StringToDataSizeConverterTests Class — spring-boot Architecture

Source Code

core/spring-boot/src/test/java/org/springframework/boot/convert/StringToDataSizeConverterTests.java lines 38–115

class StringToDataSizeConverterTests {

	@ConversionServiceTest
	void convertWhenSimpleBytesShouldReturnDataSize(ConversionService conversionService) {
		assertThat(convert(conversionService, "10B")).isEqualTo(DataSize.ofBytes(10));
		assertThat(convert(conversionService, "+10B")).isEqualTo(DataSize.ofBytes(10));
		assertThat(convert(conversionService, "-10B")).isEqualTo(DataSize.ofBytes(-10));
	}

	@ConversionServiceTest
	void convertWhenSimpleKilobytesShouldReturnDataSize(ConversionService conversionService) {
		assertThat(convert(conversionService, "10KB")).isEqualTo(DataSize.ofKilobytes(10));
		assertThat(convert(conversionService, "+10KB")).isEqualTo(DataSize.ofKilobytes(10));
		assertThat(convert(conversionService, "-10KB")).isEqualTo(DataSize.ofKilobytes(-10));
	}

	@ConversionServiceTest
	void convertWhenSimpleMegabytesShouldReturnDataSize(ConversionService conversionService) {
		assertThat(convert(conversionService, "10MB")).isEqualTo(DataSize.ofMegabytes(10));
		assertThat(convert(conversionService, "+10MB")).isEqualTo(DataSize.ofMegabytes(10));
		assertThat(convert(conversionService, "-10MB")).isEqualTo(DataSize.ofMegabytes(-10));
	}

	@ConversionServiceTest
	void convertWhenSimpleGigabytesShouldReturnDataSize(ConversionService conversionService) {
		assertThat(convert(conversionService, "10GB")).isEqualTo(DataSize.ofGigabytes(10));
		assertThat(convert(conversionService, "+10GB")).isEqualTo(DataSize.ofGigabytes(10));
		assertThat(convert(conversionService, "-10GB")).isEqualTo(DataSize.ofGigabytes(-10));
	}

	@ConversionServiceTest
	void convertWhenSimpleTerabytesShouldReturnDataSize(ConversionService conversionService) {
		assertThat(convert(conversionService, "10TB")).isEqualTo(DataSize.ofTerabytes(10));
		assertThat(convert(conversionService, "+10TB")).isEqualTo(DataSize.ofTerabytes(10));
		assertThat(convert(conversionService, "-10TB")).isEqualTo(DataSize.ofTerabytes(-10));
	}

	@ConversionServiceTest
	void convertWhenSimpleWithoutSuffixShouldReturnDataSize(ConversionService conversionService) {
		assertThat(convert(conversionService, "10")).isEqualTo(DataSize.ofBytes(10));
		assertThat(convert(conversionService, "+10")).isEqualTo(DataSize.ofBytes(10));
		assertThat(convert(conversionService, "-10")).isEqualTo(DataSize.ofBytes(-10));
	}

	@ConversionServiceTest
	void convertWhenSimpleWithoutSuffixButWithAnnotationShouldReturnDataSize(ConversionService conversionService) {
		assertThat(convert(conversionService, "10", DataUnit.KILOBYTES)).isEqualTo(DataSize.ofKilobytes(10));
		assertThat(convert(conversionService, "+10", DataUnit.KILOBYTES)).isEqualTo(DataSize.ofKilobytes(10));
		assertThat(convert(conversionService, "-10", DataUnit.KILOBYTES)).isEqualTo(DataSize.ofKilobytes(-10));
	}

	@ConversionServiceTest
	void convertWhenBadFormatShouldThrowException(ConversionService conversionService) {
		assertThatExceptionOfType(ConversionFailedException.class).isThrownBy(() -> convert(conversionService, "10WB"))
			.havingCause()
			.isInstanceOf(IllegalArgumentException.class)
			.withMessageContaining("'10WB' is not a valid data size");
	}

	@ConversionServiceTest
	void convertWhenEmptyShouldReturnNull(ConversionService conversionService) {
		assertThat(convert(conversionService, "")).isNull();
	}

	private @Nullable DataSize convert(ConversionService conversionService, String source) {
		return conversionService.convert(source, DataSize.class);
	}

	private @Nullable DataSize convert(ConversionService conversionService, String source, @Nullable DataUnit unit) {
		return (DataSize) conversionService.convert(source, TypeDescriptor.forObject(source),
				MockDataSizeTypeDescriptor.get(unit));
	}

	static Stream<? extends Arguments> conversionServices() {
		return ConversionServiceArguments.with(new StringToDataSizeConverter());
	}

}