unit tests for extractor loo sampling

1 files changed, 102 insertions, 0 deletions

diff --git a/extractor/sampler_test_blacklist.cc b/extractor/sampler_test_blacklist.cc
new file mode 100644
index 00000000..3305b990
--- /dev/null
+++ b/extractor/sampler_test_blacklist.cc
@@ -0,0 +1,102 @@
+#include <gtest/gtest.h>
+
+#include <memory>
+
+#include "mocks/mock_suffix_array.h"
+#include "mocks/mock_data_array.h"
+#include "phrase_location.h"
+#include "sampler.h"
+
+using namespace std;
+using namespace ::testing;
+
+namespace extractor {
+namespace {
+
+class SamplerTestBlacklist : public Test {
+ protected:
+  virtual void SetUp() {
+    source_data_array = make_shared<MockDataArray>();
+    for (int i = 0; i < 10; ++i) {
+      EXPECT_CALL(*source_data_array, GetSentenceId(i)).WillRepeatedly(Return(i));
+    }
+    for (int i = -10; i < 0; ++i) {
+      EXPECT_CALL(*source_data_array, GetSentenceId(i)).WillRepeatedly(Return(0));
+    }
+    suffix_array = make_shared<MockSuffixArray>();
+    for (int i = -10; i < 10; ++i) {
+      EXPECT_CALL(*suffix_array, GetSuffix(i)).WillRepeatedly(Return(i));
+    }
+  }
+
+  shared_ptr<MockSuffixArray> suffix_array;
+  shared_ptr<Sampler> sampler;
+  shared_ptr<MockDataArray> source_data_array;
+};
+
+TEST_F(SamplerTestBlacklist, TestSuffixArrayRange) {
+  PhraseLocation location(0, 10);
+  unordered_set<int> blacklist;
+  vector<int> expected_locations;
+   
+  blacklist.insert(0);
+  sampler = make_shared<Sampler>(suffix_array, 1);
+  expected_locations = {1};
+  EXPECT_EQ(PhraseLocation(expected_locations, 1), sampler->Sample(location, blacklist, source_data_array));
+  blacklist.clear();
+  
+  for (int i = 0; i < 9; i++) {
+    blacklist.insert(i);
+  }
+  sampler = make_shared<Sampler>(suffix_array, 1);
+  expected_locations = {9};
+  EXPECT_EQ(PhraseLocation(expected_locations, 1), sampler->Sample(location, blacklist, source_data_array));
+  blacklist.clear();
+
+  blacklist.insert(0);
+  blacklist.insert(5);
+  sampler = make_shared<Sampler>(suffix_array, 2);
+  expected_locations = {1, 4};
+  EXPECT_EQ(PhraseLocation(expected_locations, 1), sampler->Sample(location, blacklist, source_data_array));
+  blacklist.clear();
+
+  blacklist.insert(0);
+  blacklist.insert(1);
+  blacklist.insert(2);
+  blacklist.insert(3);
+  sampler = make_shared<Sampler>(suffix_array, 2);
+  expected_locations = {4, 5};
+  EXPECT_EQ(PhraseLocation(expected_locations, 1), sampler->Sample(location, blacklist, source_data_array));
+  blacklist.clear();
+
+  blacklist.insert(0);
+  blacklist.insert(3);
+  blacklist.insert(7);
+  sampler = make_shared<Sampler>(suffix_array, 3);
+  expected_locations = {1, 2, 6};
+  EXPECT_EQ(PhraseLocation(expected_locations, 1), sampler->Sample(location, blacklist, source_data_array));
+  blacklist.clear();
+
+  blacklist.insert(0);
+  blacklist.insert(3);
+  blacklist.insert(5);
+  blacklist.insert(8);
+  sampler = make_shared<Sampler>(suffix_array, 4);
+  expected_locations = {1, 2, 4, 7};
+  EXPECT_EQ(PhraseLocation(expected_locations, 1), sampler->Sample(location, blacklist, source_data_array));
+  blacklist.clear();
+  
+  blacklist.insert(0);
+  sampler = make_shared<Sampler>(suffix_array, 100);
+  expected_locations = {1, 2, 3, 4, 5, 6, 7, 8, 9};
+  EXPECT_EQ(PhraseLocation(expected_locations, 1), sampler->Sample(location, blacklist, source_data_array));
+  blacklist.clear();
+ 
+  blacklist.insert(9);
+  sampler = make_shared<Sampler>(suffix_array, 100);
+  expected_locations = {0, 1, 2, 3, 4, 5, 6, 7, 8};
+  EXPECT_EQ(PhraseLocation(expected_locations, 1), sampler->Sample(location, blacklist, source_data_array));
+}
+
+} // namespace
+} // namespace extractor