| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specic language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "RedactionInfoTest" |
| |
| #include <gtest/gtest.h> |
| |
| #include <memory> |
| #include <ostream> |
| #include <vector> |
| |
| #include "libfuse_jni/RedactionInfo.h" |
| |
| using namespace mediaprovider::fuse; |
| |
| using std::unique_ptr; |
| using std::vector; |
| |
| std::ostream& operator<<(std::ostream& os, const ReadRange& rr) { |
| os << "{ " << rr.start << ", " << rr.size << ", " << rr.is_redaction << " }"; |
| return os; |
| } |
| |
| TEST(RedactionInfoTest, testNoRedactionRanges) { |
| RedactionInfo info(0, nullptr); |
| EXPECT_EQ(0, info.size()); |
| EXPECT_EQ(false, info.isRedactionNeeded()); |
| |
| std::vector<ReadRange> out; |
| info.getReadRanges(0, std::numeric_limits<size_t>::max(), &out); |
| EXPECT_EQ(0, out.size()); |
| } |
| |
| // Test the case where there is 1 redaction range. |
| TEST(RedactionInfoTest, testSingleRedactionRange) { |
| off64_t ranges[2] = { |
| 1, |
| 10, |
| }; |
| |
| RedactionInfo info(1, ranges); |
| EXPECT_EQ(1, info.size()); |
| EXPECT_EQ(true, info.isRedactionNeeded()); |
| |
| // Overlapping ranges |
| std::vector<ReadRange> out; |
| info.getReadRanges(0, 1000, &out); // read offsets [0, 1000) |
| EXPECT_EQ(3, out.size()); |
| EXPECT_EQ(ReadRange(0, 1, false), out[0]); |
| EXPECT_EQ(ReadRange(1, 9, true), out[1]); |
| EXPECT_EQ(ReadRange(10, 990, false), out[2]); |
| |
| out.clear(); |
| info.getReadRanges(0, 5, &out); // read offsets [0, 5) |
| EXPECT_EQ(2, out.size()); |
| EXPECT_EQ(ReadRange(0, 1, false), out[0]); // offsets: [0, 1) len = 1 |
| EXPECT_EQ(ReadRange(1, 4, true), out[1]); // offsets: [1, 5) len = 4 |
| |
| out.clear(); |
| info.getReadRanges(1, 10, &out); // read offsets [1, 11) |
| EXPECT_EQ(2, out.size()); |
| EXPECT_EQ(ReadRange(1, 9, true), out[0]); // offsets: [1, 10) len = 9 |
| EXPECT_EQ(ReadRange(10, 1, false), out[1]); // offsets: [10, 11) len = 1 |
| |
| // Read ranges that start or end with the boundary of the redacted area. |
| out.clear(); |
| info.getReadRanges(5, 5, &out); // read offsets [5, 10) |
| EXPECT_EQ(1, out.size()); |
| EXPECT_EQ(ReadRange(5, 5, true), out[0]); // offsets: [5, 10) len = 5 |
| |
| out.clear(); |
| info.getReadRanges(1, 5, &out); // read offsets [1, 6) |
| EXPECT_EQ(1, out.size()); |
| EXPECT_EQ(ReadRange(1, 5, true), out[0]); // offsets: [1, 6) len = 5 |
| |
| // Read ranges adjoining the redacted area. |
| out.clear(); |
| info.getReadRanges(10, 10, &out); // read offsets [10, 20) |
| EXPECT_EQ(0, out.size()); |
| |
| out.clear(); |
| info.getReadRanges(0, 1, &out); // read offsets [0, 1) |
| EXPECT_EQ(0, out.size()); |
| |
| // Read Range outside the redacted area. |
| out.clear(); |
| info.getReadRanges(200, 10, &out); // read offsets [200, 210) |
| EXPECT_EQ(0, out.size()); |
| } |
| |
| // Multiple redaction ranges within a given area. |
| TEST(RedactionInfoTest, testSortedAndNonOverlappingRedactionRanges) { |
| // [10, 20), [30, 40), [40, 50) |
| off64_t ranges[4] = {10, 20, 30, 40}; |
