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23 
24 /*
25 @test
26 @bug 8004969
27 @summary Lambda deserialization
28 
29 */
30 
31 import java.io.*;
32 
33 public class T8004969 implements Serializable {
34 
35     static int assertionCount = 0;
36 
assertTrue(boolean cond)37     static void assertTrue(boolean cond) {
38         assertionCount++;
39         if (!cond)
40             throw new AssertionError();
41     }
42 
mm(String s)43     static String mm(String s) { return "mref" + s; }
44 
45     String aField = "aF";
46 
main(String[] args)47     public static void main(String[] args) throws Exception {
48         (new T8004969()).doit();
49     }
50 
doit()51     public void doit() throws Exception {
52         String aLocal = "aL";
53         int anInt = 99;
54 
55         try {
56             // Write lambdas out
57             ByteArrayOutputStream baos = new ByteArrayOutputStream();
58             ObjectOutput out = new ObjectOutputStream(baos);
59 
60             write(out, z -> "[" + z + "]" );
61             write(out, z -> { String x = z + z; return x + x; } );
62             write(out, T8004969::mm );
63             write(out, z -> (new LSI() { public String convert(String x) { return "*"+x; }} ).convert(z) );
64             write(out, z -> aField + z );
65             write(out, z -> aLocal + z );
66             write(out, z -> z + anInt );
67             out.flush();
68             out.close();
69 
70             // Read them back
71             ByteArrayInputStream bais =
72                 new ByteArrayInputStream(baos.toByteArray());
73             ObjectInputStream in = new ObjectInputStream(bais);
74             readAssert(in, "[X]");
75             readAssert(in, "XXXX");
76             readAssert(in, "mrefX");
77             readAssert(in, "*X");
78             readAssert(in, "aFX");
79             readAssert(in, "aLX");
80             readAssert(in, "X99");
81             in.close();
82         } catch (IOException e) {
83             e.printStackTrace();
84             throw e;
85         }
86         assertTrue(assertionCount == 7);
87     }
88 
write(ObjectOutput out, LSI lamb)89     static void write(ObjectOutput out, LSI lamb) throws IOException {
90         out.writeObject(lamb);
91     }
92 
readAssert(ObjectInputStream in, String expected)93     static void readAssert(ObjectInputStream in, String expected)  throws IOException, ClassNotFoundException {
94         LSI ls = (LSI) in.readObject();
95         String result = ls.convert("X");
96         System.out.printf("Result: %s\n", result);
97         assertTrue(result.equals(expected));
98     }
99 }
100 
101 interface LSI extends Serializable {
convert(String x)102     String convert(String x);
103 }
104