Merge pull request #3147 from Balajiganapathi/alternative_scope

Suggest alternatives when identifier not found. Closes #3058.

1 files changed, 88 insertions, 0 deletions

diff --git a/test/libdevcore/StringUtils.cpp b/test/libdevcore/StringUtils.cpp
new file mode 100644
index 00000000..597457cc
--- /dev/null
+++ b/test/libdevcore/StringUtils.cpp
@@ -0,0 +1,88 @@
+/*
+	This file is part of solidity.
+
+	solidity is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	solidity is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * Unit tests for the StringUtils routines.
+ */
+
+#include <libdevcore/StringUtils.h>
+
+#include "../TestHelper.h"
+
+using namespace std;
+
+namespace dev
+{
+namespace test
+{
+
+BOOST_AUTO_TEST_SUITE(StringUtils)
+
+BOOST_AUTO_TEST_CASE(test_similarity)
+{
+	BOOST_CHECK_EQUAL(stringWithinDistance("hello", "hello", 0), true);
+	BOOST_CHECK_EQUAL(stringWithinDistance("hello", "hello", 1), true);
+	BOOST_CHECK_EQUAL(stringWithinDistance("hello", "hellw", 1), true);
+	BOOST_CHECK_EQUAL(stringWithinDistance("hello", "helol", 1), true);
+	BOOST_CHECK_EQUAL(stringWithinDistance("hello", "helo", 1), true);
+	BOOST_CHECK_EQUAL(stringWithinDistance("hello", "helllo", 1), true);
+	BOOST_CHECK_EQUAL(stringWithinDistance("hello", "hlllo", 1), true);
+	BOOST_CHECK_EQUAL(stringWithinDistance("hello", "hllllo", 1), false);
+	BOOST_CHECK_EQUAL(stringWithinDistance("hello", "hllllo", 2), true);
+	BOOST_CHECK_EQUAL(stringWithinDistance("hello", "hlllo", 2), true);
+	BOOST_CHECK_EQUAL(stringWithinDistance("a", "", 2), false);
+	BOOST_CHECK_EQUAL(stringWithinDistance("abc", "ba", 2), false);
+	BOOST_CHECK_EQUAL(stringWithinDistance("abc", "abcdef", 2), false);
+	BOOST_CHECK_EQUAL(stringWithinDistance("abcd", "wxyz", 2), false);
+	BOOST_CHECK_EQUAL(stringWithinDistance("", "", 2), true);
+}
+
+BOOST_AUTO_TEST_CASE(test_dldistance)
+{
+	BOOST_CHECK_EQUAL(stringDistance("hello", "hellw"), 1);
+	BOOST_CHECK_EQUAL(stringDistance("hello", "helol"), 1);
+	BOOST_CHECK_EQUAL(stringDistance("hello", "helo"), 1);
+	BOOST_CHECK_EQUAL(stringDistance("hello", "helllo"), 1);
+	BOOST_CHECK_EQUAL(stringDistance("hello", "hlllo"), 1);
+	BOOST_CHECK_EQUAL(stringDistance("hello", "hllllo"), 2);
+	BOOST_CHECK_EQUAL(stringDistance("a", ""), 1);
+	BOOST_CHECK_EQUAL(stringDistance("abc", "ba"), 2);
+	BOOST_CHECK_EQUAL(stringDistance("abc", "abcdef"), 3);
+	BOOST_CHECK_EQUAL(stringDistance("abcd", "wxyz"), 4);
+	BOOST_CHECK_EQUAL(stringDistance("", ""), 0);
+	BOOST_CHECK_EQUAL(stringDistance("abcdefghijklmnopqrstuvwxyz", "abcabcabcabcabcabcabcabca"), 23);
+
+}
+
+BOOST_AUTO_TEST_CASE(test_alternatives_list)
+{
+	vector<string> strings;
+	BOOST_CHECK_EQUAL(quotedAlternativesList(strings), "");
+	strings.push_back("a");
+	BOOST_CHECK_EQUAL(quotedAlternativesList(strings), "\"a\"");
+	strings.push_back("b");
+	BOOST_CHECK_EQUAL(quotedAlternativesList(strings), "\"a\" or \"b\"");
+	strings.push_back("c");
+	BOOST_CHECK_EQUAL(quotedAlternativesList(strings), "\"a\", \"b\" or \"c\"");
+	strings.push_back("d");
+	BOOST_CHECK_EQUAL(quotedAlternativesList(strings), "\"a\", \"b\", \"c\" or \"d\"");
+}
+
+
+BOOST_AUTO_TEST_SUITE_END()
+
+}
+}