Add test for new Java string replace operations

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

examples/java/StringReplaceTest.java

@@ -0,0 +1,113 @@
+/*++
+ Copyright (c) 2024 Microsoft Corporation
+
+Module Name:
+
+    StringReplaceTest.java
+
+Abstract:
+
+    Z3 Java API: Test for string replace operations
+
+Author:
+
+    GitHub Copilot 2024-11-04
+
+Notes:
+    
+--*/
+
+import com.microsoft.z3.*;
+
+public class StringReplaceTest {
+    
+    public static void testReplaceAll(Context ctx) throws Z3Exception {
+        System.out.println("Testing mkReplaceAll...");
+        
+        // Create string expressions
+        SeqExpr<CharSort> s = ctx.mkString("hello world hello");
+        SeqExpr<CharSort> src = ctx.mkString("hello");
+        SeqExpr<CharSort> dst = ctx.mkString("goodbye");
+        
+        // Create replace_all expression
+        SeqExpr<CharSort> result = ctx.mkReplaceAll(s, src, dst);
+        
+        // Create a solver and check
+        Solver solver = ctx.mkSolver();
+        SeqExpr<CharSort> expected = ctx.mkString("goodbye world goodbye");
+        solver.add(ctx.mkEq(result, expected));
+        
+        Status status = solver.check();
+        System.out.println("  Status: " + status);
+        
+        if (status == Status.SATISFIABLE) {
+            System.out.println("  PASS: mkReplaceAll works correctly");
+        } else {
+            System.out.println("  FAIL: mkReplaceAll returned unexpected result");
+        }
+    }
+    
+    public static void testReplaceRe(Context ctx) throws Z3Exception {
+        System.out.println("\nTesting mkReplaceRe...");
+        
+        try {
+            // Create string expression
+            SeqExpr<CharSort> s = ctx.mkString("hello world");
+            
+            // Create regular expression that matches "world"
+            ReExpr<SeqSort<CharSort>> worldRe = ctx.mkToRe(ctx.mkString("world"));
+            
+            // Create replace_re expression (replaces first match)
+            SeqExpr<CharSort> dst = ctx.mkString("universe");
+            SeqExpr<CharSort> result = ctx.mkReplaceRe(s, worldRe, dst);
+            
+            System.out.println("  Created expression: " + result);
+            System.out.println("  PASS: mkReplaceRe API method works correctly");
+        } catch (Exception e) {
+            System.out.println("  FAIL: mkReplaceRe threw exception: " + e.getMessage());
+        }
+    }
+    
+    public static void testReplaceReAll(Context ctx) throws Z3Exception {
+        System.out.println("\nTesting mkReplaceReAll...");
+        
+        try {
+            // Create string expression
+            SeqExpr<CharSort> s = ctx.mkString("foo bar foo");
+            
+            // Create regular expression that matches "foo"
+            ReExpr<SeqSort<CharSort>> fooRe = ctx.mkToRe(ctx.mkString("foo"));
+            
+            // Create replace_re_all expression (replaces all matches)
+            SeqExpr<CharSort> dst = ctx.mkString("baz");
+            SeqExpr<CharSort> result = ctx.mkReplaceReAll(s, fooRe, dst);
+            
+            System.out.println("  Created expression: " + result);
+            System.out.println("  PASS: mkReplaceReAll API method works correctly");
+        } catch (Exception e) {
+            System.out.println("  FAIL: mkReplaceReAll threw exception: " + e.getMessage());
+        }
+    }
+    
+    public static void main(String[] args) {
+        try {
+            System.out.println("String Replace Operations Test");
+            System.out.println("==============================\n");
+            
+            // Create Z3 context
+            Context ctx = new Context();
+            
+            // Run tests
+            testReplaceAll(ctx);
+            testReplaceRe(ctx);
+            testReplaceReAll(ctx);
+            
+            System.out.println("\nAll tests completed!");
+            
+            ctx.close();
+        } catch (Exception e) {
+            System.err.println("Error: " + e.getMessage());
+            e.printStackTrace();
+        }
+    }
+}