229-3-37

LegendItem item1 = new LegendItem("Item"); LegendItem item2 = null; try { item2 = (LegendItem) item1.clone(); } catch (CloneNotSupportedException e) { e.printStackTrace(); } assertTrue(item1 != item2); assertTrue(item1.getClass() == item2.getClass()); assertTrue(item1.equals(item2)); // the clone references the same dataset as the original assertTrue(item1.getDataset() == item2.getDataset());
NumberAxis a1 = new NumberAxis("Test"); NumberAxis a2 = null; try { a2 = (NumberAxis) a1.clone(); } catch (CloneNotSupportedException e) { e.printStackTrace(); } assertTrue(a1 != a2); assertTrue(a1.getClass() == a2.getClass()); assertTrue(a1.equals(a2));

Clone fragments detected by clone detection tool
File path: /jfreechart-1.0.10/tests/org/jfree/chart/junit/LegendItemTests.java |  | File path: /jfreechart-1.0.10/tests/org/jfree/chart/axis/junit/NumberAxisTests.java
Method name: `void testCloning()` |  | Method name: `void testCloning()`
Number of AST nodes: 8 |  | Number of AST nodes: 7

1

    LegendItem item1 = new LegendItem("Item");↵

2

            LegendItem item↵

1

    NumberAxis a1 = new NumberAxis("Test");↵

3

    2 = null;↵

2

            NumberAxis a2 = null;↵

4

            try {↵

3

            try {↵

5

                item2 = (LegendItem) item1.clone();↵

4

                a2 = (NumberAxis) a1.clone();↵

6

            }↵

5

            }↵

7

            catch (CloneNotSupportedException e) {↵

6

            catch (CloneNotSupportedException e) {↵

8

                e.printStackTrace();↵

7

                e.printStackTrace();↵

9

            }↵

8

            }↵

10

            assertTrue(item1 != item2);↵

9

            assertTrue(a1 != a2);↵

11

            assertTrue(item1.getClass() == item2.getClass());↵

10

            assertTrue(a1.getClass() == a2.getClass());↵

12

            assertTrue(item1.equals(item2));↵

11

            assertTrue(a1.equals(↵

13

            // the clone references the same dataset as the original↵

14

            assertTrue(item1.getDataset() == item2.getDataset());

12

    a2));

See real code fragment |  | See real code fragment

Summary
Number of common nesting structure subtrees | 1
Number of refactorable cases | 0
Number of non-refactorable cases | 1
Time elapsed for finding largest common nesting structure subtrees (ms) | 0.1
Clones location | Clones are in different classes having the same super class
Number of node comparisons | 34

1. {Non-refactorable}

   Mapping Summary
   Number of mapped statements | 3
   Number of unmapped statements in the first code fragment | 5
   Number of unmapped statements in the second code fragment | 4
   Time elapsed for statement mapping (ms) | 47.8
   Clone type | Type 3

   Mapped Statements
   ID | Statement |  | ID | Statement
   --- | --- | --- | --- | ---

   1

       NumberAxis a1 = new NumberAxis("Test");

   1

       LegendItem item1 = new LegendItem("Item");

   2

       NumberAxis a2 = null;

   2

       LegendItem item2 = null;

   3

       try

   3

       try

   4 | a2 = (NumberAxis)a1.clone();

   Preondition Violations
   Unmatched statement a2=(NumberAxis)a1.clone(); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted

   4

       a2 = (NumberAxis)a1.clone();

   4

       item2 = (LegendItem)item1.clone();

   4 | item2 = (LegendItem)item1.clone();

   Preondition Violations
   Unmatched statement item2=(LegendItem)item1.clone(); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted

   5

       assertTrue(item1 != item2);

   6

       assertTrue(a1.getClass() == a2.getClass());

   6

       assertTrue(item1.getClass() == item2.getClass());

   6 | assertTrue(item1.getClass() == item2.getClass());
   7 | assertTrue(a1.equals(a2));

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   item1.getClass() == item2.getClass() | a1.equals(a2) | TYPE_COMPATIBLE_REPLACEMENT

   7

       assertTrue(a1.equals(a2));

   7

       assertTrue(item1.equals(item2));

   7 | assertTrue(item1.equals(item2));
   5 | assertTrue(a1 != a2);

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   item1.equals(item2) | a1 != a2 | TYPE_COMPATIBLE_REPLACEMENT

   5

       assertTrue(a1 != a2);

   8

       assertTrue(item1.getDataset() == item2.getDataset());

   Precondition Violations (2)
   Row | Violation
   --- | ---
   1 | Unmatched statement a2=(NumberAxis)a1.clone(); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted
   2 | Unmatched statement item2=(LegendItem)item1.clone(); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted