From 20b1226b4eb10e85497862bd73fe9e9a2f05191d Mon Sep 17 00:00:00 2001
From: Carlo Zancanaro <carlo@zancanaro.id.au>
Date: Fri, 5 Jun 2015 14:51:03 +1000
Subject: First cut of a stateful testing framework (it's pretty hacky at the
moment, but all the pieces are there)
---
.../id/zancanaro/javacheck/statem/QueueTest.java | 88 ++++++++++++++++++++++
1 file changed, 88 insertions(+)
create mode 100644 src/test/java/au/id/zancanaro/javacheck/statem/QueueTest.java
(limited to 'src/test/java/au/id/zancanaro/javacheck')
diff --git a/src/test/java/au/id/zancanaro/javacheck/statem/QueueTest.java b/src/test/java/au/id/zancanaro/javacheck/statem/QueueTest.java
new file mode 100644
index 0000000..4cd6345
--- /dev/null
+++ b/src/test/java/au/id/zancanaro/javacheck/statem/QueueTest.java
@@ -0,0 +1,88 @@
+package au.id.zancanaro.javacheck.statem;
+
+import au.id.zancanaro.javacheck.Generator;
+import au.id.zancanaro.javacheck.annotations.DataSource;
+import au.id.zancanaro.javacheck.annotations.Property;
+import au.id.zancanaro.javacheck.junit.Properties;
+import org.junit.runner.RunWith;
+
+import java.util.*;
+
+import static au.id.zancanaro.javacheck.Generator.pure;
+import static au.id.zancanaro.javacheck.Generators.integer;
+import static au.id.zancanaro.javacheck.Generators.oneOf;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+@RunWith(Properties.class)
+public class QueueTest {
+ private static final Queue<Integer> queue = new LinkedList<>();
+
+ @DataSource
+ public static Generator<CommandList<List<Integer>>> commandGenerator =
+ new CommandListGenerator<>(state -> oneOf(
+ pure(new QueuePushCommand()),
+ pure(new QueuePopCommand())
+ ));
+
+ @Property
+ public void test(CommandList<List<Integer>> commands) {
+ queue.clear();
+ CommandResult<List<Integer>> result = commands.run(null);
+ assertFalse(result.isFailed());
+ }
+
+ private static class QueuePushCommand extends Command<List<Integer>, Integer, Void> {
+ @Override
+ public Generator<Integer> argsGenerator(List<Integer> integers) {
+ return integer();
+ }
+
+ @Override
+ public Void runCommand(Integer integer) {
+ queue.offer(integer);
+ return null;
+ }
+
+ @Override
+ public List<Integer> nextState(List<Integer> integers, Integer integer, CommandValue<Void> result) {
+ List<Integer> nextState = new ArrayList<>(integers == null ? new ArrayList<>() : integers);
+ nextState.add(integer);
+ return nextState;
+ }
+
+ @Override
+ public String toString() {
+ return "push";
+ }
+ }
+
+ private static class QueuePopCommand extends Command<List<Integer>, Void, Integer> {
+ @Override
+ public boolean preCondition(List<Integer> integers, Void aVoid) {
+ return integers != null && !integers.isEmpty();
+ }
+
+ @Override
+ public Integer runCommand(Void aVoid) {
+ return queue.poll();
+ }
+
+ @Override
+ public boolean postCondition(List<Integer> oldState, List<Integer> newState, Void aVoid, Integer integer) {
+ return Objects.equals(integer, oldState.get(0));
+ }
+
+ @Override
+ public List<Integer> nextState(List<Integer> integers, Void aVoid, CommandValue<Integer> result) {
+ List<Integer> nextState = new ArrayList<>(integers == null ? new ArrayList<>() : integers);
+ nextState.remove(0);
+ return nextState;
+ }
+
+ @Override
+ public String toString() {
+ return "pop";
+ }
+ }
+}
--
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