Update Gradle Wrapper to 7.6 (#693 / #694)

This PR updates the Gradle Wrapper from 7.5 to 7.6. Since this comes
with Java 19 support, the `full-featured` matrix is updated
accordingly. In addition, `experimental` now uses Java 20. This
requires disabling Byte Buddy's class file version validation, which
is used by EqualsVerifier, and which also has been updated from 3.10
to 3.11.1.

Closes: #693
PR: #694

.github/workflows/build.yml

@@ -1,7 +1,7 @@
 name: Main build
 
 env:
-  EXPERIMENTAL_JAVA: 19
+  EXPERIMENTAL_JAVA: 20
 
 on:
   # We want to trigger our builds all the time for the default branch
@@ -116,7 +116,7 @@ jobs:
     timeout-minutes: 15
     strategy:
       matrix:
-        java: [ 11, 17, 18 ]
+        java: [ 11, 17, 19 ]
         junit-version: [ '5.9.0' ]
         os: [ubuntu, macos, windows]
     name: with Java ${{ matrix.java }}, JUnit ${{ matrix.junit-version }} on ${{ matrix.os }}

build.gradle.kts

@@ -64,7 +64,7 @@ dependencies {
 	testImplementation(group = "org.assertj", name = "assertj-core", version = "3.22.0")
 	testImplementation(group = "org.mockito", name = "mockito-core", version = "4.4.0")
 	testImplementation(group = "com.google.jimfs", name = "jimfs", version = "1.2")
-	testImplementation(group = "nl.jqno.equalsverifier", name = "equalsverifier", version = "3.10")
+	testImplementation(group = "nl.jqno.equalsverifier", name = "equalsverifier", version = "3.11.1")
 
 	testRuntimeOnly(group = "org.apache.logging.log4j", name = "log4j-core", version = "2.17.2")
 	testRuntimeOnly(group = "org.apache.logging.log4j", name = "log4j-jul", version = "2.17.2")
@@ -257,6 +257,10 @@ tasks {
 		// set it to "allow" for EnvironmentVariableUtilsTests$With_SecurityManager.
 		if (JavaVersion.current() >= JavaVersion.VERSION_12)
 			systemProperty("java.security.manager", "allow")
+		// Disables Byte Buddy validation for the maximum supported class file version, since we are possibly using a
+		// Java EA release.
+		if (experimentalBuild)
+			systemProperty("net.bytebuddy.experimental", true)
 		jvmArgs(testJvmArgs)
 	}
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-bin.zip
+networkTimeout=10000
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -55,7 +55,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
@@ -80,10 +80,10 @@ do
     esac
 done
 
-APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
-
-APP_NAME="Gradle"
+# This is normally unused
+# shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
 
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
@@ -143,12 +143,16 @@ fi
 if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
     case $MAX_FD in #(
       max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045 
         MAX_FD=$( ulimit -H -n ) ||
             warn "Could not query maximum file descriptor limit"
     esac
     case $MAX_FD in  #(
       '' | soft) :;; #(
       *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045 
         ulimit -n "$MAX_FD" ||
             warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac

gradlew.bat

@@ -26,6 +26,7 @@ if "%OS%"=="Windows_NT" setlocal
 
 set DIRNAME=%~dp0
 if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%