. d Update supported Java versions / DRY

Author: JayBazuzi

README.md

@@ -30,7 +30,7 @@ Capturing Human Intelligence - ApprovalTests is an open source assertion/verific
 
 It is compatible with JUnit 3, 4 & 5 and TestNG.
 
-The jars can be used from JDK 1.8 on up until JDK 18.
+<!-- snippet: approvaltests-tests/src/test/java/org/approvaltests/ci/JavaVersionTest.testSupportedJavaVersions.approved.txt -->
 
 ## What can it be used for?
 

approvaltests-tests/pom.xml

@@ -36,6 +36,12 @@
             <version>0.2.9</version>
             <optional>true</optional>
         </dependency>
+        <dependency>
+            <groupId>com.jayway.jsonpath</groupId>
+            <artifactId>json-path</artifactId>
+            <version>2.9.0</version>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
@@ -48,6 +54,12 @@
             <artifactId>junit-jupiter</artifactId>
             <version>5.13.3</version>
         </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.dataformat</groupId>
+            <artifactId>jackson-dataformat-yaml</artifactId>
+            <version>2.17.1</version>
+            <scope>test</scope>
+        </dependency>
 
         <dependency>
             <groupId>com.larseckart</groupId>
@@ -90,6 +102,12 @@
             <version>1.9.3</version>
         </dependency>
 
+        <dependency>
+            <groupId>com.jayway.jsonpath</groupId>
+            <artifactId>json-path</artifactId>
+            <version>2.9.0</version>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>

approvaltests-tests/src/test/java/org/approvaltests/ci/JavaVersionTest.java

@@ -0,0 +1,27 @@
+package org.approvaltests.ci;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
+import com.jayway.jsonpath.JsonPath;
+import com.spun.util.ClassUtils;
+import org.approvaltests.Approvals;
+import org.junit.jupiter.api.Test;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class JavaVersionTest
+{
+  @Test
+  public void testSupportedJavaVersions() throws IOException
+  {
+    var testYmlPath = new File(ClassUtils.getProjectRootPath() + "/../.github/workflows/test.yml");
+    Object yaml = new ObjectMapper(new YAMLFactory()).readValue(testYmlPath, Object.class);
+    List<String> javaVersions = JsonPath.read(yaml, "$.jobs.build.strategy.matrix.java");
+    // Java 8 GitHub Action is separate from the normal matrixed CI, so hard-code it here.
+    Approvals.verify("Supported Java versions: 8, " + String.join(", ", javaVersions));
+  }
+}

approvaltests-tests/src/test/java/org/approvaltests/ci/JavaVersionTest.testSupportedJavaVersions.approved.txt

@@ -0,0 +1 @@
+Supported Java versions: 8, 17, 21, 24