Create AssertionFailedError with reason

Author: mpkorstanje

documentation/documentation.gradle.kts

@@ -54,6 +54,11 @@ val tools by sourceSets.creating
 val toolsImplementation by configurations.getting
 
 dependencies {
+	repositories {
+		// TODO: Remove
+		mavenLocal()
+	}
+	
 	implementation(projects.junitJupiterApi) {
 		because("Jupiter API is used in src/main/java")
 	}

gradle/libs.versions.toml

@@ -12,7 +12,7 @@ junit4 = "4.13.2"
 junit4Min = "4.12"
 ktlint = "1.8.0"
 log4j = "2.25.3"
-opentest4j = "1.3.0"
+opentest4j = "1.4.0-SNAPSHOT"
 openTestReporting = "0.2.5"
 snapshotTests = "1.11.0"
 surefire = "3.5.5"

junit-jupiter-api/src/main/java/org/junit/jupiter/api/AssertionFailureBuilder.java

@@ -192,20 +192,33 @@ public void buildAndThrow() throws AssertionFailedError {
 	 */
 	public AssertionFailedError build() {
 		String reason = nullSafeGet(this.reason);
+		var assertionFailedError = new AssertionFailedError( //
+				formatExceptionMessage(reason),  //
+				formatReason(reason), //
+				expected, // 
+				actual, //
+				cause //
+		);
+		maybeTrimStackTrace(assertionFailedError);
+		return assertionFailedError;
+	}
+
+	private @Nullable String formatReason(@Nullable String reason) {
+		if (mismatch) {
+			return  (reason == null ? "" : reason + ", ") + "expected did not match actual";
+		}
+		return reason;
+	}
+
+	private @Nullable String formatExceptionMessage(@Nullable String reason) {
 		if (mismatch && includeValuesInMessage) {
 			reason = (reason == null ? "" : reason + ", ") + formatValues(expected, actual);
 		}
 		String message = nullSafeGet(this.message);
 		if (reason != null) {
 			message = buildPrefix(message) + reason;
 		}
-
-		var assertionFailedError = mismatch //
-				? new AssertionFailedError(message, expected, actual, cause) //
-				: new AssertionFailedError(message, cause);
-
-		maybeTrimStackTrace(assertionFailedError);
-		return assertionFailedError;
+		return message;
 	}
 
 	private void maybeTrimStackTrace(Throwable throwable) {

settings.gradle.kts

@@ -15,6 +15,8 @@ plugins {
 dependencyResolutionManagement {
 	repositories {
 		mavenCentral()
+		// TODO: Remove
+		mavenLocal()
 	}
 }