Merge from Chromium at DEPS revision r167172

This commit was generated by merge_to_master.py.

Change-Id: Ib8d56fd5ae39a2d7e8c91dcd76cc6d13f25f2aab
diff --git a/sql/statement_unittest.cc b/sql/statement_unittest.cc
new file mode 100644
index 0000000..a7a23d8
--- /dev/null
+++ b/sql/statement_unittest.cc
@@ -0,0 +1,152 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <string>
+
+#include "base/file_util.h"
+#include "base/scoped_temp_dir.h"
+#include "sql/connection.h"
+#include "sql/statement.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/sqlite/sqlite3.h"
+
+namespace {
+
+class StatementErrorHandler : public sql::ErrorDelegate {
+ public:
+  StatementErrorHandler(int* error, std::string* sql_text)
+    : error_(error),
+      sql_text_(sql_text) {}
+
+  virtual ~StatementErrorHandler() {}
+
+  virtual int OnError(int error, sql::Connection* connection,
+                      sql::Statement* stmt) OVERRIDE {
+    *error_ = error;
+    const char* sql_txt = stmt ? stmt->GetSQLStatement() : NULL;
+    *sql_text_ = sql_txt ? sql_txt : "no statement available";
+    return error;
+  }
+
+ private:
+  int* error_;
+  std::string* sql_text_;
+
+ DISALLOW_COPY_AND_ASSIGN(StatementErrorHandler);
+};
+
+class SQLStatementTest : public testing::Test {
+ public:
+  SQLStatementTest() : error_(SQLITE_OK) {}
+
+  void SetUp() {
+    ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
+    ASSERT_TRUE(db_.Open(temp_dir_.path().AppendASCII("SQLStatementTest.db")));
+    // The error delegate will set |error_| and |sql_text_| when any sqlite
+    // statement operation returns an error code.
+    db_.set_error_delegate(new StatementErrorHandler(&error_, &sql_text_));
+  }
+
+  void TearDown() {
+    // If any error happened the original sql statement can be found in
+    // |sql_text_|.
+    EXPECT_EQ(SQLITE_OK, error_);
+    db_.Close();
+  }
+
+  sql::Connection& db() { return db_; }
+
+  int sqlite_error() const { return error_; }
+
+  void ResetError() {
+    error_ = SQLITE_OK;
+    sql_text_.clear();
+  }
+
+ private:
+  ScopedTempDir temp_dir_;
+  sql::Connection db_;
+
+  // The error code of the most recent error.
+  int error_;
+  // Original statement which caused the error.
+  std::string sql_text_;
+};
+
+}  // namespace
+
+TEST_F(SQLStatementTest, Assign) {
+  sql::Statement s;
+  EXPECT_FALSE(s.is_valid());
+
+  s.Assign(db().GetUniqueStatement("CREATE TABLE foo (a, b)"));
+  EXPECT_TRUE(s.is_valid());
+}
+
+TEST_F(SQLStatementTest, Run) {
+  ASSERT_TRUE(db().Execute("CREATE TABLE foo (a, b)"));
+  ASSERT_TRUE(db().Execute("INSERT INTO foo (a, b) VALUES (3, 12)"));
+
+  sql::Statement s(db().GetUniqueStatement("SELECT b FROM foo WHERE a=?"));
+  EXPECT_FALSE(s.Succeeded());
+
+  // Stepping it won't work since we haven't bound the value.
+  EXPECT_FALSE(s.Step());
+
+  // Run should fail since this produces output, and we should use Step(). This
+  // gets a bit wonky since sqlite says this is OK so succeeded is set.
+  s.Reset(true);
+  s.BindInt(0, 3);
+  EXPECT_FALSE(s.Run());
+  EXPECT_EQ(SQLITE_ROW, db().GetErrorCode());
+  EXPECT_TRUE(s.Succeeded());
+
+  // Resetting it should put it back to the previous state (not runnable).
+  s.Reset(true);
+  EXPECT_FALSE(s.Succeeded());
+
+  // Binding and stepping should produce one row.
+  s.BindInt(0, 3);
+  EXPECT_TRUE(s.Step());
+  EXPECT_TRUE(s.Succeeded());
+  EXPECT_EQ(12, s.ColumnInt(0));
+  EXPECT_FALSE(s.Step());
+  EXPECT_TRUE(s.Succeeded());
+}
+
+TEST_F(SQLStatementTest, BasicErrorCallback) {
+  ASSERT_TRUE(db().Execute("CREATE TABLE foo (a INTEGER PRIMARY KEY, b)"));
+  EXPECT_EQ(SQLITE_OK, sqlite_error());
+  // Insert in the foo table the primary key. It is an error to insert
+  // something other than an number. This error causes the error callback
+  // handler to be called with SQLITE_MISMATCH as error code.
+  sql::Statement s(db().GetUniqueStatement("INSERT INTO foo (a) VALUES (?)"));
+  EXPECT_TRUE(s.is_valid());
+  s.BindCString(0, "bad bad");
+  EXPECT_FALSE(s.Run());
+  EXPECT_EQ(SQLITE_MISMATCH, sqlite_error());
+  ResetError();
+}
+
+TEST_F(SQLStatementTest, Reset) {
+  ASSERT_TRUE(db().Execute("CREATE TABLE foo (a, b)"));
+  ASSERT_TRUE(db().Execute("INSERT INTO foo (a, b) VALUES (3, 12)"));
+  ASSERT_TRUE(db().Execute("INSERT INTO foo (a, b) VALUES (4, 13)"));
+
+  sql::Statement s(db().GetUniqueStatement(
+      "SELECT b FROM foo WHERE a = ? "));
+  s.BindInt(0, 3);
+  ASSERT_TRUE(s.Step());
+  EXPECT_EQ(12, s.ColumnInt(0));
+  ASSERT_FALSE(s.Step());
+
+  s.Reset(false);
+  // Verify that we can get all rows again.
+  ASSERT_TRUE(s.Step());
+  EXPECT_EQ(12, s.ColumnInt(0));
+  EXPECT_FALSE(s.Step());
+
+  s.Reset(true);
+  ASSERT_FALSE(s.Step());
+}