| |
| RedactionInfo info = RedactionInfo(2, ranges); |
| EXPECT_EQ(2, info.size()); |
| EXPECT_EQ(true, info.isRedactionNeeded()); |
| |
| std::vector<ReadRange> out; |
| info.getReadRanges(0, 40, &out); // read offsets [0, 40) |
| EXPECT_EQ(4, out.size()); |
| EXPECT_EQ(ReadRange(0, 10, false), out[0]); // offsets: [0, 10) len = 10 |
| EXPECT_EQ(ReadRange(10, 10, true), out[1]); // offsets: [10, 20) len = 10 |
| EXPECT_EQ(ReadRange(20, 10, false), out[2]); // offsets: [20, 30) len = 10 |
| EXPECT_EQ(ReadRange(30, 10, true), out[3]); // offsets [30, 40) len = 10 |
| |
| // Read request straddling two ranges. |
| out.clear(); |
| info.getReadRanges(5, 30, &out); // read offsets [5, 35) |
| EXPECT_EQ(4, out.size()); |
| EXPECT_EQ(ReadRange(5, 5, false), out[0]); // offsets: [5, 10) len = 5 |
| EXPECT_EQ(ReadRange(10, 10, true), out[1]); // offsets: [10, 20) len = 10 |
| EXPECT_EQ(ReadRange(20, 10, false), out[2]); // offsets: [20, 30) len = 10 |
| EXPECT_EQ(ReadRange(30, 5, true), out[3]); // offsets [30, 35) len = 5 |
| |
| // Read request overlapping first range only. |
| out.clear(); |
| info.getReadRanges(5, 10, &out); // read offsets [5, 15) |
| EXPECT_EQ(2, out.size()); |
| EXPECT_EQ(ReadRange(5, 5, false), out[0]); // offsets: [5, 10) len = 5 |
| EXPECT_EQ(ReadRange(10, 5, true), out[1]); // offsets: [10, 15) len = 5 |
| |
| // Read request overlapping last range only. |
| out.clear(); |
| info.getReadRanges(35, 10, &out); // read offsets [35, 45) |
| EXPECT_EQ(2, out.size()); |
| EXPECT_EQ(ReadRange(35, 5, true), out[0]); // offsets: [35, 40) len = 5 |
| EXPECT_EQ(ReadRange(40, 5, false), out[1]); // offsets: [40, 45) len = 5 |
| |
| // Read request overlapping no ranges. |
| out.clear(); |
| info.getReadRanges(0, 10, &out); // read offsets [0, 10) |
| EXPECT_EQ(0, out.size()); |
| out.clear(); |
| info.getReadRanges(21, 5, &out); // read offsets [21, 26) |
| EXPECT_EQ(0, out.size()); |
| out.clear(); |
| info.getReadRanges(40, 10, &out); // read offsets [40, 50) |
| EXPECT_EQ(0, out.size()); |
| } |
| |
| // Multiple redaction ranges overlapping with read range. |
| TEST(RedactionInfoTest, testReadRangeOverlappingWithRedactionRanges) { |
| // [10, 20), [30, 40) |
| off64_t ranges[4] = {10, 20, 30, 40}; |
| |
| RedactionInfo info = RedactionInfo(2, ranges); |
| EXPECT_EQ(2, info.size()); |
| EXPECT_EQ(true, info.isRedactionNeeded()); |
| |
| std::vector<ReadRange> out; |
| // Read request overlaps with end of the ranges. |
| info.getReadRanges(20, 20, &out); // read offsets [20, 40) |
| EXPECT_EQ(2, out.size()); |
| EXPECT_EQ(ReadRange(20, 10, false), out[0]); // offsets: [20, 30) len = 10 |
| EXPECT_EQ(ReadRange(30, 10, true), out[1]); // offsets: [30, 40) len = 10 |
| |
| // Read request overlapping with start of the ranges |
| out.clear(); |
| info.getReadRanges(10, 20, &out); // read offsets [10, 30) |
| EXPECT_EQ(2, out.size()); |
| EXPECT_EQ(ReadRange(10, 10, true), out[0]); // offsets: [10, 20) len = 10 |
| EXPECT_EQ(ReadRange(20, 10, false), out[1]); // offsets: [20, 30) len = 10 |
