summaryrefslogtreecommitdiff
path: root/src/main
diff options
context:
space:
mode:
Diffstat (limited to 'src/main')
-rw-r--r--src/main/java/au/id/zancanaro/javacheck/Generator.java24
-rw-r--r--src/main/java/au/id/zancanaro/javacheck/Generators.java18
-rw-r--r--src/main/java/au/id/zancanaro/javacheck/ShrinkTree.java (renamed from src/main/java/au/id/zancanaro/javacheck/RoseTree.java)60
-rw-r--r--src/main/java/au/id/zancanaro/javacheck/junit/Properties.java12
4 files changed, 57 insertions, 57 deletions
diff --git a/src/main/java/au/id/zancanaro/javacheck/Generator.java b/src/main/java/au/id/zancanaro/javacheck/Generator.java
index 557cf97..9d88020 100644
--- a/src/main/java/au/id/zancanaro/javacheck/Generator.java
+++ b/src/main/java/au/id/zancanaro/javacheck/Generator.java
@@ -10,7 +10,7 @@ import java.util.function.Function;
* trees in a controlled and deterministic way.
*
* A generator must implement one method: {@link #generate(Random, int)}. The
- * {@link RoseTree} it produces defines both the value to be returned, as well
+ * {@link ShrinkTree} it produces defines both the value to be returned, as well
* as the shrink tree for that value.
*
* Generators form a "monad", and hence have the {@link #map(Function)} and
@@ -23,7 +23,7 @@ import java.util.function.Function;
@SuppressWarnings("unused")
public interface Generator<T> {
/**
- * Return a {@link RoseTree} containing a new random value of the required
+ * Return a {@link ShrinkTree} containing a new random value of the required
* type, as well as its associated shrink tree.
*
* Generators also have an abstract notion of "size". Represented by an
@@ -33,10 +33,10 @@ public interface Generator<T> {
*
* @param random The random source for generation purposes
* @param size An integer specifying how "big" a thing to produce
- * @return The {@link RoseTree} specifying the generated thing and its
+ * @return The {@link ShrinkTree} specifying the generated thing and its
* shrink tree
*/
- RoseTree<T> generate(Random random, int size);
+ ShrinkTree<T> generate(Random random, int size);
/**
* A generator which simply generates the provided value. Does not shrink.
@@ -46,7 +46,7 @@ public interface Generator<T> {
* @return A {@link Generator} which generates the provided value
*/
static <T> Generator<T> pure(T value) {
- return (random, size) -> RoseTree.pure(value);
+ return (random, size) -> ShrinkTree.pure(value);
}
/**
@@ -66,12 +66,12 @@ public interface Generator<T> {
static <T> Generator<List<T>> tuple(Generator<T>... generators) {
return (random, size) -> {
@SuppressWarnings("unchecked")
- RoseTree<T>[] result = (RoseTree<T>[]) new RoseTree[generators.length];
+ ShrinkTree<T>[] result = (ShrinkTree<T>[]) new ShrinkTree[generators.length];
int index = 0;
for (Generator<T> generator : generators) {
result[index++] = generator.generate(random, size);
}
- return RoseTree.zip(Function.identity(), result);
+ return ShrinkTree.zip(Function.identity(), result);
};
}
@@ -81,8 +81,8 @@ public interface Generator<T> {
*
* Shrinking for this type involves attempting to remove terms and shrink
* each subtree in turn, recursively. (If the length must remain fixed then
- * the {@link RoseTree} produced by this generator should be filtered with
- * {@link RoseTree#filter(java.util.function.Predicate)}.
+ * the {@link ShrinkTree} produced by this generator should be filtered with
+ * {@link ShrinkTree#filter(java.util.function.Predicate)}.
