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🧪 [Testing Improvement] Edge case test and fix in AbstractReactiveFeignConfigurator #741

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🧪 [Testing Improvement] Edge case test and fix in AbstractReactiveFeignConfigurator #741

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3 changes: 3 additions & 0 deletions ...guration/src/main/java/reactivefeign/spring/config/AbstractReactiveFeignConfigurator.java
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,9 @@ protected AbstractReactiveFeignConfigurator(int order) {

@Override
public int compareTo(ReactiveFeignConfigurator configurator){
if (this == configurator) {
return 0;
}
int compare = Integer.compare(order, ((AbstractReactiveFeignConfigurator) configurator).order);
if(compare == 0){
throw new IllegalArgumentException(String.format("Same order for different configurators: [%s], [%s]",
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46 changes: 46 additions & 0 deletions ...tion/src/test/java/reactivefeign/spring/config/AbstractReactiveFeignConfiguratorTest.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,46 @@
package reactivefeign.spring.config;

import org.junit.Test;
import reactivefeign.ReactiveFeignBuilder;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;

public class AbstractReactiveFeignConfiguratorTest {

@Test
public void shouldCompareSameInstance() {
TestConfigurator configurator = new TestConfigurator(1);
assertThat(configurator.compareTo(configurator)).isEqualTo(0);
}

@Test
public void shouldCompareDifferentOrder() {
TestConfigurator configurator1 = new TestConfigurator(1);
TestConfigurator configurator2 = new TestConfigurator(2);

assertThat(configurator1.compareTo(configurator2)).isLessThan(0);
assertThat(configurator2.compareTo(configurator1)).isGreaterThan(0);
}

@Test
public void shouldThrowExceptionWhenSameOrder() {
TestConfigurator configurator1 = new TestConfigurator(1);
TestConfigurator configurator2 = new TestConfigurator(1);

assertThatThrownBy(() -> configurator1.compareTo(configurator2))
.isInstanceOf(IllegalArgumentException.class)
.hasMessageContaining("Same order for different configurators");
}

@gemini-code-assist gemini-code-assist Bot Mar 2, 2026

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medium

The tests cover reflexivity and anti-symmetry from the Comparable contract, which is great. To make the test suite more comprehensive, I suggest also adding a test for transitivity ((x.compareTo(y) > 0 && y.compareTo(z) > 0) implies x.compareTo(z) > 0). This will ensure all key properties of the contract are verified.

    @Test
    public void shouldBeTransitive() {
        TestConfigurator configurator1 = new TestConfigurator(1);
        TestConfigurator configurator2 = new TestConfigurator(2);
        TestConfigurator configurator3 = new TestConfigurator(3);

        // Verifies that if c1 < c2 and c2 < c3, then c1 < c3
        assertThat(configurator1.compareTo(configurator2)).isLessThan(0);
        assertThat(configurator2.compareTo(configurator3)).isLessThan(0);
        assertThat(configurator1.compareTo(configurator3)).isLessThan(0);
    }

@Periecle Periecle Mar 2, 2026

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@jules The tests cover reflexivity and anti-symmetry from the Comparable contract, which is great. To make the test suite more comprehensive, I suggest also adding a test for transitivity ((x.compareTo(y) > 0 && y.compareTo(z) > 0) implies x.compareTo(z) > 0). This will ensure all key properties of the contract are verified.

@Test
public void shouldBeTransitive() {
    TestConfigurator configurator1 = new TestConfigurator(1);
    TestConfigurator configurator2 = new TestConfigurator(2);
    TestConfigurator configurator3 = new TestConfigurator(3);

    // Verifies that if c1 < c2 and c2 < c3, then c1 < c3
    assertThat(configurator1.compareTo(configurator2)).isLessThan(0);
    assertThat(configurator2.compareTo(configurator3)).isLessThan(0);
    assertThat(configurator1.compareTo(configurator3)).isLessThan(0);
}

@google-labs-jules google-labs-jules Bot Mar 2, 2026

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Thank you for the suggestion! I've added the shouldBeTransitive test case to ensure the transitivity property of the Comparable contract is also verified.

private static class TestConfigurator extends AbstractReactiveFeignConfigurator {
protected TestConfigurator(int order) {
super(order);
}

@Override
public ReactiveFeignBuilder configure(ReactiveFeignBuilder builder, ReactiveFeignNamedContext namedContext) {
return builder;
}
}
}
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