Change shrinking a bit, add more generators, fix some types, moved suchThat

Shrinking is now done using a "ShrinkStrategy". It's pretty similar to what it
used to be in the end, but instead of generating new ShrinkTree<T>s yourself,
you just generate smaller <T>s, and the generator framework will re-call your
strategy to shrink smaller elements. (So, essentially, ShrinkStrategy.shrink(T
obj) returns an Iterator<T> which then has smaller trees calculated from it.)

Added some more generators. In particular: longs and doubles.

Fixed some types, so now Generator.tuple(integer(), string()) will work. Yay!

Move suchThat to Generator, so now integer().suchThat(x -> x < 10) will work
instead of the old Generators.suchThat(x -> x < 10, integer()), which felt a
bit weird.

2 files changed, 31 insertions, 31 deletions

diff --git a/src/test/java/au/id/zancanaro/javacheck/ListFunctorRulesTest.java b/src/test/java/au/id/zancanaro/javacheck/ListFunctorRulesTest.java
index 4e516a2..b757bcd 100644
--- a/src/test/java/au/id/zancanaro/javacheck/ListFunctorRulesTest.java
+++ b/src/test/java/au/id/zancanaro/javacheck/ListFunctorRulesTest.java
@@ -19,27 +19,27 @@ public class ListFunctorRulesTest {
     private final static int maxSize = 1000;
 
     @DataSource
-    public static Generator<List<Integer>> listOfIntegers = listOf(integer());
+    public static Generator<List<Long>> listOfIntegers = listOf(longInteger());
 
     @DataSource
-    public static Generator<Function<Integer, Integer>> integerFunction =
+    public static Generator<Function<Long, Long>> integerFunction =
             oneOf(
-                    integer().map(ListFunctorRulesTest::plusI),
-                    integer().map(ListFunctorRulesTest::timesI),
-                    integer().map(ListFunctorRulesTest::constantlyI));
+                    longInteger().map(ListFunctorRulesTest::plusI),
+                    longInteger().map(ListFunctorRulesTest::timesI),
+                    longInteger().map(ListFunctorRulesTest::constantlyI));
 
     @Property(maxSize = maxSize, runs = runs)
     public void mappingCompositionsWithStreams(
-            List<Integer> list,
-            Function<Integer, Integer> f,
-            Function<Integer, Integer> g) {
-        List<Integer> left = list.stream()
+            List<Long> list,
+            Function<Long, Long> f,
+            Function<Long, Long> g) {
+        List<Long> left = list.stream()
                 .map(g)
                 .map(f)
                 .collect(Collectors.toList());
 
-        List<Integer> right = list.stream()
-                .map(x -> f.apply(g.apply(x)))
+        List<Long> right = list.stream()
+                .map(f.compose(g))
                 .collect(Collectors.toList());
 
         assertEquals(left, right);
@@ -47,30 +47,30 @@ public class ListFunctorRulesTest {
 
     @Property(maxSize = maxSize, runs = runs)
     public void mappingCompositionsWithIntermediateList(
-            List<Integer> list,
-            Function<Integer, Integer> f,
-            Function<Integer, Integer> g) {
-        List<Integer> intermediate = list.stream().map(g).collect(Collectors.toList());
-        List<Integer> left = intermediate.stream().map(f).collect(Collectors.toList());
-
-        List<Integer> right = list.stream()
-                .map(x -> f.apply(g.apply(x)))
+            List<Long> list,
+            Function<Long, Long> f,
+            Function<Long, Long> g) {
+        List<Long> intermediate = list.stream().map(g).collect(Collectors.toList());
+        List<Long> left = intermediate.stream().map(f).collect(Collectors.toList());
+
+        List<Long> right = list.stream()
+                .map(f.compose(g))
                 .collect(Collectors.toList());
 
         assertEquals(left, right);
     }
 
     @Property(maxSize = maxSize, runs = runs)
-    public void mapIdentityIsIdentity(List<Integer> list) {
-        List<Integer> mapped = list.stream().map(x -> x).collect(Collectors.toList());
+    public void mapIdentityIsIdentity(List<Long> list) {
+        List<Long> mapped = list.stream().map(x -> x).collect(Collectors.toList());
 
         assertEquals(list, mapped);
     }
 
-    private static Function<Integer,Integer> plusI(final int i) {
-        return new Function<Integer, Integer>() {
+    private static Function<Long, Long> plusI(final long i) {
+        return new Function<Long, Long>() {
             @Override
-            public Integer apply(Integer integer) {
+            public Long apply(Long integer) {
                 return i + integer;
             }
 
@@ -81,10 +81,10 @@ public class ListFunctorRulesTest {
         };
     }
 
-    private static Function<Integer,Integer> timesI(final int i) {
-        return new Function<Integer, Integer>() {
+    private static Function<Long, Long> timesI(final long i) {
+        return new Function<Long, Long>() {
             @Override
-            public Integer apply(Integer integer) {
+            public Long apply(Long integer) {
                 return i * integer;
             }
 
@@ -94,10 +94,11 @@ public class ListFunctorRulesTest {
             }
         };
     }
-    private static Function<Integer,Integer> constantlyI(final int i) {
-        return new Function<Integer, Integer>() {
+
+    private static Function<Long, Long> constantlyI(final long i) {
+        return new Function<Long, Long>() {
             @Override
-            public Integer apply(Integer integer) {
+            public Long apply(Long integer) {
                 return i;
             }
 
diff --git a/src/test/java/au/id/zancanaro/javacheck/SimpleListOperationsTest.java b/src/test/java/au/id/zancanaro/javacheck/SimpleListOperationsTest.java
index 972b5b6..8f7b075 100644
--- a/src/test/java/au/id/zancanaro/javacheck/SimpleListOperationsTest.java
+++ b/src/test/java/au/id/zancanaro/javacheck/SimpleListOperationsTest.java
@@ -1,6 +1,5 @@
 package au.id.zancanaro.javacheck;
 
-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;