*
* @param count The length of the list to generate
* @param generator The generator to use for each term in the generated
@@ -93,11 +93,11 @@ public interface Generator<T> {
static <T> Generator<List<T>> list(int count, Generator<T> generator) {
return (random, size) -> {
@SuppressWarnings("unchecked")
- RoseTree<T>[] result = (RoseTree<T>[]) new RoseTree[count];
+ ShrinkTree<T>[] result = (ShrinkTree<T>[]) new ShrinkTree[count];
for (int i = 0; i < count; ++i) {
result[i] = generator.generate(random, size);
}
- return RoseTree.shrink(Function.identity(), result);
+ return ShrinkTree.shrink(Function.identity(), result);
};
}
@@ -127,7 +127,7 @@ public interface Generator<T> {
* result of this
*/
default <R> Generator<R> flatMap(Function<T, Generator<R>> action) {
- return (random, size) -> RoseTree.join(this.generate(random, size).map(action).map(g -> g.generate(random, size)));
+ return (random, size) -> ShrinkTree.join(this.generate(random, size).map(action).map(g -> g.generate(random, size)));
}
default Iterator<T> sample(Random random, int maxSize) {
diff --git a/src/main/java/au/id/zancanaro/javacheck/Generators.java b/src/main/java/au/id/zancanaro/javacheck/Generators.java
index 4049149..5dee924 100644
--- a/src/main/java/au/id/zancanaro/javacheck/Generators.java
+++ b/src/main/java/au/id/zancanaro/javacheck/Generators.java
@@ -18,7 +18,7 @@ public final class Generators {
public static <T> Generator<T> suchThat(Generator<T> gen, Predicate<T> predicate) {
return (random, size) -> {
- RoseTree<T> result = gen.generate(random, size);
+ ShrinkTree<T> result = gen.generate(random, size);
if (predicate.test(result.getValue())) {
return result.filter(predicate);
} else {
@@ -28,7 +28,7 @@ public final class Generators {
}
public static <T> Generator<T> noShrink(Generator<T> gen) {
- return (random, size) -> new RoseTree<>(
+ return (random, size) -> new ShrinkTree<>(
gen.generate(random, size).getValue(),
Collections.emptyList());
}
@@ -49,15 +49,15 @@ public final class Generators {
public static Generator<Boolean> bool() {
return (random, size) ->
random.nextBoolean() ?
- new RoseTree<>(true, Collections.singletonList(new RoseTree<>(false, Collections.emptyList()))) :
- new RoseTree<>(false, Collections.emptyList());
+ new ShrinkTree<>(true, Collections.singletonList(new ShrinkTree<>(false, Collections.emptyList()))) :
+ new ShrinkTree<>(false, Collections.emptyList());
}
public static Generator<Integer> integer(int lower, int upper) {
return (random, size) -> {
int value = lower + random.nextInt(upper - lower);
int bound = lower > 0 ? lower : (upper < 0 ? upper : 0);
- return new RoseTree<>(value, intShrinkingIterable(value, bound));
+ return new ShrinkTree<>(value, intShrinkingIterable(value, bound));
};
}
@@ -69,8 +69,8 @@ public final class Generators {
return sized(size -> integer(0, size));
}
- private static Iterable<RoseTree<Integer>> intShrinkingIterable(final int value, final int bound) {
- return () -> new Iterator<RoseTree<Integer>>() {
+ private static Iterable<ShrinkTree<Integer>> intShrinkingIterable(final int value, final int bound) {
+ return () -> new Iterator<ShrinkTree<Integer>>() {
int curr = value - bound;
@Override
@@ -79,10 +79,10 @@ public final class Generators {
}
@Override
- public RoseTree<Integer> next() {
+ public ShrinkTree<Integer> next() {
int prevCurr = curr;
curr = curr / 2;
- return new RoseTree<>(value - prevCurr, intShrinkingIterable(value - prevCurr, bound));
+ return new ShrinkTree<>(value - prevCurr, intShrinkingIterable(value - prevCurr, bound));
}
};
}
diff --git a/src/main/java/au/id/zancanaro/javacheck/RoseTree.java b/src/main/java/au/id/zancanaro/javacheck/ShrinkTree.java
