SystemEnvironmentPropertyMapperTests Class — spring-boot Architecture

Source Code

core/spring-boot/src/test/java/org/springframework/boot/context/properties/source/SystemEnvironmentPropertyMapperTests.java lines 31–100

class SystemEnvironmentPropertyMapperTests extends AbstractPropertyMapperTests {

	@Override
	protected PropertyMapper getMapper() {
		return SystemEnvironmentPropertyMapper.INSTANCE;
	}

	@Test
	void mapFromStringShouldReturnBestGuess() {
		assertThat(mapPropertySourceName("SERVER")).isEqualTo("server");
		assertThat(mapPropertySourceName("SERVER_PORT")).isEqualTo("server.port");
		assertThat(mapPropertySourceName("HOST_0")).isEqualTo("host[0]");
		assertThat(mapPropertySourceName("HOST_0_1")).isEqualTo("host[0][1]");
		assertThat(mapPropertySourceName("HOST_0_NAME")).isEqualTo("host[0].name");
		assertThat(mapPropertySourceName("HOST_F00_NAME")).isEqualTo("host.f00.name");
		assertThat(mapPropertySourceName("S-ERVER")).isEqualTo("s-erver");
	}

	@Test
	void mapFromConfigurationShouldReturnBestGuess() {
		assertThat(mapConfigurationPropertyName("server")).containsExactly("SERVER", "server");
		assertThat(mapConfigurationPropertyName("server.port")).containsExactly("SERVER_PORT", "server_port");
		assertThat(mapConfigurationPropertyName("host[0]")).containsExactly("HOST_0", "host_0");
		assertThat(mapConfigurationPropertyName("host[0][1]")).containsExactly("HOST_0_1", "host_0_1");
		assertThat(mapConfigurationPropertyName("host[0].name")).containsExactly("HOST_0_NAME", "host_0_name");
		assertThat(mapConfigurationPropertyName("host.f00.name")).containsExactly("HOST_F00_NAME", "host_f00_name");
		assertThat(mapConfigurationPropertyName("foo.the-bar")).containsExactly("FOO_THEBAR", "FOO_THE_BAR",
				"foo_thebar", "foo_the_bar");
	}

	@Test
	void underscoreShouldMapToEmptyString() {
		ConfigurationPropertyName mapped = getMapper().map("_");
		assertThat(mapped.isEmpty()).isTrue();
	}

	@Test
	void underscoreWithWhitespaceShouldMapToEmptyString() {
		ConfigurationPropertyName mapped = getMapper().map(" _");
		assertThat(mapped.isEmpty()).isTrue();
	}

	@Test
	void isAncestorOfConsidersLegacyNames() {
		ConfigurationPropertyName name = ConfigurationPropertyName.of("my.spring-boot");
		BiPredicate<ConfigurationPropertyName, ConfigurationPropertyName> check = getMapper().getAncestorOfCheck();
		assertThat(check.test(name, ConfigurationPropertyName.adapt("MY_SPRING_BOOT_PROPERTY", '_'))).isTrue();
		assertThat(check.test(name, ConfigurationPropertyName.adapt("MY_SPRINGBOOT_PROPERTY", '_'))).isTrue();
		assertThat(check.test(name, ConfigurationPropertyName.adapt("MY_BOOT_PROPERTY", '_'))).isFalse();
	}

	@Test
	void isAncestorOfWhenNonCanonicalSource() {
		ConfigurationPropertyName name = ConfigurationPropertyName.adapt("my.springBoot", '.');
		BiPredicate<ConfigurationPropertyName, ConfigurationPropertyName> check = getMapper().getAncestorOfCheck();
		assertThat(check.test(name, ConfigurationPropertyName.of("my.spring-boot.property"))).isTrue();
		assertThat(check.test(name, ConfigurationPropertyName.of("my.springboot.property"))).isTrue();
		assertThat(check.test(name, ConfigurationPropertyName.of("my.boot.property"))).isFalse();
	}

	@Test
	void isAncestorOfWhenNonCanonicalAndDashedSource() {
		ConfigurationPropertyName name = ConfigurationPropertyName.adapt("my.springBoot.input-value", '.');
		BiPredicate<ConfigurationPropertyName, ConfigurationPropertyName> check = getMapper().getAncestorOfCheck();
		assertThat(check.test(name, ConfigurationPropertyName.of("my.spring-boot.input-value.property"))).isTrue();
		assertThat(check.test(name, ConfigurationPropertyName.of("my.springboot.inputvalue.property"))).isTrue();
		assertThat(check.test(name, ConfigurationPropertyName.of("my.boot.property"))).isFalse();
	}

}