| |
| // Read request overlaps with start of one and end of other range. |
| out.clear(); |
| info.getReadRanges(10, 30, &out); // read offsets [10, 40) |
| EXPECT_EQ(3, out.size()); |
| EXPECT_EQ(ReadRange(10, 10, true), out[0]); // offsets: [10, 20) len = 10 |
| EXPECT_EQ(ReadRange(20, 10, false), out[1]); // offsets: [20, 30) len = 10 |
| EXPECT_EQ(ReadRange(30, 10, true), out[2]); // offsets: [30, 40) len = 10 |
| |
| // Read request overlaps with end of one and start of other range. |
| out.clear(); |
| info.getReadRanges(20, 10, &out); // read offsets [20, 30) |
| EXPECT_EQ(0, out.size()); |
| } |
| |
| TEST(RedactionInfoTest, testRedactionRangesSorted) { |
| off64_t ranges[6] = {30, 40, 50, 60, 10, 20}; |
| |
| RedactionInfo info = RedactionInfo(3, ranges); |
| EXPECT_EQ(3, info.size()); |
| EXPECT_EQ(true, info.isRedactionNeeded()); |
| |
| std::vector<ReadRange> out; |
| info.getReadRanges(0, 60, &out); // read offsets [0, 60) |
| EXPECT_EQ(6, out.size()); |
| EXPECT_EQ(ReadRange(0, 10, false), out[0]); // offsets: [0, 10) len = 10 |
| EXPECT_EQ(ReadRange(10, 10, true), out[1]); // offsets: [10, 20) len = 10 |
| EXPECT_EQ(ReadRange(20, 10, false), out[2]); // offsets: [20, 30) len = 10 |
| EXPECT_EQ(ReadRange(30, 10, true), out[3]); // offsets [30, 40) len = 10 |
| EXPECT_EQ(ReadRange(40, 10, false), out[4]); // offsets [40, 50) len = 10 |
| EXPECT_EQ(ReadRange(50, 10, true), out[5]); // offsets [50, 60) len = 10 |
| |
| // Read request overlapping first range only. |
| out.clear(); |
| info.getReadRanges(5, 10, &out); // read offsets [5, 15) |
| EXPECT_EQ(2, out.size()); |
| EXPECT_EQ(ReadRange(5, 5, false), out[0]); // offsets: [5, 10) len = 5 |
| EXPECT_EQ(ReadRange(10, 5, true), out[1]); // offsets: [10, 15) len = 5 |
| |
| // Read request overlapping last range only. |
| out.clear(); |
| info.getReadRanges(55, 10, &out); // read offsets [55, 65) |
| EXPECT_EQ(2, out.size()); |
| EXPECT_EQ(ReadRange(55, 5, true), out[0]); // offsets: [55, 60) len = 5 |
| EXPECT_EQ(ReadRange(60, 5, false), out[1]); // offsets: [60, 65) len = 5 |
| |
| // Read request overlapping no ranges. |
| out.clear(); |
| info.getReadRanges(0, 10, &out); // read offsets [0, 10) |
| EXPECT_EQ(0, out.size()); |
| out.clear(); |
| info.getReadRanges(60, 10, &out); // read offsets [60, 70) |
| EXPECT_EQ(0, out.size()); |
| } |
| |
| // Test that the ranges are both sorted and merged |
| TEST(RedactionInfoTest, testSortAndMergeRedactionRanges) { |
| // Ranges are: [10, 20), [25, 40), [50, 60) |
| off64_t ranges[8] = {30, 40, 10, 20, 25, 30, 50, 60}; |
| |
| RedactionInfo info = RedactionInfo(4, ranges); |
| EXPECT_EQ(3, info.size()); |
| EXPECT_EQ(true, info.isRedactionNeeded()); |
| |
| std::vector<ReadRange> out; |
| info.getReadRanges(0, 60, &out); // read offsets [0, 60) |
| EXPECT_EQ(6, out.size()); |
| EXPECT_EQ(ReadRange(0, 10, false), out[0]); // offsets: [0, 10) len = 10 |
| EXPECT_EQ(ReadRange(10, 10, true), out[1]); // offsets: [10, 20) len = 10 |
| EXPECT_EQ(ReadRange(20, 5, false), out[2]); // offsets: [20, 25) len = 5 |