index c735b46..a424806 100644
--- a/src/main/java/au/id/zancanaro/javacheck/RoseTree.java
+++ b/src/main/java/au/id/zancanaro/javacheck/ShrinkTree.java
@@ -7,11 +7,11 @@ import java.util.function.Function;
import java.util.function.Predicate;
@SuppressWarnings("unused")
-public class RoseTree<T> {
+public class ShrinkTree<T> {
private final T value;
- private final Iterable<RoseTree<T>> children;
+ private final Iterable<ShrinkTree<T>> children;
- public RoseTree(T value, Iterable<RoseTree<T>> children) {
+ public ShrinkTree(T value, Iterable<ShrinkTree<T>> children) {
this.value = value;
this.children = children;
}
@@ -20,28 +20,28 @@ public class RoseTree<T> {
return value;
}
- public Iterator<RoseTree<T>> getChildren() {
+ public Iterator<ShrinkTree<T>> getChildren() {
return children.iterator();
}
- public static <T> RoseTree<T> pure(T value) {
- return new RoseTree<>(value, Collections.emptyList());
+ public static <T> ShrinkTree<T> pure(T value) {
+ return new ShrinkTree<>(value, Collections.emptyList());
}
- public static <T> RoseTree<T> join(RoseTree<RoseTree<T>> tree) {
- return new RoseTree<>(
+ public static <T> ShrinkTree<T> join(ShrinkTree<ShrinkTree<T>> tree) {
+ return new ShrinkTree<>(
tree.getValue().getValue(),
() -> Iterators.concat(
- Iterators.mappingIterator(RoseTree::join, tree.children.iterator()),
+ Iterators.mappingIterator(ShrinkTree::join, tree.children.iterator()),
tree.getValue().children.iterator()));
}
- private static <T> Iterator<RoseTree<T>[]> permutations(RoseTree<T>[] trees) {
+ private static <T> Iterator<ShrinkTree<T>[]> permutations(ShrinkTree<T>[] trees) {
return Iterators.flatten(
Iterators.rangeIterator(trees.length,
index -> Iterators.mappingIterator(child -> {
@SuppressWarnings("unchecked")
- RoseTree<T>[] result = (RoseTree<T>[]) new RoseTree[trees.length];
+ ShrinkTree<T>[] result = (ShrinkTree<T>[]) new ShrinkTree[trees.length];
for (int i = 0; i < trees.length; ++i) {
result[i] = (i == index ? child : trees[i]);
}
@@ -50,27 +50,27 @@ public class RoseTree<T> {
));
}
- private static <T> List<T> makeHeadList(RoseTree<T>[] trees) {
+ private static <T> List<T> makeHeadList(ShrinkTree<T>[] trees) {
List<T> heads = new ArrayList<>(trees.length);
- for (RoseTree<T> tree : trees) {
+ for (ShrinkTree<T> tree : trees) {
heads.add(tree.getValue());
}
return heads;
}
- public static <T, R> RoseTree<R> zip(Function<List<T>, R> fn, RoseTree<T>[] trees) {
- return new RoseTree<>(
+ public static <T, R> ShrinkTree<R> zip(Function<List<T>, R> fn, ShrinkTree<T>[] trees) {
+ return new ShrinkTree<>(
fn.apply(makeHeadList(trees)),
() -> Iterators.mappingIterator(
- roses -> RoseTree.zip(fn, roses),
- RoseTree.permutations(trees)));
+ shrinks -> ShrinkTree.zip(fn, shrinks),
+ ShrinkTree.permutations(trees)));
}
- private static <T> Iterator<RoseTree<T>[]> removeEach(RoseTree<T>[] trees) {
+ private static <T> Iterator<ShrinkTree<T>[]> removeEach(ShrinkTree<T>[] trees) {
return Iterators.concat(
Iterators.rangeIterator(trees.length, index -> {
@SuppressWarnings("unchecked")
- RoseTree<T>[] result = (RoseTree<T>[]) new RoseTree[trees.length - 1];
+ ShrinkTree<T>[] result = (ShrinkTree<T>[]) new ShrinkTree[trees.length - 1];
for (int i = 0; i < trees.length - 1; ++i) {
result[i] = trees[(i >= index ? i + 1 : i)];
}
@@ -79,27 +79,27 @@ public class RoseTree<T> {
permutations(trees));
}
- public static <T, R> RoseTree<R> shrink(Function<List<T>, R> fn, RoseTree<T>[] trees) {
- return new RoseTree<>(
+ public static <T, R> ShrinkTree<R> shrink(Function<List<T>, R> fn, ShrinkTree<T>[] trees) {
+ return new ShrinkTree<>(
fn.apply(makeHeadList(trees)),
() -> Iterators.mappingIterator(
