar createCalendarWithDate(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
return calendar;
}
public static class LetterToNumberConverter implements ParamConverter<Integer> {
public Integer convert(Object param, String options) {
return param.toString().charAt(0) - 64;
}
}
public static class StringToDateConverter implements ParamConverter<Date> {
public Date convert(Object param, String options) {
try {
return new SimpleDateFormat(options).parse(param.toString());
} catch (ParseException e) {
throw new RuntimeException(e);
}
}
}
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.PARAMETER)
@Param(converter = FormattedDateConverter.class)
public @interface DateParam {
String format() default "dd.MM.yyyy";
}
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.PARAMETER)
public @interface Other {
}
public static class FormattedDateConverter implements Converter<DateParam, Date> {
private String format;
@Override
public void initialize(DateParam annotation) {
this.format = annotation.format();
}
@Override
public Date convert(Object param) throws ConversionFailedException {
try {
return new SimpleDateFormat(format).parse(param.toString());
} catch (ParseException e) {
throw new ConversionFailedException("failed");
}
}
}
public static class SimpleDateConverter implements Converter<Param, Date> {
@Override
public void initialize(Param annotation) {
}
@Override
public Date convert(Object param) throws ConversionFailedException {
try {
return new SimpleDateFormat("dd.MM.yyyy").parse(param.toString());
} catch (ParseException e) {
throw new ConversionFailedException("failed");
}
}
}
}
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