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Allow TestPropertyValues.of to take a Map source
Extend the API of `TestPropertyValues` so that it can be constructed from an existing `Map` or a `Stream` and mapping `Function`. Closes gh-23685
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@ -23,6 +23,7 @@ import java.util.LinkedHashMap;
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import java.util.Map;
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import java.util.Objects;
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import java.util.concurrent.Callable;
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import java.util.function.Function;
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import java.util.stream.Stream;
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import java.util.stream.StreamSupport;
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@ -59,17 +60,62 @@ public final class TestPropertyValues {
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}
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/**
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* Builder method to add more properties.
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* Return a new {@link TestPropertyValues} instance with additional entries.
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* Name-value pairs can be specified with colon (":") or equals ("=") separators.
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* @param pairs the property pairs to add
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* @return a new {@link TestPropertyValues} instance
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*/
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public TestPropertyValues and(String... pairs) {
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return and(Arrays.stream(pairs).map(Pair::parse));
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return and(Arrays.stream(pairs), Pair::parse);
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}
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private TestPropertyValues and(Stream<Pair> pairs) {
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/**
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* Return a new {@link TestPropertyValues} instance with additional entries.
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* Name-value pairs can be specified with colon (":") or equals ("=") separators.
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* @param pairs the property pairs to add
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* @return a new {@link TestPropertyValues} instance
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* @since 2.4.0
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*/
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public TestPropertyValues and(Iterable<String> pairs) {
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return (pairs != null) ? and(StreamSupport.stream(pairs.spliterator(), false)) : this;
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}
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/**
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* Return a new {@link TestPropertyValues} instance with additional entries.
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* Name-value pairs can be specified with colon (":") or equals ("=") separators.
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* @param pairs the property pairs to add
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* @return a new {@link TestPropertyValues} instance
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* @since 2.4.0
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*/
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public TestPropertyValues and(Stream<String> pairs) {
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return (pairs != null) ? and(pairs, Pair::parse) : this;
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}
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/**
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* Return a new {@link TestPropertyValues} instance with additional entries.
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* @param map the map of properties that need to be added to the environment
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* @return a new {@link TestPropertyValues} instance
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* @since 2.4.0
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*/
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public TestPropertyValues and(Map<String, String> map) {
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return (map != null) ? and(map.entrySet().stream(), Pair::fromMapEntry) : this;
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}
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/**
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* Return a new {@link TestPropertyValues} instance with additional entries.
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* @param <T> the stream element type
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* @param stream the elements that need to be added to the environment
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* @param mapper a mapper function to convert an element from the stream into a
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* {@link Pair}
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* @return a new {@link TestPropertyValues} instance
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* @since 2.4.0
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*/
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public <T> TestPropertyValues and(Stream<T> stream, Function<T, Pair> mapper) {
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if (stream == null) {
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return this;
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}
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Map<String, Object> properties = new LinkedHashMap<>(this.properties);
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pairs.filter(Objects::nonNull).forEach((pair) -> pair.addTo(properties));
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stream.map(mapper).filter(Objects::nonNull).forEach((pair) -> pair.addTo(properties));
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return new TestPropertyValues(properties);
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}
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@ -174,10 +220,7 @@ public final class TestPropertyValues {
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* @return the new instance
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*/
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public static TestPropertyValues of(Iterable<String> pairs) {
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if (pairs == null) {
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return empty();
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}
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return of(StreamSupport.stream(pairs.spliterator(), false));
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return (pairs != null) ? of(StreamSupport.stream(pairs.spliterator(), false)) : empty();
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}
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/**
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@ -189,10 +232,30 @@ public final class TestPropertyValues {
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* @return the new instance
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*/
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public static TestPropertyValues of(Stream<String> pairs) {
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if (pairs == null) {
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return empty();
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}
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return empty().and(pairs.map(Pair::parse));
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return (pairs != null) ? of(pairs, Pair::parse) : empty();
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}
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/**
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* Return a new {@link TestPropertyValues} with the underlying map populated with the
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* given map entries.
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* @param map the map of properties that need to be added to the environment
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* @return the new instance
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*/
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public static TestPropertyValues of(Map<String, String> map) {
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return (map != null) ? of(map.entrySet().stream(), Pair::fromMapEntry) : empty();
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}
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/**
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* Return a new {@link TestPropertyValues} with the underlying map populated with the
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* given stream.
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* @param <T> the stream element type
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* @param stream the elements that need to be added to the environment
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* @param mapper a mapper function to convert an element from the stream into a
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* {@link Pair}
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* @return the new instance
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*/
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public static <T> TestPropertyValues of(Stream<T> stream, Function<T, Pair> mapper) {
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return (stream != null) ? empty().and(stream, mapper) : empty();
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}
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/**
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@ -247,6 +310,13 @@ public final class TestPropertyValues {
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private String value;
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/**
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* Create a new {@link Pair} instance.
