Move packages, make lists shrink in size, generate lists instead of arrays as the 'primitive' operation (issues with generics)

1 files changed, 45 insertions, 0 deletions

diff --git a/src/test/java/au/id/zancanaro/javacheck/junit/SimpleListOperationsTest.java b/src/test/java/au/id/zancanaro/javacheck/junit/SimpleListOperationsTest.java
new file mode 100644
index 0000000..8a298be
--- /dev/null
+++ b/src/test/java/au/id/zancanaro/javacheck/junit/SimpleListOperationsTest.java
@@ -0,0 +1,45 @@
+package au.id.zancanaro.javacheck.junit;
+
+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.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import static au.id.zancanaro.javacheck.Generators.*;
+import static org.junit.Assert.assertEquals;
+
+@RunWith(Properties.class)
+public class SimpleListOperationsTest {
+
+    @DataSource
+    public static Generator<List<Integer>> listOfIntegers = listOf(integer());
+
+    @DataSource
+    public static Generator<List<String>> listOfStrings = listOf(stringOf(alphaNumericCharacter()));
+
+    @Property(maxSize = 100, runs = 1000)
+    public void sortingIsIdempotent(List<Integer> list) {
+        List<Integer> left = new ArrayList<>(list);
+        Collections.sort(left);
+
+        List<Integer> right = new ArrayList<>(list);
+        Collections.sort(right);
+        Collections.sort(right);
+
+        assertEquals(left, right);
+    }
+
+    @Property(maxSize = 100, runs = 1000)
+    public void reverseIsItsOwnInverse(List<String> list) {
+        List<String> reversed = new ArrayList<>(list);
+        Collections.reverse(reversed);
+        Collections.reverse(reversed);
+
+        assertEquals(list, reversed);
+    }
+}