- roses -> RoseTree.shrink(fn, roses),
- RoseTree.removeEach(trees)));
+ shrinks -> ShrinkTree.shrink(fn, shrinks),
+ ShrinkTree.removeEach(trees)));
}
- public <R> RoseTree<R> map(Function<T, R> f) {
- return new RoseTree<>(
+ public <R> ShrinkTree<R> map(Function<T, R> f) {
+ return new ShrinkTree<>(
f.apply(this.value),
() -> Iterators.mappingIterator(tree -> tree.map(f), this.children.iterator()));
}
- public <R> RoseTree<R> flatMap(Function<T, RoseTree<R>> f) {
- return RoseTree.join(this.map(f));
+ public <R> ShrinkTree<R> flatMap(Function<T, ShrinkTree<R>> f) {
+ return ShrinkTree.join(this.map(f));
}
- public RoseTree<T> filter(Predicate<T> predicate) {
+ public ShrinkTree<T> filter(Predicate<T> predicate) {
if (predicate.test(this.getValue())) {
- return new RoseTree<>(
+ return new ShrinkTree<>(
this.getValue(),
() -> Iterators.mappingIterator(tree -> tree.filter(predicate),
Iterators.filteringIterator(
@@ -119,7 +119,7 @@ public class RoseTree<T> {
public void print(Writer output, Function<T, String> toString) throws IOException {
output.write(toString.apply(this.getValue()));
output.write('[');
- for (RoseTree<T> child : children) {
+ for (ShrinkTree<T> child : children) {
child.print(output, toString);
}
output.write(']');
diff --git a/src/main/java/au/id/zancanaro/javacheck/junit/Properties.java b/src/main/java/au/id/zancanaro/javacheck/junit/Properties.java
index 1e3f502..b1cb375 100644
--- a/src/main/java/au/id/zancanaro/javacheck/junit/Properties.java
+++ b/src/main/java/au/id/zancanaro/javacheck/junit/Properties.java
@@ -1,7 +1,7 @@
package au.id.zancanaro.javacheck.junit;
import au.id.zancanaro.javacheck.Generator;
-import au.id.zancanaro.javacheck.RoseTree;
+import au.id.zancanaro.javacheck.ShrinkTree;
import au.id.zancanaro.javacheck.ShrinkResult;
import au.id.zancanaro.javacheck.annotations.DataSource;
import au.id.zancanaro.javacheck.annotations.Property;
@@ -208,7 +208,7 @@ public class Properties extends BlockJUnit4ClassRunner {
int numTests = property.runs();
for (int i = 0; i < numTests; ++i) {
int size = Math.min(i + 1, maxSize);
- RoseTree<Object[]> tree = generator.generate(random, size);
+ ShrinkTree<Object[]> tree = generator.generate(random, size);
try {
runTest(tree.getValue());
assumptionsViolated = 0;
@@ -225,7 +225,7 @@ public class Properties extends BlockJUnit4ClassRunner {
}
}
- private ShrinkResult shrink(RoseTree<Object[]> failed, Throwable originalEx) {
+ private ShrinkResult shrink(ShrinkTree<Object[]> failed, Throwable originalEx) {
// this array is a mutable container so the shutdown handler can see the new version
ShrinkResult[] smallest = new ShrinkResult[]{
new ShrinkResult(failed.getValue(), originalEx)};
@@ -233,10 +233,10 @@ public class Properties extends BlockJUnit4ClassRunner {
Thread shutdownHandler = makeShutdownHandler(smallest, originalEx);
Runtime.getRuntime().addShutdownHook(shutdownHandler);
- Iterator<RoseTree<Object[]>> trees = failed.getChildren();
+ Iterator<ShrinkTree<Object[]>> trees = failed.getChildren();
Set<List<Object>> seenArgs = new HashSet<>();
while (trees.hasNext()) {
- RoseTree<Object[]> tree = trees.next();
+ ShrinkTree<Object[]> tree = trees.next();
if (seenArgs.add(Arrays.asList(tree.getValue()))) {
try {
runTest(tree.getValue());
@@ -244,7 +244,7 @@ public class Properties extends BlockJUnit4ClassRunner {
// ignore, because it's not useful
} catch (Throwable ex) {
smallest[0] = new ShrinkResult(tree.getValue(), ex);
- Iterator<RoseTree<Object[]>> children = tree.getChildren();
+ Iterator<ShrinkTree<Object[]>> children = tree.getChildren();
if (children.hasNext()) {
trees = children;
} else {
generated by cgit v1.2.3 (git 2.46.2) at 2024-12-27 13:53:42 +0000