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Add capn_init_(fp|mem) to read a stream from file/memory

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Packed form still to be tested
This commit is contained in:
James McKaskill 2013-05-07 22:48:46 -04:00
parent b8da11676a
commit 3f29732c69
4 changed files with 224 additions and 26 deletions
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72
capn-stream-test.cpp Normal file
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#include "capn-stream.c"
#include <gtest/gtest.h>
template <int wordCount>
union AlignedData {
uint8_t bytes[wordCount * 8];
uint64_t words[wordCount];
};
TEST(Stream, ReadEmptyStream_Even) {
AlignedData<2> data = {{
1, 0, 0, 0, // num of segs - 1
0, 0, 0, 0,
0, 0, 0, 0,
2, 3, 4, 0, // garbage that should be ignored
}};
struct capn ctx;
ASSERT_NE(0, capn_init_mem(&ctx, data.bytes, 12, 0));
ASSERT_EQ(0, capn_init_mem(&ctx, data.bytes, 16, 0));
EXPECT_EQ(2, ctx.segnum);
EXPECT_EQ(0, ctx.seglist->len);
EXPECT_EQ(0, ctx.seglist->next->len);
capn_free_mem(&ctx);
}
TEST(Stream, ReadEmptyStream_Odd) {
AlignedData<3> data = {{
2, 0, 0, 0, // num of segs - 1
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
2, 3, 4, 0, // garbage that should be ignored
}};
struct capn ctx;
ASSERT_NE(0, capn_init_mem(&ctx, data.bytes, 12, 0));
ASSERT_EQ(0, capn_init_mem(&ctx, data.bytes, 16, 0));
EXPECT_EQ(3, ctx.segnum);
EXPECT_EQ(0, ctx.seglist->len);
EXPECT_EQ(0, ctx.seglist->next->len);
capn_free_mem(&ctx);
ASSERT_EQ(0, capn_init_mem(&ctx, data.bytes, 20, 0));
EXPECT_EQ(3, ctx.segnum);
EXPECT_EQ(0, ctx.seglist->len);
EXPECT_EQ(0, ctx.seglist->next->len);
capn_free_mem(&ctx);
}
TEST(Stream, ReadStream_Even) {
AlignedData<5> data = {{
1, 0, 0, 0, // num of segs - 1
1, 0, 0, 0,
2, 0, 0, 0,
2, 3, 4, 0, // garbage that should be ignored
1, 2, 3, 4, 5, 6, 7, 8,
9,10,11,12,13,14,15,16,
17,18,19,20,21,22,23,24,
}};
struct capn ctx;
ASSERT_NE(0, capn_init_mem(&ctx, data.bytes, 36, 0));
ASSERT_EQ(0, capn_init_mem(&ctx, data.bytes, 40, 0));
EXPECT_EQ(2, ctx.segnum);
EXPECT_EQ(8, ctx.seglist->len);
EXPECT_EQ(1, ctx.seglist->data[0]);
EXPECT_EQ(16, ctx.seglist->next->len);
EXPECT_EQ(9, ctx.seglist->next->data[0]);
capn_free_mem(&ctx);
}