1 files changed, 95 insertions, 0 deletions
diff --git a/src/trace_processor/sqlite3_str_split_unittest.cc b/src/trace_processor/sqlite3_str_split_unittest.cc
new file mode 100644
index 000000000..4896f2783
--- /dev/null
+++ b/src/trace_processor/sqlite3_str_split_unittest.cc
@@ -0,0 +1,95 @@
+/*
+ * 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 specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "src/trace_processor/sqlite3_str_split.h"
+
+#include <sqlite3.h>
+#include <string>
+#include "perfetto/base/logging.h"
+#include "src/trace_processor/scoped_db.h"
+
+#include "gtest/gtest.h"
+
+namespace perfetto {
+namespace trace_processor {
+namespace {
+
+class Sqlite3StrSplitTest : public ::testing::Test {
+ public:
+  Sqlite3StrSplitTest() {
+    sqlite3* db = nullptr;
+    PERFETTO_CHECK(sqlite3_open(":memory:", &db) == SQLITE_OK);
+    db_.reset(db);
+    sqlite3_str_split_init(db_.get());
+  }
+
+  const char* SplitStmt(const std::string& str,
+                        const std::string& delim,
+                        int field) {
+    const std::string sql = "SELECT STR_SPLIT(\"" + str + "\", \"" + delim +
+                            "\", " + std::to_string(field) + ");";
+    sqlite3_stmt* stmt = nullptr;
+    PERFETTO_CHECK(sqlite3_prepare_v2(*db_, sql.c_str(),
+                                      static_cast<int>(sql.size()), &stmt,
+                                      nullptr) == SQLITE_OK);
+    stmt_.reset(stmt);
+    PERFETTO_CHECK(sqlite3_step(stmt) == SQLITE_ROW);
+    if (sqlite3_column_type(stmt, 0) == SQLITE_NULL) {
+      return nullptr;
+    }
+    return reinterpret_cast<const char*>(sqlite3_column_text(stmt, 0));
+  }
+
+ protected:
+  ScopedDb db_;
+  ScopedStmt stmt_;
+};
+
+TEST_F(Sqlite3StrSplitTest, SplitNoDelimiter) {
+  ASSERT_STREQ(SplitStmt("abc", ":", 0), "abc");
+  ASSERT_EQ(SplitStmt("abc", ":", 1), nullptr);
+}
+
+TEST_F(Sqlite3StrSplitTest, SplitSingleCharDelim) {
+  ASSERT_STREQ(SplitStmt("a:bc", ":", 0), "a");
+  ASSERT_STREQ(SplitStmt("a:bc", ":", 1), "bc");
+  ASSERT_EQ(SplitStmt("a:bc", ":", 2), nullptr);
+}
+
+TEST_F(Sqlite3StrSplitTest, SplitInputConsecutiveDelim) {
+  ASSERT_STREQ(SplitStmt("a::b::c", ":", 0), "a");
+  ASSERT_STREQ(SplitStmt("a::b::c", ":", 1), "");
+  ASSERT_STREQ(SplitStmt("a::b::c", ":", 2), "b");
+  ASSERT_STREQ(SplitStmt("a::b::c", ":", 3), "");
+  ASSERT_STREQ(SplitStmt("a::b::c", ":", 4), "c");
+  ASSERT_EQ(SplitStmt("a::b::c", ":", 5), nullptr);
+}
+
+TEST_F(Sqlite3StrSplitTest, SplitStringDelim) {
+  ASSERT_STREQ(SplitStmt("abczzdefzzghi", "zz", 0), "abc");
+  ASSERT_STREQ(SplitStmt("abczzdefzzghi", "zz", 1), "def");
+  ASSERT_STREQ(SplitStmt("abczzdefzzghi", "zz", 2), "ghi");
+}
+
+TEST_F(Sqlite3StrSplitTest, SplitEmptyInput) {
+  ASSERT_STREQ(SplitStmt("", "zz", 0), "");
+  ASSERT_EQ(SplitStmt("", "zz", 1), nullptr);
+  ASSERT_EQ(SplitStmt("", "zz", 1000), nullptr);
+}
+
+}  // namespace
+}  // namespace trace_processor
+}  // namespace perfetto