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src/test/java/org/apache/commons/io/IOUtilsTest.java

Lines changed: 15 additions & 20 deletions
Original file line numberDiff line numberDiff line change
@@ -1730,6 +1730,21 @@ void testToByteArray_String() throws Exception {
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}
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}
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@Test
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void testToByteArray_ThrowsIOExceptionOnHugeStream() {
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try (MockedStatic<IOUtils> utils = Mockito.mockStatic(IOUtils.class, Mockito.CALLS_REAL_METHODS)) {
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// Prepare the mocks
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final UnsynchronizedByteArrayOutputStream mockOutputStream = mock(UnsynchronizedByteArrayOutputStream.class);
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utils.when(() -> IOUtils.copyToOutputStream(Mockito.any(InputStream.class), Mockito.anyLong(), Mockito.anyInt())).thenReturn(mockOutputStream);
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when(mockOutputStream.size()).thenReturn(IOUtils.SOFT_MAX_ARRAY_LENGTH + 1);
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// Test and check
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final InputStream mockInputStream = mock(InputStream.class);
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final IOException exception = assertThrows(IOException.class, () -> IOUtils.toByteArray(mockInputStream));
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assertTrue(exception.getMessage().contains(String.format("%,d", IOUtils.SOFT_MAX_ARRAY_LENGTH)),
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"Exception message does not contain the maximum length");
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}
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}
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@Test
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void testToByteArray_URI() throws Exception {
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final URI url = testFile.toURI();
@@ -1969,24 +1984,4 @@ void testWriteLittleString() throws IOException {
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}
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}
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}
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@Test
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void testToByteArray_ThrowsIOExceptionOnHugeStream() {
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try (MockedStatic<IOUtils> utils = Mockito.mockStatic(IOUtils.class, Mockito.CALLS_REAL_METHODS)) {
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// Prepare the mocks
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final UnsynchronizedByteArrayOutputStream mockOutputStream =
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mock(UnsynchronizedByteArrayOutputStream.class);
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utils.when(() -> IOUtils.copyToOutputStream(
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Mockito.any(InputStream.class), Mockito.anyLong(), Mockito.anyInt()))
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.thenReturn(mockOutputStream);
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when(mockOutputStream.size()).thenReturn(IOUtils.SOFT_MAX_ARRAY_LENGTH + 1);
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// Test and check
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final InputStream mockInputStream = mock(InputStream.class);
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final IOException exception = assertThrows(IOException.class, () -> IOUtils.toByteArray(mockInputStream));
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assertTrue(
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exception.getMessage().contains(String.format("%,d", IOUtils.SOFT_MAX_ARRAY_LENGTH)),
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"Exception message does not contain the maximum length");
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}
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}
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}

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