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[TDF] Extend gtest for friends in MT #1310

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Nov 10, 2017
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[TDF] Extend gtest for friends in MT #1310

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69 changes: 68 additions & 1 deletion tree/treeplayer/test/dataframe/dataframe_friends.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -13,9 +13,13 @@ class TDFAndFriends : public ::testing::Test {
constexpr static auto kFile1 = "test_tdfandfriends.root";
constexpr static auto kFile2 = "test_tdfandfriends2.root";
constexpr static auto kFile3 = "test_tdfandfriends3.root";
constexpr static auto kFile4 = "test_tdfandfriends4.root";
constexpr static auto kFile5 = "test_tdfandfriends5.root";
constexpr static ULong64_t kSizeSmall = 4;
constexpr static ULong64_t kSizeBig = 10000;
static void SetUpTestCase()
{
TDataFrame d(4);
TDataFrame d(kSizeSmall);
d.Define("x", [] { return 1; }).Snapshot<int>("t", kFile1, {"x"});
d.Define("y", [] { return 2; }).Snapshot<int>("t2", kFile2, {"y"});

Expand All @@ -30,6 +34,10 @@ class TDFAndFriends : public ::testing::Test {
t.Fill();
}
t.Write();

TDataFrame d2(kSizeBig);
d2.Define("x", [] { return 4; }).Snapshot<int>("t", kFile4, {"x"});
d2.Define("y", [] { return 5; }).Snapshot<int>("t2", kFile5, {"y"});
}

static void TearDownTestCase()
Expand Down Expand Up @@ -119,3 +127,62 @@ TEST_F(TDFAndFriends, QualifiedBranchName)
for (auto v : t)
EXPECT_EQ(v, 2);
}

// NOW MT!-------------
#ifdef R__USE_IMT

TEST_F(TDFAndFriends, FriendMT)
{
auto nSlots = 4U;
ROOT::EnableImplicitMT(nSlots);

TFile f1(kFile4);
TTree *t1 = static_cast<TTree *>(f1.Get("t"));
t1->AddFriend("t2", kFile5);
TDataFrame d(*t1);
auto x = d.Min<int>("x");
auto t = d.Take<int>("y");
EXPECT_EQ(*x, 4);
for (auto v : t)
EXPECT_EQ(v, 5);
}

TEST_F(TDFAndFriends, FriendAliasMT)
{
TFile f1(kFile4);
TTree *t1 = static_cast<TTree *>(f1.Get("t"));
TFile f2(kFile4);
TTree *t2 = static_cast<TTree *>(f2.Get("t"));
t1->AddFriend(t2, "myfriend");
TDataFrame d(*t1);
auto x = d.Min<int>("x");
auto t = d.Take<int>("myfriend.x");
EXPECT_EQ(*x, 4);
for (auto v : t)
EXPECT_EQ(v, 4);
}

TEST_F(TDFAndFriends, FriendChainMT)
{
TChain c1("t");
c1.AddFile(kFile1);
c1.AddFile(kFile4);
c1.AddFile(kFile1);
c1.AddFile(kFile4);
TChain c2("t2");
c2.AddFile(kFile2);
c2.AddFile(kFile5);
c2.AddFile(kFile2);
c2.AddFile(kFile5);
c1.AddFriend(&c2);

TDataFrame d(c1);
auto c = d.Count();
EXPECT_EQ(*c, 2 * (kSizeSmall + kSizeBig));
auto x = d.Min<int>("x");
auto y = d.Max<int>("y");
EXPECT_EQ(*x, 1);
EXPECT_EQ(*y, 5);
}

#endif // R__USE_IMT