usehamcrestassertthat.md

Use MatcherAssert#assertThat(..)

org.openrewrite.java.testing.junit5.UseHamcrestAssertThat

JUnit 4's Assert#assertThat(..) This method was deprecated in JUnit 4 and removed in JUnit Jupiter.

Tags

• junit
• testing
• hamcrest

Source

GitHub, Issue Tracker, Maven Central

• groupId: org.openrewrite.recipe
• artifactId: rewrite-testing-frameworks
• version: 2.0.2

Examples

Example 1

{% tabs %} {% tab title="Test.java" %}

Before

{% code title="Test.java" %}

import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;

class Test {
    void test() {
        assertThat(1 + 1, is(2));
    }
}

{% endcode %}

After

{% code title="Test.java" %}

import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;

class Test {
    void test() {
        assertThat(1 + 1, is(2));
    }
}

{% endcode %}

{% endtab %} {% tab title="Diff" %} {% code %}

--- Test.java
+++ Test.java
@@ -2,1 +2,1 @@
import static org.hamcrest.CoreMatchers.is;
-import static org.junit.Assert.assertThat;
+import static org.hamcrest.MatcherAssert.assertThat;

{% endcode %} {% endtab %} {% endtabs %}

---

Example 2

{% tabs %} {% tab title="Test.java" %}

Before

{% code title="Test.java" %}

import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;

class Test {
    void test() {
        assertThat(1 + 1, is(2));
    }
}

{% endcode %}

After

{% code title="Test.java" %}

import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;

class Test {
    void test() {
        assertThat(1 + 1, is(2));
    }
}

{% endcode %}

{% endtab %} {% tab title="Diff" %} {% code %}

--- Test.java
+++ Test.java
@@ -2,1 +2,1 @@
import static org.hamcrest.CoreMatchers.is;
-import static org.junit.Assert.assertThat;
+import static org.hamcrest.MatcherAssert.assertThat;

{% endcode %} {% endtab %} {% endtabs %}

Usage

This recipe has no required configuration options. It can be activated by adding a dependency on org.openrewrite.recipe:rewrite-testing-frameworks:2.0.2 in your build file or by running a shell command (in which case no build changes are needed): {% tabs %} {% tab title="Gradle" %} {% code title="build.gradle" %}

plugins {
    id("org.openrewrite.rewrite") version("6.1.4")
}

rewrite {
    activeRecipe("org.openrewrite.java.testing.junit5.UseHamcrestAssertThat")
}

repositories {
    mavenCentral()
}

dependencies {
    rewrite("org.openrewrite.recipe:rewrite-testing-frameworks:2.0.2")
}

{% endcode %} {% endtab %} {% tab title="Maven POM" %} {% code title="pom.xml" %}

<project>
  <build>
    <plugins>
      <plugin>
        <groupId>org.openrewrite.maven</groupId>
        <artifactId>rewrite-maven-plugin</artifactId>
        <version>5.2.4</version>
        <configuration>
          <activeRecipes>
            <recipe>org.openrewrite.java.testing.junit5.UseHamcrestAssertThat</recipe>
          </activeRecipes>
        </configuration>
        <dependencies>
          <dependency>
            <groupId>org.openrewrite.recipe</groupId>
            <artifactId>rewrite-testing-frameworks</artifactId>
            <version>2.0.2</version>
          </dependency>
        </dependencies>
      </plugin>
    </plugins>
  </build>
</project>

{% endcode %} {% endtab %}

{% tab title="Maven Command Line" %} {% code title="shell" %} You will need to have Maven installed on your machine before you can run the following command.

mvn -U org.openrewrite.maven:rewrite-maven-plugin:run \
  -Drewrite.recipeArtifactCoordinates=org.openrewrite.recipe:rewrite-testing-frameworks:RELEASE \
  -Drewrite.activeRecipes=org.openrewrite.java.testing.junit5.UseHamcrestAssertThat

{% endcode %} {% endtab %} {% endtabs %}

Definition

{% tabs %} {% tab title="Recipe List" %}

• Change method target to static
  • methodPattern: org.junit.Assert assertThat(..)
  • fullyQualifiedTargetTypeName: org.hamcrest.MatcherAssert
• Use static import
  • methodPattern: org.hamcrest.MatcherAssert assertThat(..)

{% endtab %}

{% tab title="Yaml Recipe List" %}

---
type: specs.openrewrite.org/v1beta/recipe
name: org.openrewrite.java.testing.junit5.UseHamcrestAssertThat
displayName: Use `MatcherAssert#assertThat(..)`
description: JUnit 4's `Assert#assertThat(..)` This method was deprecated in JUnit 4 and removed in JUnit Jupiter.
tags:
  - junit
  - testing
  - hamcrest
recipeList:
  - org.openrewrite.java.ChangeMethodTargetToStatic:
      methodPattern: org.junit.Assert assertThat(..)
      fullyQualifiedTargetTypeName: org.hamcrest.MatcherAssert
  - org.openrewrite.java.UseStaticImport:
      methodPattern: org.hamcrest.MatcherAssert assertThat(..)

{% endtab %} {% endtabs %}

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