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add tests for modifying uncommitted insert change units

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This commit is contained in:
Josh Holtrop 2017-01-15 20:46:09 -05:00
parent 4e03fbc3de
commit edf29f0bac
1 changed files with 47 additions and 0 deletions
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47
test/src/test_Buffer.cc
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@ -280,3 +280,50 @@ TEST(BufferTest, erase_chunks_are_coalesced_within_a_change_operation)
EXPECT_EQ(C('e'), **it);
EXPECT_EQ(ss("abcdef\n"), b.get_string());
}
TEST(BufferTest, erases_in_uncommitted_insert_units_modify_the_insert_units)
{
std::string s("abcdef\n");
Buffer b((const uint8_t *)&s[0], s.size());
auto it = b.add_cursor();
it->go_right_in_line(false);
b.enter_insert_mode();
b.insert_code_point(*it, C('1'));
b.insert_code_point(*it, C('2'));
b.insert_code_point(*it, C('3'));
it->go_left_in_line();
b.erase_code_point(*it);
b.exit_insert_mode();
EXPECT_EQ(1u, b.m_change_operations.size());
EXPECT_EQ(ss("a12bcdef\n"), b.get_string());
EXPECT_EQ(C('b'), **it);
b.undo();
EXPECT_EQ(ss("abcdef\n"), b.get_string());
EXPECT_EQ(C('b'), **it);
b.redo();
EXPECT_EQ(ss("a12bcdef\n"), b.get_string());
EXPECT_EQ(C('b'), **it);
}
TEST(BufferTest, a_insert_change_unit_is_dropped_if_everything_in_it_is_erased_before_committing)
{
std::string s("abc\n");
Buffer b((const uint8_t *)&s[0], s.size());
auto it = b.add_cursor();
it->go_right_in_line(false);
b.enter_insert_mode();
b.insert_code_point(*it, C('1'));
b.insert_code_point(*it, C('2'));
it->go_left_in_line();
b.erase_code_point(*it); /* backspace */
it->go_left_in_line();
b.erase_code_point(*it); /* backspace */
b.exit_insert_mode();
EXPECT_EQ(ss("abc\n"), b.get_string());
EXPECT_EQ(0u, b.m_change_operations.size());
EXPECT_EQ(C('b'), **it);
}