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* @param name the name
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* @param value the value
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* @deprecated since 2.4.0 in favor of {@link #of(String, String)}
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*/
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@Deprecated
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public Pair(String name, String value) {
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Assert.hasLength(name, "Name must not be empty");
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this.name = name;
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@ -276,7 +346,24 @@ public final class TestPropertyValues {
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return Math.min(colonIndex, equalIndex);
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}
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private static Pair of(String name, String value) {
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/**
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* Factory method to create a {@link Pair} from a {@code Map.Entry}.
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* @param entry the map entry
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* @return the {@link Pair} instance or {@code null}
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* @since 2.4.0
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*/
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public static Pair fromMapEntry(Map.Entry<String, String> entry) {
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return (entry != null) ? of(entry.getKey(), entry.getValue()) : null;
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}
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/**
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* Factory method to create a {@link Pair} from a name and value.
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* @param name the name
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* @param value the value
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* @return the {@link Pair} instance or {@code null}
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* @since 2.4.0
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*/
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public static Pair of(String name, String value) {
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if (StringUtils.hasLength(name) || StringUtils.hasLength(value)) {
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return new Pair(name, value);
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}
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@ -16,8 +16,14 @@
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package org.springframework.boot.test.util;
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import java.util.Arrays;
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import java.util.LinkedHashMap;
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import java.util.Map;
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import java.util.stream.Stream;
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import org.junit.jupiter.api.Test;
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import org.springframework.boot.test.util.TestPropertyValues.Pair;
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import org.springframework.boot.test.util.TestPropertyValues.Type;
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import org.springframework.core.env.ConfigurableEnvironment;
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import org.springframework.core.env.PropertySource;
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@ -25,6 +31,7 @@ import org.springframework.core.env.StandardEnvironment;
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import org.springframework.core.env.SystemEnvironmentPropertySource;
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import static org.assertj.core.api.Assertions.assertThat;
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import static org.assertj.core.api.Assertions.entry;
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/**
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* Tests for {@link TestPropertyValues}.
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@ -36,6 +43,47 @@ class TestPropertyValuesTests {
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private final ConfigurableEnvironment environment = new StandardEnvironment();
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@Test
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void ofStringArrayCreatesValues() {
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TestPropertyValues.of("spring:boot", "version:latest").applyTo(this.environment);
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assertThat(this.environment.getProperty("spring")).isEqualTo("boot");
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assertThat(this.environment.getProperty("version")).isEqualTo("latest");
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}
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@Test
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void ofIterableCreatesValues() {
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TestPropertyValues.of(Arrays.asList("spring:boot", "version:latest")).applyTo(this.environment);
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assertThat(this.environment.getProperty("spring")).isEqualTo("boot");
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assertThat(this.environment.getProperty("version")).isEqualTo("latest");
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}
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@Test
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void ofStreamCreatesValues() {
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TestPropertyValues.of(Stream.of("spring:boot", "version:latest")).applyTo(this.environment);
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assertThat(this.environment.getProperty("spring")).isEqualTo("boot");
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assertThat(this.environment.getProperty("version")).isEqualTo("latest");
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}
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@Test
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void ofMapCreatesValues() {
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Map<String, String> map = new LinkedHashMap<>();
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map.put("spring", "boot");
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map.put("version", "latest");
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TestPropertyValues.of(map).applyTo(this.environment);
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assertThat(this.environment.getProperty("spring")).isEqualTo("boot");
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assertThat(this.environment.getProperty("version")).isEqualTo("latest");
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}
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@Test
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void ofMappedStreamCreatesValues() {
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TestPropertyValues.of(Stream.of("spring|boot", "version|latest"), (string) -> {
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String[] split = string.split("\\|");
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return Pair.of(split[0], split[1]);
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}).applyTo(this.environment);
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assertThat(this.environment.getProperty("spring")).isEqualTo("boot");
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assertThat(this.environment.getProperty("version")).isEqualTo("latest");
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}
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@Test
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void applyToEnvironmentShouldAttachConfigurationPropertySource() {
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TestPropertyValues.of("foo.bar=baz").applyTo(this.environment);
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@ -133,4 +181,23 @@ class TestPropertyValuesTests {
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}
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}
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@Test
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void pairOfCreatesPair() {
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Map<String, Object> map = new LinkedHashMap<>();
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Pair.of("spring", "boot").addTo(map);
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assertThat(map).containsOnly(entry("spring", "boot"));
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}
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@Test
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void pairOfWhenNameAndValueAreEmptyReturnsNull() {
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assertThat(Pair.of("", "")).isNull();
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}
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@Test
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void pairFromMapEntryCreatesPair() {
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Map<String, Object> map = new LinkedHashMap<>();
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Pair.fromMapEntry(entry("spring", "boot")).addTo(map);
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assertThat(map).containsOnly(entry("spring", "boot"));
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}
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}
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