| EXPECT_EQ(ReadRange(25, 15, true), out[3]); // offsets [25, 40) len = 15 |
| EXPECT_EQ(ReadRange(40, 10, false), out[4]); // offsets [40, 50) len = 10 |
| EXPECT_EQ(ReadRange(50, 10, true), out[5]); // offsets [50, 60) len = 10 |
| } |
| |
| // Test that the ranges are both sorted and merged when there's an overlap. |
| // |
| // TODO: Can this ever happen ? Will we ever be in a state where we need to |
| // redact exif attributes that have overlapping ranges ? |
| TEST(RedactionInfoTest, testSortAndMergeRedactionRanges_overlap) { |
| // Ranges are: [10, 20), [25, 40), [50, 60) |
| off64_t ranges[8] = {30, 40, 10, 20, 25, 34, 50, 60}; |
| |
| RedactionInfo info = RedactionInfo(4, ranges); |
| EXPECT_EQ(3, info.size()); |
| EXPECT_EQ(true, info.isRedactionNeeded()); |
| |
| std::vector<ReadRange> out; |
| info.getReadRanges(0, 60, &out); // read offsets [0, 60) |
| EXPECT_EQ(6, out.size()); |
| EXPECT_EQ(ReadRange(0, 10, false), out[0]); // offsets: [0, 10) len = 10 |
| EXPECT_EQ(ReadRange(10, 10, true), out[1]); // offsets: [10, 20) len = 10 |
| EXPECT_EQ(ReadRange(20, 5, false), out[2]); // offsets: [20, 25) len = 5 |
| EXPECT_EQ(ReadRange(25, 15, true), out[3]); // offsets [25, 40) len = 15 |
| EXPECT_EQ(ReadRange(40, 10, false), out[4]); // offsets [40, 50) len = 10 |
| EXPECT_EQ(ReadRange(50, 10, true), out[5]); // offsets [50, 60) len = 10 |
| } |
| |
| // WARNING: The tests below assume that merging of ranges happen during |
| // object construction (which is asserted by the check on |info.size()|. |
| // Therefore, we don't write redundant tests for boundary conditions that |
| // we've covered above. If this ever changes, these tests need to be expanded. |
| TEST(RedactionInfoTest, testMergeAllRangesIntoSingleRange) { |
| // Ranges are: [8, 24) |
| off64_t ranges[8] = {10, 20, 8, 14, 14, 24, 12, 16}; |
| |
| RedactionInfo info = RedactionInfo(4, ranges); |
| EXPECT_EQ(1, info.size()); |
| EXPECT_EQ(true, info.isRedactionNeeded()); |
| |
| std::vector<ReadRange> out; |
| info.getReadRanges(0, 30, &out); // read offsets [0, 30) |
| EXPECT_EQ(3, out.size()); |
| EXPECT_EQ(ReadRange(0, 8, false), out[0]); // offsets: [0, 8) len = 8 |
| EXPECT_EQ(ReadRange(8, 16, true), out[1]); // offsets: [8, 24) len = 16 |
| EXPECT_EQ(ReadRange(24, 6, false), out[2]); // offsets: [24, 30) len = 6 |
| |
| // Ranges are: [85, 100) |
| off64_t ranges2[10] = {90, 95, 95, 100, 85, 91, 92, 94, 99, 100}; |
| info = RedactionInfo(5, ranges2); |
| EXPECT_EQ(1, info.size()); |
| EXPECT_EQ(true, info.isRedactionNeeded()); |
| |
| out.clear(); |
| info.getReadRanges(80, 30, &out); // read offsets [80, 110) |
| EXPECT_EQ(3, out.size()); |
| EXPECT_EQ(ReadRange(80, 5, false), out[0]); // offsets: [80, 85) len = 5 |
| EXPECT_EQ(ReadRange(85, 15, true), out[1]); // offsets: [85, 100) len = 15 |
| EXPECT_EQ(ReadRange(100, 10, false), out[2]); // offsets: [100, 110) len = 10 |
| } |
| |
| TEST(RedactionInfoTest, testMergeMultipleRanges) { |
| // Ranges are: [10, 30), [60, 80) |
| off64_t ranges[8] = {20, 30, 10, 20, 70, 80, 60, 70}; |
