Add junit-mockito module: 30 runnable JUnit 6.1.3 / Mockito 5.24.0 interview answers

One test per question, each writing and asserting its own transcript under output/.
Covers lifecycle, extensions, parameterized and dynamic tests, mocks vs spies,
verification, strict stubs, static and constructor mocking, and flaky tests.

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01CifR2BE7PBvRy5hT8TS9oz

junit-mockito/scripts/compare-5-vs-6.sh

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+#!/usr/bin/env bash
+# Q2: compares the real junit-jupiter-api 5.14.4 and 6.1.3 jars. Writes output/q02-jar-comparison.txt.
+# Needs JDK (javap, unzip) and Maven. Downloads both jars into the local Maven repository.
+set -euo pipefail
+cd "$(dirname "$0")/.."
+unset JAVA_TOOL_OPTIONS
+REPO="${HOME}/.m2/repository"
+OUT=output/q02-jar-comparison.txt
+TMP="$(mktemp -d)"
+: > "$OUT"
+for v in 5.14.4 6.1.3; do
+  mvn -B -q dependency:get -Dartifact="org.junit.jupiter:junit-jupiter-api:$v" >/dev/null
+  jar="$REPO/org/junit/jupiter/junit-jupiter-api/$v/junit-jupiter-api-$v.jar"
+  mkdir -p "$TMP/$v"
+  unzip -q -o "$jar" 'org/junit/jupiter/api/Test.class' -d "$TMP/$v"
+  major=$(javap -v -cp "$TMP/$v" org.junit.jupiter.api.Test | grep 'major version' | awk '{print $3}')
+  alpha=$(unzip -l "$jar" | grep -c 'MethodOrderer\$Alphanumeric' || true)
+  echo "junit-jupiter-api $v : class-file major version $major (Java $((major-44))), MethodOrderer\$Alphanumeric entries in jar: $alpha" | tee -a "$OUT"
+done
+rm -rf "$TMP"

junit-mockito/scripts/no-agent.sh

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+#!/usr/bin/env bash
+# Q27: runs one Mockito test WITHOUT the -javaagent flag and keeps only the JVM's own warning lines.
+# Writes output/q27-no-agent-warning.txt. Compare with the normal run, which prints none of these.
+set -uo pipefail
+cd "$(dirname "$0")/.."
+unset JAVA_TOOL_OPTIONS
+OUT=output/q27-no-agent-warning.txt
+mvn -B test -Dtest='D_MockitoCoreTest#q18_mockVersusSpy' \
+    -Dmockito.agentArg=-Dlab.no.agent=true 2>&1 \
+  | grep -E '^(WARNING|Mockito is currently self-attaching)|dynamic(ally)? load|byte-buddy|-javaagent|EnableDynamicAgentLoading' \
+  | grep -v -E 'Unsafe|HiddenClassDefiner|guice' \
+  | sed -E "s#/[^ ]*/\.m2/repository#~/.m2/repository#g" > "$OUT"
+cat "$OUT"

junit-mockito/scripts/run-all.sh

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+#!/usr/bin/env bash
+# Regenerates every file in output/ (one per interview question).
+# Requires JDK 25 and Maven. The first run must be online so Maven can fetch plugins and dependencies.
+set -euo pipefail
+cd "$(dirname "$0")/.."
+unset JAVA_TOOL_OPTIONS
+rm -f output/q*.txt
+mvn -B -q test
+./scripts/compare-5-vs-6.sh
+./scripts/no-agent.sh
+echo "done: $(ls output | wc -l) files in output/"