Don't throw exception on empty line in CPUs file.

Empty line in CPUs file is a valid use case and the CpuInfoReader must
not throw exception. It should gracefully handle this case.

Test: atest CpuInfoReaderTest
Fixes: 284537086
Change-Id: I9d1b97c9ff0791d1ac49d333cd75656432ccabe2

24 files changed, 146 insertions, 3 deletions

diff --git a/services/core/java/com/android/server/cpu/CpuInfoReader.java b/services/core/java/com/android/server/cpu/CpuInfoReader.java
index 70d7bde2e53a..3026810ec59a 100644
--- a/services/core/java/com/android/server/cpu/CpuInfoReader.java
+++ b/services/core/java/com/android/server/cpu/CpuInfoReader.java
@@ -593,9 +593,12 @@ public final class CpuInfoReader {
             List<String> lines = Files.readAllLines(file.toPath());
             IntArray cpuCores = new IntArray(0);
             for (int i = 0; i < lines.size(); i++) {
-                String line = lines.get(i);
-                String[] pairs = line.contains(",") ? line.trim().split(",")
-                        : line.trim().split(" ");
+                String line = lines.get(i).trim();
+                if (line.isEmpty()) {
+                    continue;
+                }
+                String[] pairs = line.contains(",") ? line.split(",")
+                        : line.split(" ");
                 for (int j = 0; j < pairs.length; j++) {
                     String[] minMaxPairs = pairs[j].split("-");
                     if (minMaxPairs.length >= 2) {
@@ -615,6 +618,9 @@ public final class CpuInfoReader {
                 }
             }
             return cpuCores;
+        } catch (NumberFormatException e) {
+            Slogf.e(TAG, e, "Failed to read CPU cores from %s due to incorrect file format",
+                    file.getAbsolutePath());
         } catch (Exception e) {
             Slogf.e(TAG, e, "Failed to read CPU cores from %s", file.getAbsolutePath());
         }
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy0/affected_cpus b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy0/affected_cpus
new file mode 100644
index 000000000000..8b137891791f
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy0/affected_cpus
@@ -0,0 +1 @@
+
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy0/related_cpus b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy0/related_cpus
new file mode 100644
index 000000000000..c227083464fb
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy0/related_cpus
@@ -0,0 +1 @@
+0
\ No newline at end of file
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy0/scaling_cur_freq b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy0/scaling_cur_freq
new file mode 100644
index 000000000000..dadd9737778d
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy0/scaling_cur_freq
@@ -0,0 +1 @@
+1230000
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy0/scaling_max_freq b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy0/scaling_max_freq
new file mode 100644
index 000000000000..a93d6f7b2c09
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy0/scaling_max_freq
@@ -0,0 +1 @@
+2500000
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy0/stats/time_in_state b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy0/stats/time_in_state
new file mode 100644
index 000000000000..5121f6661a7e
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy0/stats/time_in_state
@@ -0,0 +1,4 @@
+200000 500
+350000 500
+500000 1000
+2500000 100
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy1/affected_cpus b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy1/affected_cpus
new file mode 100644
index 000000000000..d00491fd7e5b
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy1/affected_cpus
@@ -0,0 +1 @@
+1
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy1/related_cpus b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy1/related_cpus
new file mode 100644
index 000000000000..56a6051ca2b0
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy1/related_cpus
@@ -0,0 +1 @@
+1
\ No newline at end of file
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy1/scaling_cur_freq b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy1/scaling_cur_freq
new file mode 100644
index 000000000000..2bc4ce96ec98
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy1/scaling_cur_freq
