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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.flags;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.node.BooleanNode;
import org.junit.jupiter.api.Test;
import org.mockito.ArgumentCaptor;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.is;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
/**
* @author hakonhall
*/
public class FlagsTest {
@Test
void testBoolean() {
final boolean defaultValue = false;
FlagSource source = mock(FlagSource.class);
BooleanFlag booleanFlag = Flags.defineFeatureFlag("id", defaultValue, List.of("owner"), "1970-01-01", "2100-01-01", "description",
"modification effect", FetchVector.Dimension.ZONE_ID, FetchVector.Dimension.HOSTNAME)
.with(FetchVector.Dimension.ZONE_ID, "a-zone")
.bindTo(source);
assertThat(booleanFlag.id().toString(), equalTo("id"));
when(source.fetch(eq(new FlagId("id")), any())).thenReturn(Optional.empty());
// default value without raw flag
assertThat(booleanFlag.value(), equalTo(defaultValue));
ArgumentCaptor<FetchVector> vector = ArgumentCaptor.forClass(FetchVector.class);
verify(source).fetch(any(), vector.capture());
// hostname is set by default
Optional<String> hostname = vector.getValue().getValue(FetchVector.Dimension.HOSTNAME);
assertTrue(hostname.isPresent());
assertFalse(hostname.get().isEmpty());
// zone is set because it was set on the unbound flag above
assertThat(vector.getValue().getValue(FetchVector.Dimension.ZONE_ID), is(Optional.of("a-zone")));
// application and node type are not set
assertThat(vector.getValue().getValue(FetchVector.Dimension.INSTANCE_ID), is(Optional.empty()));
assertThat(vector.getValue().getValue(FetchVector.Dimension.NODE_TYPE), is(Optional.empty()));
RawFlag rawFlag = mock(RawFlag.class);
when(source.fetch(eq(new FlagId("id")), any())).thenReturn(Optional.of(rawFlag));
when(rawFlag.asJsonNode()).thenReturn(BooleanNode.getTrue());
// raw flag deserializes to true
assertThat(booleanFlag.with(FetchVector.Dimension.INSTANCE_ID, "an-app").value(), equalTo(true));
verify(source, times(2)).fetch(any(), vector.capture());
// application was set on the (bound) flag.
assertThat(vector.getValue().getValue(FetchVector.Dimension.INSTANCE_ID), is(Optional.of("an-app")));
}
@Test
void testString() {
testGeneric(Flags.defineStringFlag("string-id", "default value", List.of("owner"), "1970-01-01", "2100-01-01", "description",
"modification effect", FetchVector.Dimension.ZONE_ID, FetchVector.Dimension.HOSTNAME),
"other value");
}
@Test
void testInt() {
testGeneric(Flags.defineIntFlag("int-id", 2, List.of("owner"), "1970-01-01", "2100-01-01", "desc", "mod"), 3);
}
@Test
void testLong() {
testGeneric(Flags.defineLongFlag("long-id", 1L, List.of("owner"), "1970-01-01", "2100-01-01", "desc", "mod"), 2L);
}
@Test
void testDouble() {
testGeneric(Flags.defineDoubleFlag("double-id", 3.142, List.of("owner"), "1970-01-01", "2100-01-01", "desc", "mod"), 2.718);
}
@Test
void testList() {
testGeneric(Flags.defineListFlag("list-id", List.of("a"), String.class, List.of("owner"), "1970-01-01", "2100-01-01", "desc", "mod"), List.of("a", "b", "c"));
}
@Test
void testJacksonClass() {
ExampleJacksonClass defaultInstance = new ExampleJacksonClass();
ExampleJacksonClass instance = new ExampleJacksonClass();
instance.integer = -2;
instance.string = "foo";
testGeneric(Flags.defineJacksonFlag("jackson-id", defaultInstance, ExampleJacksonClass.class,
List.of("owner"), "1970-01-01", "2100-01-01", "description", "modification effect", FetchVector.Dimension.HOSTNAME),
instance);
testGeneric(Flags.defineListFlag("jackson-list-id", List.of(defaultInstance), ExampleJacksonClass.class, List.of("owner"), "1970-01-01", "2100-01-01", "desc", "mod"),
List.of(instance));
}
static <T> void testGeneric(UnboundFlag<T, ?, ?> unboundFlag, T value) {
FlagSource source = mock(FlagSource.class);
Flag<T, ?> flag = unboundFlag.bindTo(source);
when(source.fetch(any(), any()))
.thenReturn(Optional.empty())
.thenReturn(Optional.of(flag.serializer().serialize(value)));
assertThat(flag.boxedValue(), equalTo(unboundFlag.defaultValue()));
assertThat(flag.boxedValue(), equalTo(value));
assertTrue(Flags.getFlag(unboundFlag.id()).isPresent());
}
@JsonIgnoreProperties(ignoreUnknown = true)
private static class ExampleJacksonClass {
@JsonProperty("integer")
public int integer = 1;
@JsonProperty("string")
public String string = "2";
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
ExampleJacksonClass that = (ExampleJacksonClass) o;
return integer == that.integer &&
Objects.equals(string, that.string);
}
@Override
public int hashCode() {
return Objects.hash(integer, string);
}
}
}
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