Run regression tests on JDK 26

buildSrc/src/main/groovy/nullaway.java-test-conventions.gradle

@@ -78,10 +78,14 @@ test {
 }
 
 // Tasks for testing on other JDK versions; see https://jakewharton.com/build-on-latest-java-test-through-lowest-java/
-[21].each { majorVersion ->
+[21, 26].each { majorVersion ->
     def jdkTest = tasks.register("testJdk$majorVersion", Test) {
         javaLauncher = javaToolchains.launcherFor {
             languageVersion = JavaLanguageVersion.of(majorVersion)
+            // We prefer toolchains that include jmod files for the Java standard library, like Azul Zulu,
+            // for better compatibility with WALA / JarInfer.
+            // Temurin does not include jmod files as of their JDK 24 builds.
+            vendor = JvmVendorSpec.AZUL
         }
 
         description = "Runs the test suite on JDK $majorVersion"

gradle/libs.versions.toml

@@ -2,7 +2,7 @@
 asm = "9.3"
 check-framework = "4.0.0"
 support = "27.1.1"
-wala = "1.6.12"
+wala = "1.7.0"
 commons-cli = "1.4"
 auto-service = "1.1.1"
 google-java-format = "1.34.1"

jdk-recent-unit-tests/build.gradle

@@ -51,17 +51,15 @@ tasks.withType(Test).configureEach { test ->
         // Used by com.uber.nullaway.jdk17.NullAwayModuleInfoTests
         "-Dtest.module.path=${configurations.testModulePath.asPath}"
     ]
+    // The test module jar is consumed via the synthetic module path above, so every
+    // JDK-specific Test task needs it built before execution.
+    dependsOn ':test-java-module:jar'
 }
 
-// Disable tasks for specific JDK versions; we only run on the recent JDK version specified above
+// Disable tasks for specific JDK versions; we only run on the recent JDK version specified above and newer
 tasks.getByName('testJdk17').configure {
     onlyIf { false }
 }
 tasks.getByName('testJdk21').configure {
     onlyIf { false }
 }
-
-tasks.getByName('test').configure {
-    // we need this since we don't have an implementation / api dependence on test-java-module
-    dependsOn ':test-java-module:jar'
-}