Merge pull request #5947

36cba8f Alert if it is very likely we are getting a bad chain (Gavin Andresen)

1 files changed, 64 insertions, 0 deletions

diff --git a/src/test/alert_tests.cpp b/src/test/alert_tests.cpp
index 6b6df5199a..cd5b416bd0 100644
--- a/src/test/alert_tests.cpp
+++ b/src/test/alert_tests.cpp
@@ -7,10 +7,13 @@
 //
 
 #include "alert.h"
+#include "chain.h"
+#include "chainparams.h"
 #include "clientversion.h"
 #include "data/alertTests.raw.h"
 
 #include "chainparams.h"
+#include "main.h"
 #include "serialize.h"
 #include "streams.h"
 #include "util.h"
@@ -193,4 +196,65 @@ BOOST_AUTO_TEST_CASE(AlertNotify)
     SetMockTime(0);
 }
 
+static bool falseFunc() { return false; }
+
+BOOST_AUTO_TEST_CASE(PartitionAlert)
+{
+    // Test PartitionCheck
+    CCriticalSection csDummy;
+    CChain chainDummy;
+    CBlockIndex indexDummy[100];
+    CChainParams& params = Params(CBaseChainParams::MAIN);
+    int64_t nPowTargetSpacing = params.GetConsensus().nPowTargetSpacing;
+
+    // Generate fake blockchain timestamps relative to
+    // an arbitrary time:
+    int64_t now = 1427379054;
+    SetMockTime(now);
+    for (int i = 0; i < 100; i++)
+    {
+        indexDummy[i].phashBlock = NULL;
+        if (i == 0) indexDummy[i].pprev = NULL;
+        else indexDummy[i].pprev = &indexDummy[i-1];
+        indexDummy[i].nHeight = i;
+        indexDummy[i].nTime = now - (100-i)*nPowTargetSpacing;
+        // Other members don't matter, the partition check code doesn't
+        // use them
+    }
+    chainDummy.SetTip(&indexDummy[99]);
+
+    // Test 1: chain with blocks every nPowTargetSpacing seconds,
+    // as normal, no worries:
+    PartitionCheck(falseFunc, csDummy, chainDummy, nPowTargetSpacing);
+    BOOST_CHECK(strMiscWarning.empty());
+
+    // Test 2: go 3.5 hours without a block, expect a warning:
+    now += 3*60*60+30*60;
+    SetMockTime(now);
+    PartitionCheck(falseFunc, csDummy, chainDummy, nPowTargetSpacing);
+    BOOST_CHECK(!strMiscWarning.empty());
+    BOOST_TEST_MESSAGE(std::string("Got alert text: ")+strMiscWarning);
+    strMiscWarning = "";
+
+    // Test 3: test the "partition alerts only go off once per day"
+    // code:
+    now += 60*10;
+    SetMockTime(now);
+    PartitionCheck(falseFunc, csDummy, chainDummy, nPowTargetSpacing);
+    BOOST_CHECK(strMiscWarning.empty());
+
+    // Test 4: get 2.5 times as many blocks as expected:
+    now += 60*60*24; // Pretend it is a day later
+    SetMockTime(now);
+    int64_t quickSpacing = nPowTargetSpacing*2/5;
+    for (int i = 0; i < 100; i++) // Tweak chain timestamps:
+        indexDummy[i].nTime = now - (100-i)*quickSpacing;
+    PartitionCheck(falseFunc, csDummy, chainDummy, nPowTargetSpacing);
+    BOOST_CHECK(!strMiscWarning.empty());
+    BOOST_TEST_MESSAGE(std::string("Got alert text: ")+strMiscWarning);
+    strMiscWarning = "";
+
+    SetMockTime(0);
+}
+
 BOOST_AUTO_TEST_SUITE_END()