From ec67725ea41ae69453d4ee2624b311746aab3c26 Mon Sep 17 00:00:00 2001
From: Alexander Kriegisch <Alexander@Kriegisch.name>
Date: Mon, 3 Oct 2022 17:17:50 +0200
Subject: Add the first few Java 19 tests

For now, only the "pattern matching for switch" tests from previews 1
and 2 were adjusted to work in preview 3, because guarded patterns were
replaced by 'when' clauses in 'switch' blocks. Therefore, existing test
classes did not compile anymore and had to be replaced by syntactically
upgraded versions with content merged from preview 1 and 2 classes.

Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>
---
 .../java19/SwitchPatternPreview3Aspect.aj          | 88 ++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 tests/features1919/java19/SwitchPatternPreview3Aspect.aj

(limited to 'tests/features1919/java19/SwitchPatternPreview3Aspect.aj')

diff --git a/tests/features1919/java19/SwitchPatternPreview3Aspect.aj b/tests/features1919/java19/SwitchPatternPreview3Aspect.aj
new file mode 100644
index 000000000..ae147dad7
--- /dev/null
+++ b/tests/features1919/java19/SwitchPatternPreview3Aspect.aj
@@ -0,0 +1,88 @@
+import java.util.List;
+import java.util.Locale;
+
+aspect SwitchPatternPreview3Aspect {
+  Object around(Object o) : execution(* doSomethingWithObject(*)) && args(o) {
+    System.out.println(switch (o) {
+      case null      -> "null";
+      case Integer i -> String.format("int %d", i);
+      case Long l    -> String.format("long %d", l);
+      case Double d  -> String.format(Locale.ENGLISH, "double %f", d);
+      case String s  -> String.format("String %s", s);
+      default        -> o.toString();
+    });
+    return proceed(o);
+  }
+
+  before(Shape s) : execution(* doSomethingWithShape(*)) && args(s) {
+    System.out.println(switch (s) {
+      case Circle c when (c.calculateArea() > 100) -> "Large circle";
+      case Circle c -> "Small circle";
+      default -> "Non-circle";
+    });
+  }
+
+  after(S s) : execution(* doSomethingWithSealedClass(*)) && args(s) {
+    System.out.println(switch (s) {
+      case A a -> "Sealed sub-class A";
+      case B b -> "Sealed sub-class B";
+      case C c -> "Sealed sub-record C";
+    });
+  }
+
+  Object around(Integer i): execution(* doSomethingWithInteger(*)) && args(i) {
+    System.out.println(
+      switch (i) {
+        case null -> "value unavailable: " + i;
+        case -1, 1 -> "absolute value 1: " + i;
+        case Integer value when value > 0 -> "positive integer: " + i;
+        default -> "other integer: " + i;
+      }
+    );
+    return proceed(i);
+  }
+}
+
+class Shape {}
+class Rectangle extends Shape {}
+class Circle extends Shape {
+  private final double radius;
+  public Circle(double radius) { this.radius = radius; }
+  double calculateArea() { return Math.PI * radius * radius; }
+}
+
+sealed interface S permits A, B, C {}
+final class A implements S {}
+final class B implements S {}
+record C(int i) implements S {}  // Implicitly final
+
+class Application {
+  public static void main(String[] args) {
+    doSomethingWithObject(null);
+    doSomethingWithObject(123);
+    doSomethingWithObject(999L);
+    doSomethingWithObject(12.34);
+    doSomethingWithObject("foo");
+    doSomethingWithObject(List.of(123, "foo", 999L, 12.34));
+
+    doSomethingWithShape(new Rectangle());
+    doSomethingWithShape(new Circle(5));
+    doSomethingWithShape(new Circle(6));
+
+    doSomethingWithSealedClass(new A());
+    doSomethingWithSealedClass(new B());
+    doSomethingWithSealedClass(new C(5));
+
+    doSomethingWithInteger(-1);
+    doSomethingWithInteger(0);
+    doSomethingWithInteger(42);
+    doSomethingWithInteger(-99);
+    doSomethingWithInteger(Integer.valueOf(123));
+    doSomethingWithInteger(null);
+  }
+
+  public static Object doSomethingWithObject(Object o) { return o; }
+  public static void doSomethingWithSealedClass(S s) {}
+  public static void doSomethingWithShape(Shape s) {}
+  public static Object doSomethingWithInteger(Integer o) { return o; }
+}
-- 
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