TEST_F(BufferTest, pos_seek_fwd_empty) {
struct mem_buffer_pos p;
mem_buffer_begin(&p, &m_buffer);
EXPECT_FALSE(mem_pos_valide(&p));
EXPECT_EQ(0, mem_pos_seek(&p, 1));
EXPECT_TRUE(NULL == p.m_trunk);
EXPECT_EQ((size_t)0, p.m_pos_in_trunk);
EXPECT_FALSE(mem_pos_valide(&p));
}
TEST_F(BufferTest, pos_seek_fwd_multi_trunk) {
struct mem_buffer_trunk * t1 = append_trunk("a");
struct mem_buffer_trunk * t2 = append_trunk("b");
struct mem_buffer_trunk * t3 = append_trunk("c");
struct mem_buffer_pos p;
mem_buffer_begin(&p, &m_buffer);
EXPECT_TRUE(t1 == p.m_trunk);
EXPECT_EQ((size_t)0, p.m_pos_in_trunk);
EXPECT_EQ('a', mem_pos_data(&p));
EXPECT_EQ(1, mem_pos_seek(&p, 1));
EXPECT_TRUE(t2 == p.m_trunk);
EXPECT_EQ((size_t)0, p.m_pos_in_trunk);
EXPECT_EQ('b', mem_pos_data(&p));
EXPECT_EQ(1, mem_pos_seek(&p, 1));
EXPECT_TRUE(t3 == p.m_trunk);
EXPECT_EQ((size_t)0, p.m_pos_in_trunk);
EXPECT_EQ('c', mem_pos_data(&p));
EXPECT_EQ(1, mem_pos_seek(&p, 1));
EXPECT_TRUE(NULL == p.m_trunk);
EXPECT_EQ((size_t)0, p.m_pos_in_trunk);
EXPECT_FALSE(mem_pos_valide(&p));
}
TEST_F(BufferTest, pos_valid_end) {
append_string("a");
struct mem_buffer_pos l;
mem_buffer_end(&l, &m_buffer);
EXPECT_EQ(0, mem_pos_valide(&l));
}
TEST_F(BufferTest, pos_valid_head) {
append_string("a");
struct mem_buffer_pos l;
mem_buffer_begin(&l, &m_buffer);
EXPECT_EQ(1, mem_pos_valide(&l));
}
TEST_F(BufferTest, pos_insert_in_empty) {
struct mem_buffer_pos p;
mem_pos_at(&p, &m_buffer, 3);
EXPECT_EQ(3, mem_pos_insert(&p, "abc", 3));
EXPECT_FALSE(mem_pos_valide(&p));
append_zero();
EXPECT_STREQ("abc", as_string());
}
TEST_F(BufferTest, pos_insert_at_trunk_last) {
append_trunk("def");
struct mem_buffer_pos p;
mem_pos_at(&p, &m_buffer, 3);
EXPECT_EQ(3, mem_pos_insert(&p, "abc", 3));
EXPECT_FALSE(mem_pos_valide(&p));
append_zero();
EXPECT_STREQ("defabc", as_string());
}
TEST_F(BufferTest, pos_seek_back_basic) {
struct mem_buffer_trunk * t1 = append_trunk("abc");
struct mem_buffer_pos p;
mem_buffer_end(&p, &m_buffer);
EXPECT_FALSE(mem_pos_valide(&p));
EXPECT_EQ(-1, mem_pos_seek(&p, -1));
EXPECT_EQ('c', mem_pos_data(&p));
EXPECT_TRUE(t1 == p.m_trunk);
EXPECT_EQ((size_t)2, p.m_pos_in_trunk);
}
TEST_F(BufferTest, pos_at) {
append_string("abc");
struct mem_buffer_pos p;
mem_pos_at(&p, &m_buffer, 0);
EXPECT_EQ('a', mem_pos_data(&p));
mem_pos_at(&p, &m_buffer, 1);
EXPECT_EQ('b', mem_pos_data(&p));
mem_pos_at(&p, &m_buffer, 2);
EXPECT_EQ('c', mem_pos_data(&p));
mem_pos_at(&p, &m_buffer, 3);
EXPECT_FALSE(mem_pos_valide(&p));
}
char mem_pos_data(mem_buffer_pos_t l) {
assert(mem_pos_valide(l));
return ((char *)mem_trunk_data(l->m_trunk))[l->m_pos_in_trunk];
}