@@ -0,0 +1 @@
+1450000
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy1/scaling_max_freq b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy1/scaling_max_freq
new file mode 100644
index 000000000000..c754f1a461ab
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy1/scaling_max_freq
@@ -0,0 +1 @@
+2800000
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy1/stats/time_in_state b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy1/stats/time_in_state
new file mode 100644
index 000000000000..7ed12cfce58d
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_affected_cpus/policy1/stats/time_in_state
@@ -0,0 +1,4 @@
+200000 500
+350000 500
+500000 1000
+2800000 100
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy0/affected_cpus b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy0/affected_cpus
new file mode 100644
index 000000000000..573541ac9702
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy0/affected_cpus
@@ -0,0 +1 @@
+0
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy0/related_cpus b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy0/related_cpus
new file mode 100644
index 000000000000..8b137891791f
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy0/related_cpus
@@ -0,0 +1 @@
+
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy0/scaling_cur_freq b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy0/scaling_cur_freq
new file mode 100644
index 000000000000..dadd9737778d
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy0/scaling_cur_freq
@@ -0,0 +1 @@
+1230000
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy0/scaling_max_freq b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy0/scaling_max_freq
new file mode 100644
index 000000000000..a93d6f7b2c09
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy0/scaling_max_freq
@@ -0,0 +1 @@
+2500000
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy0/stats/time_in_state b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy0/stats/time_in_state
new file mode 100644
index 000000000000..5121f6661a7e
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy0/stats/time_in_state
@@ -0,0 +1,4 @@
+200000 500
+350000 500
+500000 1000
+2500000 100
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy1/affected_cpus b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy1/affected_cpus
new file mode 100644
index 000000000000..d00491fd7e5b
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy1/affected_cpus
@@ -0,0 +1 @@
+1
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy1/related_cpus b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy1/related_cpus
new file mode 100644
index 000000000000..56a6051ca2b0
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy1/related_cpus
@@ -0,0 +1 @@
+1
\ No newline at end of file
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy1/scaling_cur_freq b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy1/scaling_cur_freq
new file mode 100644
index 000000000000..2bc4ce96ec98
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy1/scaling_cur_freq
@@ -0,0 +1 @@
+1450000
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy1/scaling_max_freq b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy1/scaling_max_freq
new file mode 100644
index 000000000000..c754f1a461ab
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy1/scaling_max_freq
@@ -0,0 +1 @@
+2800000
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy1/stats/time_in_state b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy1/stats/time_in_state
new file mode 100644
index 000000000000..7ed12cfce58d
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpufreq_with_empty_related_cpus/policy1/stats/time_in_state
@@ -0,0 +1,4 @@
+200000 500
+350000 500
+500000 1000
+2800000 100
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpuset_with_empty_cpus/background/cpus b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpuset_with_empty_cpus/background/cpus
new file mode 100644
index 000000000000..8b137891791f
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpuset_with_empty_cpus/background/cpus
@@ -0,0 +1 @@
+
diff --git a/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpuset_with_empty_cpus/top-app/cpus b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpuset_with_empty_cpus/top-app/cpus
