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Implement serialization to buffers

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This commit is contained in:
Steve Dee 2014-02-20 17:12:59 -08:00
parent 2c48f47b3d
commit ca03b34318
3 changed files with 168 additions and 0 deletions
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103
capn-stream-test.cpp
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@ -70,3 +70,106 @@ TEST(Stream, ReadStream_Even) {
EXPECT_EQ(9, ctx.seglist->next->data[0]);
capn_free(&ctx);
}
TEST(Stream, WriteEmptyStream) {
uint8_t buf[2048];
struct capn ctx1, ctx2;
capn_init_malloc(&ctx1);
struct capn_ptr root = capn_root(&ctx1);
ASSERT_EQ(CAPN_PTR_LIST, root.type);
EXPECT_EQ(-1, capn_write_mem(&ctx1, buf, 2*8-1, 0));
EXPECT_EQ(2*8, capn_write_mem(&ctx1, buf, 2048, 0));
ASSERT_EQ(0, capn_init_mem(&ctx2, buf, 2048, 0));
EXPECT_EQ(1, ctx2.segnum);
EXPECT_EQ(8, ctx2.seglist->len);
EXPECT_EQ(0, ctx2.seglist->next);
capn_free(&ctx1);
capn_free(&ctx2);
}
TEST(Stream, WriteOneSegment) {
uint8_t buf[2048];
struct capn ctx1, ctx2;
capn_init_malloc(&ctx1);
struct capn_ptr root = capn_root(&ctx1);
struct capn_ptr ptr = capn_new_struct(root.seg, 8, 0);
EXPECT_EQ(0, capn_setp(root, 0, ptr));
EXPECT_EQ(0, capn_write64(ptr, 0, UINT64_C(0x1011121314151617)));
EXPECT_EQ(-1, capn_write_mem(&ctx1, buf, 3*8-1, 0));
EXPECT_EQ(3*8, capn_write_mem(&ctx1, buf, 2048, 0));
ASSERT_EQ(0, capn_init_mem(&ctx2, buf, 2048, 0));
EXPECT_EQ(1, ctx2.segnum);
root = capn_root(&ctx2);
ptr = capn_getp(root, 0, 1);
EXPECT_EQ(UINT64_C(0x1011121314151617), capn_read64(ptr, 0));
capn_free(&ctx1);
capn_free(&ctx2);
}
static struct capn_segment *CreateSmallSegment(void *u, uint32_t id, int sz) {
struct capn_segment *s = (struct capn_segment*) calloc(1, sizeof(*s));
s->data = (char*) calloc(1, sz);
s->cap = sz;
return s;
}
TEST(Stream, WriteTwoSegments) {
struct capn ctx1, ctx2;
uint8_t buf[5*8];
capn_init_malloc(&ctx1);
ctx1.create = &CreateSmallSegment;
struct capn_ptr root = capn_root(&ctx1);
struct capn_ptr ptr1 = capn_new_struct(root.seg, 8, 0);
EXPECT_EQ(0, capn_setp(root, 0, ptr1));
EXPECT_EQ(0, capn_write64(ptr1, 0, UINT64_C(0xfffefdfcfbfaf9f8)));
EXPECT_EQ(2, ctx1.segnum);
/* 2 words: header
* 1 word: segment 1
* 2 words: segment 2
*/
EXPECT_EQ(5*8, capn_write_mem(&ctx1, buf, 5*8, 0));
ASSERT_EQ(0, capn_init_mem(&ctx2, buf, 2048, 0));
root = capn_root(&ctx2);
ptr1 = capn_getp(root, 0, 1);
EXPECT_EQ(UINT64_C(0xfffefdfcfbfaf9f8), capn_read64(ptr1, 0));
capn_free(&ctx1);
capn_free(&ctx2);
}
TEST(Stream, WriteThreeSegments) {
struct capn ctx1, ctx2;
uint8_t buf[2048];
capn_init_malloc(&ctx1);
ctx1.create = &CreateSmallSegment;
struct capn_ptr root = capn_root(&ctx1);
struct capn_ptr ptr1 = capn_new_struct(root.seg, 0, 1);
EXPECT_EQ(0, capn_setp(root, 0, ptr1));
struct capn_ptr ptr2 = capn_new_struct(ptr1.seg, 4, 0);
EXPECT_EQ(0, capn_setp(ptr1, 0, ptr2));
EXPECT_EQ(0, capn_write32(ptr2, 0, 0x12345678));
EXPECT_EQ(3, ctx1.segnum);
EXPECT_EQ(-1, capn_write_mem(&ctx1, buf, 7*8-1, 0));
EXPECT_EQ(7*8, capn_write_mem(&ctx1, buf, 2048, 0));
EXPECT_EQ(0, capn_init_mem(&ctx2, buf, 2048, 0));
root = capn_root(&ctx2);
ptr1 = capn_getp(root, 0, 1);
ptr2 = capn_getp(ptr1, 0, 1);
EXPECT_EQ(0x12345678, capn_read32(ptr2, 0));
capn_free(&ctx1);
capn_free(&ctx2);
}