| |
| RedactionInfo info = RedactionInfo(4, ranges); |
| EXPECT_EQ(2, info.size()); |
| EXPECT_EQ(true, info.isRedactionNeeded()); |
| |
| std::vector<ReadRange> out; |
| info.getReadRanges(0, 100, &out); // read offsets [0, 100) |
| EXPECT_EQ(5, out.size()); |
| EXPECT_EQ(ReadRange(0, 10, false), out[0]); // offsets: [0, 10) len = 10 |
| EXPECT_EQ(ReadRange(10, 20, true), out[1]); // offsets: [10, 30) len = 20 |
| EXPECT_EQ(ReadRange(30, 30, false), out[2]); // offsets: [30, 60) len = 30 |
| EXPECT_EQ(ReadRange(60, 20, true), out[3]); // offsets [60, 80) len = 20 |
| EXPECT_EQ(ReadRange(80, 20, false), out[4]); // offsets [80, 100) len = 20 |
| } |
| |
| // Redaction ranges of size zero. |
| TEST(RedactionInfoTest, testRedactionRangesZeroSize) { |
| // [10, 20), [30, 40) |
| off64_t ranges[6] = {10, 20, 30, 40, 25, 25}; |
| |
| RedactionInfo info = RedactionInfo(3, ranges); |
| EXPECT_EQ(2, info.size()); |
| EXPECT_EQ(true, info.isRedactionNeeded()); |
| |
| // Normal read request, should skip range with zero size |
| std::vector<ReadRange> out; |
| info.getReadRanges(0, 40, &out); // read offsets [0, 40) |
| EXPECT_EQ(4, out.size()); |
| EXPECT_EQ(ReadRange(0, 10, false), out[0]); // offsets: [0, 10) len = 10 |
| EXPECT_EQ(ReadRange(10, 10, true), out[1]); // offsets: [10, 20) len = 10 |
| EXPECT_EQ(ReadRange(20, 10, false), out[2]); // offsets: [20, 30) len = 10 |
| EXPECT_EQ(ReadRange(30, 10, true), out[3]); // offsets [30, 40) len = 10 |
| |
| // Read request starting at offset overlapping with zero size range. |
| out.clear(); |
| info.getReadRanges(25, 10, &out); // read offsets [25, 35) |
| EXPECT_EQ(2, out.size()); |
| EXPECT_EQ(ReadRange(25, 5, false), out[0]); // offsets: [25, 30) len = 5 |
| EXPECT_EQ(ReadRange(30, 5, true), out[1]); // offsets [30, 35) len = 5 |
| |
| // 1 byte read request starting at offset overlapping with zero size range. |
| out.clear(); |
| info.getReadRanges(25, 1, &out); // read offsets [25, 26) |
| EXPECT_EQ(0, out.size()); |
| |
| // Read request ending at offset overlapping with zero size range. |
| out.clear(); |
| info.getReadRanges(0, 25, &out); // read offsets [0, 25) |
| EXPECT_EQ(3, out.size()); |
| EXPECT_EQ(ReadRange(0, 10, false), out[0]); // offsets: [0, 10) len = 10 |
| EXPECT_EQ(ReadRange(10, 10, true), out[1]); // offsets: [10, 20) len = 10 |
| EXPECT_EQ(ReadRange(20, 5, false), out[2]); // offsets: [20, 25) len = 10 |
| |
| // Read request that includes only zero size range |
| out.clear(); |
| info.getReadRanges(20, 10, &out); // read offsets [20, 27) |
| EXPECT_EQ(0, out.size()); |
| } |
| |
| // Single redaction range with zero size |
| TEST(RedactionInfoTest, testSingleRedactionRangesZeroSize) { |
| off64_t ranges[2] = {10, 10}; |
| |
| RedactionInfo info = RedactionInfo(1, ranges); |
| EXPECT_EQ(0, info.size()); |
| EXPECT_EQ(false, info.isRedactionNeeded()); |
| |
| // Normal read request, should skip range with zero size |
| std::vector<ReadRange> out; |
| info.getReadRanges(0, 40, &out); // read offsets [0, 40) |
| EXPECT_EQ(0, out.size()); |
| } |