new file mode 100644
index 000000000000..40c7bb2f1a2a
--- /dev/null
+++ b/services/tests/mockingservicestests/assets/CpuInfoReaderTest/valid_cpuset_with_empty_cpus/top-app/cpus
@@ -0,0 +1 @@
+0-3
diff --git a/services/tests/mockingservicestests/src/com/android/server/cpu/CpuInfoReaderTest.java b/services/tests/mockingservicestests/src/com/android/server/cpu/CpuInfoReaderTest.java
index 04f6f8b2e9f0..563b89e7252e 100644
--- a/services/tests/mockingservicestests/src/com/android/server/cpu/CpuInfoReaderTest.java
+++ b/services/tests/mockingservicestests/src/com/android/server/cpu/CpuInfoReaderTest.java
@@ -48,6 +48,11 @@ public final class CpuInfoReaderTest extends ExpectableTestCase {
     private static final String TAG = CpuInfoReaderTest.class.getSimpleName();
     private static final String ROOT_DIR_NAME = "CpuInfoReaderTest";
     private static final String VALID_CPUSET_DIR = "valid_cpuset";
+    private static final String VALID_CPUSET_WITH_EMPTY_CPUS = "valid_cpuset_with_empty_cpus";
+    private static final String VALID_CPUFREQ_WITH_EMPTY_AFFECTED_CPUS =
+            "valid_cpufreq_with_empty_affected_cpus";
+    private static final String VALID_CPUFREQ_WITH_EMPTY_RELATED_CPUS =
+            "valid_cpufreq_with_empty_related_cpus";
     private static final String VALID_CPUFREQ_WITH_TIME_IN_STATE_DIR =
             "valid_cpufreq_with_time_in_state";
     private static final String VALID_CPUFREQ_WITH_TIME_IN_STATE_2_DIR =
@@ -403,6 +408,104 @@ public final class CpuInfoReaderTest extends ExpectableTestCase {
     }
 
     @Test
+    public void testReadCpuInfoWithEmptyRelatedCpus() throws Exception {
+        CpuInfoReader cpuInfoReader = newCpuInfoReader(getCacheFile(VALID_CPUSET_DIR),
+                getCacheFile(VALID_CPUFREQ_WITH_EMPTY_RELATED_CPUS),
+                getCacheFile(VALID_PROC_STAT));
+
+        SparseArray<CpuInfoReader.CpuInfo> actualCpuInfos = cpuInfoReader.readCpuInfos();
+        SparseArray<CpuInfoReader.CpuInfo> expectedCpuInfos = new SparseArray<>();
+
+        expectedCpuInfos.append(1, new CpuInfoReader.CpuInfo(/* cpuCore= */ 1,
+                FLAG_CPUSET_CATEGORY_TOP_APP, /* isOnline= */ true, /* curCpuFreqKHz= */ 1_450_000,
+                /* maxCpuFreqKHz= */ 2_800_000, /* avgTimeInStateCpuFreqKHz= */ 502_380,
+                /* normalizedAvailableCpuFreqKHz= */ 2_693_525,
+                new CpuInfoReader.CpuUsageStats(/* userTimeMillis= */ 28_949_280,
+                        /* niceTimeMillis= */ 7_799_450, /* systemTimeMillis= */ 54_004_020,
+                        /* idleTimeMillis= */ 402_707_120, /* iowaitTimeMillis= */ 1_186_960,
+                        /* irqTimeMillis= */ 14_786_940, /* softirqTimeMillis= */ 1_498_130,
+                        /* stealTimeMillis= */ 78_780, /* guestTimeMillis= */ 0,
+                        /* guestNiceTimeMillis= */ 0)));
+
+        compareCpuInfos("CPU infos with policy 0 containing an empty related_cpus file",
+                expectedCpuInfos, actualCpuInfos);
+    }
+
+    @Test
+    public void testReadCpuInfoWithEmptyCpusetCpus() throws Exception {
+        CpuInfoReader cpuInfoReader = newCpuInfoReader(getCacheFile(VALID_CPUSET_WITH_EMPTY_CPUS),
+                getCacheFile(VALID_CPUFREQ_WITH_TIME_IN_STATE_DIR),
+                getCacheFile(VALID_PROC_STAT));
+
+        SparseArray<CpuInfoReader.CpuInfo> actualCpuInfos = cpuInfoReader.readCpuInfos();
+        SparseArray<CpuInfoReader.CpuInfo> expectedCpuInfos = new SparseArray<>();
+        expectedCpuInfos.append(0, new CpuInfoReader.CpuInfo(/* cpuCore= */ 0,
+                FLAG_CPUSET_CATEGORY_TOP_APP, /* isOnline= */ true, /* curCpuFreqKHz= */ 1_230_000,
+                /* maxCpuFreqKHz= */ 2_500_000, /* avgTimeInStateCpuFreqKHz= */ 488_095,
+                new CpuInfoReader.CpuUsageStats(/* userTimeMillis= */ 32_249_610,
+                        /* niceTimeMillis= */ 7_950_930, /* systemTimeMillis= */ 52_227_050,
+                        /* idleTimeMillis= */ 409_036_950, /* iowaitTimeMillis= */ 1_322_810,
+                        /* irqTimeMillis= */ 8_146_740, /* softirqTimeMillis= */ 428_970,
+                        /* stealTimeMillis= */ 81_950, /* guestTimeMillis= */ 0,
