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Commit f6d0d2c1 authored by Connor O'Brien's avatar Connor O'Brien
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KernelCpuUidBpfMapReaderTest: test UID removal with absent UIDs 



The original implementation of
KernelCpuUidBpfMapReader.removeUidsInRange did not work unless data
was present for the first & last UIDs in the range. Add a test case to
verify the fix for this issue & prevent regressions

Test: confirm test passes with fix & fails without it
Bug: 157887803
Change-Id: Icfabb7298dbfb1a7f1b89dadbe33bae0492922b6
Signed-off-by: default avatarConnor O'Brien <connoro@google.com>
parent b3bd77fc

core/tests/coretests/src/com/android/internal/os/KernelCpuUidBpfMapReaderTest.java

+15 −0
Original line number Diff line number Diff line
@@ -179,6 +179,21 @@ public class KernelCpuUidBpfMapReaderTest { 
        testOpenAndReadData(changedData);

    }



    @Test

    public void testRemoveUidsInRange_firstAndLastAbsent() {

        final SparseArray<long[]> data = getTestSparseArray(200, 50);

        data.delete(0);

        data.delete(5);

        mReader.setData(data);

        testOpenAndReadData(data);

        SparseArray<long[]> changedData = new SparseArray<>();

        for (int i = 6; i < 200; i++) {

            changedData.put(i, data.get(i));

        }

        mReader.removeUidsInRange(0, 5);

        testOpenAndReadData(changedData);

    }



    private void testOpenAndReadData(SparseArray<long[]> expectedData) {

        try (BpfMapIterator iter = mReader.open()) {

            long[] actual;