Fix forUseAtConfigurationTime warnings from the BlowdryerSetupPlugin. (#38)

Author: nedtwigg

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Fixed
+- Remove `Provider.forUseAtConfigurationTime method has been deprecated` warnings in recent versions of Gradle. ([#38](https://github.com/diffplug/blowdryer/pull/38))
 
 ## [1.7.0] - 2023-01-28
 ### Added

src/main/java/com/diffplug/blowdryer/BlowdryerSetupPlugin.java

@@ -20,10 +20,12 @@
 import org.gradle.api.GradleException;
 import org.gradle.api.Plugin;
 import org.gradle.api.initialization.Settings;
+import org.gradle.api.provider.Provider;
 
 /** Gradle settings plugin which configures the source URL and version. */
 public class BlowdryerSetupPlugin implements Plugin<Settings> {
 	static final String MINIMUM_GRADLE = "6.8";
+	static final String STOP_FORUSE_AT_CONFIGURATION_TIME = "7.4";
 
 	private static final Pattern BAD_SEMVER = Pattern.compile("(\\d+)\\.(\\d+)");
 
@@ -32,7 +34,11 @@ public void apply(Settings settings) {
 		if (badSemver(settings.getGradle().getGradleVersion()) < badSemver(MINIMUM_GRADLE)) {
 			throw new GradleException("Blowdryer requires Gradle " + MINIMUM_GRADLE + " or newer, this was " + settings.getGradle().getGradleVersion());
 		}
-		Blowdryer.initTempDir(settings.getProviders().systemProperty("java.io.tmpdir").forUseAtConfigurationTime().get());
+		Provider<String> tmpDir = settings.getProviders().systemProperty("java.io.tmpdir");
+		String tmpDirPath = badSemver(settings.getGradle().getGradleVersion()) >= badSemver(STOP_FORUSE_AT_CONFIGURATION_TIME) ? // depends on Gradle version
+				tmpDir.get() : // Gradle 7.4 and later
+				tmpDir.forUseAtConfigurationTime().get(); // before Gradle 7.4
+		Blowdryer.initTempDir(tmpDirPath);
 		settings.getExtensions().create(BlowdryerSetup.NAME, BlowdryerSetup.class, settings.getRootDir());
 	}
 

src/test/java/com/diffplug/blowdryer/BlowdryerPluginTest.java

@@ -20,6 +20,7 @@
 import java.util.Locale;
 import java.util.stream.Collectors;
 import org.assertj.core.api.Assertions;
+import org.gradle.testkit.runner.BuildResult;
 import org.junit.Assume;
 import org.junit.Test;
 
@@ -377,4 +378,11 @@ public void tooOldError() throws IOException {
 		Assertions.assertThat(gradleRunner().withGradleVersion("6.7").buildAndFail().getOutput().replace("\r\n", "\n"))
 				.contains("Blowdryer requires Gradle 6.8 or newer, this was 6.7");
 	}
+
+	@Test
+	public void deprecationError() throws IOException {
+		settingsGithub("test/2/a");
+		BuildResult build = gradleRunner().withGradleVersion("8.5").withArguments("--warning-mode=fail").build();
+		Assertions.assertThat(build.getOutput()).doesNotContain("Provider.forUseAtConfigurationTime method has been deprecated");
+	}
 }