+                        /* guestNiceTimeMillis= */ 0)));
+        expectedCpuInfos.append(1, new CpuInfoReader.CpuInfo(/* cpuCore= */ 1,
+                FLAG_CPUSET_CATEGORY_TOP_APP, /* isOnline= */ true, /* curCpuFreqKHz= */ 1_450_000,
+                /* maxCpuFreqKHz= */ 2_800_000, /* avgTimeInStateCpuFreqKHz= */ 502_380,
+                new CpuInfoReader.CpuUsageStats(/* userTimeMillis= */ 28_949_280,
+                        /* niceTimeMillis= */ 7_799_450, /* systemTimeMillis= */ 54_004_020,
+                        /* idleTimeMillis= */ 402_707_120, /* iowaitTimeMillis= */ 1_186_960,
+                        /* irqTimeMillis= */ 14_786_940, /* softirqTimeMillis= */ 1_498_130,
+                        /* stealTimeMillis= */ 78_780, /* guestTimeMillis= */ 0,
+                        /* guestNiceTimeMillis= */ 0)));
+        expectedCpuInfos.append(2, new CpuInfoReader.CpuInfo(/* cpuCore= */ 2,
+                FLAG_CPUSET_CATEGORY_TOP_APP, /* isOnline= */ true, /* curCpuFreqKHz= */ 1_000_000,
+                /* maxCpuFreqKHz= */ 2_000_000, /* avgTimeInStateCpuFreqKHz= */ 464_285,
+                new CpuInfoReader.CpuUsageStats(/* userTimeMillis= */ 28_959_280,
+                        /* niceTimeMillis= */ 7_789_450, /* systemTimeMillis= */ 54_014_020,
+                        /* idleTimeMillis= */ 402_717_120, /* iowaitTimeMillis= */ 1_166_960,
+                        /* irqTimeMillis= */ 14_796_940, /* softirqTimeMillis= */ 1_478_130,
+                        /* stealTimeMillis= */ 88_780, /* guestTimeMillis= */ 0,
+                        /* guestNiceTimeMillis= */ 0)));
+        expectedCpuInfos.append(3, new CpuInfoReader.CpuInfo(/* cpuCore= */ 3,
+                FLAG_CPUSET_CATEGORY_TOP_APP, /* isOnline= */ true, /* curCpuFreqKHz= */ 1_000_000,
+                /* maxCpuFreqKHz= */ 2_000_000, /* avgTimeInStateCpuFreqKHz= */ 464_285,
+                /* normalizedAvailableCpuFreqKHz= */ 1_907_125,
+                new CpuInfoReader.CpuUsageStats(/* userTimeMillis= */ 32_349_610,
+                        /* niceTimeMillis= */ 7_850_930, /* systemTimeMillis= */ 52_127_050,
+                        /* idleTimeMillis= */ 409_136_950, /* iowaitTimeMillis= */ 1_332_810,
+                        /* irqTimeMillis= */ 8_136_740, /* softirqTimeMillis= */ 438_970,
+                        /* stealTimeMillis= */ 71_950, /* guestTimeMillis= */ 0,
+                        /* guestNiceTimeMillis= */ 0)));
+
+        compareCpuInfos("CPU infos with empty background cpu set", expectedCpuInfos,
+                actualCpuInfos);
+    }
+
+    @Test
+    public void testReadCpuInfoWithEmptyAffectedCpus() throws Exception {
+        CpuInfoReader cpuInfoReader = newCpuInfoReader(getCacheFile(VALID_CPUSET_DIR),
+                getCacheFile(VALID_CPUFREQ_WITH_EMPTY_AFFECTED_CPUS),
+                getCacheFile(VALID_PROC_STAT));
+
+        SparseArray<CpuInfoReader.CpuInfo> actualCpuInfos = cpuInfoReader.readCpuInfos();
+        SparseArray<CpuInfoReader.CpuInfo> expectedCpuInfos = new SparseArray<>();
+
+        expectedCpuInfos.append(1, new CpuInfoReader.CpuInfo(/* cpuCore= */ 1,
+                FLAG_CPUSET_CATEGORY_TOP_APP, /* isOnline= */ true, /* curCpuFreqKHz= */ 1_450_000,
+                /* maxCpuFreqKHz= */ 2_800_000, /* avgTimeInStateCpuFreqKHz= */ 502_380,
+                /* normalizedAvailableCpuFreqKHz= */ 2_693_525,
+                new CpuInfoReader.CpuUsageStats(/* userTimeMillis= */ 28_949_280,
+                        /* niceTimeMillis= */ 7_799_450, /* systemTimeMillis= */ 54_004_020,
+                        /* idleTimeMillis= */ 402_707_120, /* iowaitTimeMillis= */ 1_186_960,
+                        /* irqTimeMillis= */ 14_786_940, /* softirqTimeMillis= */ 1_498_130,
+                        /* stealTimeMillis= */ 78_780, /* guestTimeMillis= */ 0,
+                        /* guestNiceTimeMillis= */ 0)));
+
+        compareCpuInfos("CPU infos with policy 0 containing an empty affected_cpus file",
+                expectedCpuInfos, actualCpuInfos);
+    }
+
+    @Test
     public void testReadCpuInfoWithEmptyProcStat() throws Exception {
         File emptyFile = getCacheFile(EMPTY_FILE);
         assertWithMessage("Create empty file %s", emptyFile).that(emptyFile.createNewFile())