72 lines
1.8 KiB
C++
72 lines
1.8 KiB
C++
/* example-test.cpp
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*
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* Some simple examples using c-capnproto
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*
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* Copyright (C) 2017 Alex Helfet
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*
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* This software may be modified and distributed under the terms
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* of the MIT license. See the LICENSE file for details.
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*/
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#include <gtest/gtest.h>
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#include <cstdint>
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#include "capnp_c.h"
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#include "example.capnp.h"
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TEST(Examples, RoundTrip) {
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uint8_t buf[4096];
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ssize_t sz = 0;
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const char *s = "Hello.";
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{
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// Set initial object in `g`.
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const capn_text capn_val0 = {
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.len = strlen(s),
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.str = s,
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.seg = NULL
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};
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struct Greeting g = {
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.text = capn_val0,
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.timesToSay = 17,
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};
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// Serialize `g` to `buf[0..sz-1]`.
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struct capn c;
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capn_init_malloc(&c);
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capn_ptr cr = capn_root(&c);
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struct capn_segment *cs = cr.seg;
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Greeting_ptr gp = new_Greeting(cs);
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write_Greeting(&g, gp);
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int setp_ret = capn_setp(capn_root(&c), 0, gp.p);
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ASSERT_EQ(0, setp_ret);
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sz = capn_write_mem(&c, buf, sizeof(buf), 0 /* packed */);
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capn_free(&c);
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}
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{
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// Write serialized object to file system.
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FILE *f = fopen("tests/example-test.cpp.Greeting.out", "wb");
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ASSERT_NE(f, (void*)0);
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fwrite(buf, 1 /* size */, sz /* count */, f);
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int close_ret = fclose(f);
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ASSERT_EQ(0, close_ret);
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}
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{
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// Deserialize `buf[0..sz-1]` to `rg`.
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struct capn rc;
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int init_mem_ret = capn_init_mem(&rc, buf, sz, 0 /* packed */);
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ASSERT_EQ(0, init_mem_ret);
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Greeting_ptr rroot;
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struct Greeting rg;
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rroot.p = capn_getp(capn_root(&rc), 0 /* off */, 1 /* resolve */);
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read_Greeting(&rg, rroot);
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// Assert deserialized values in `rg`
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EXPECT_EQ(rg.timesToSay, 17);
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EXPECT_EQ(strlen(s), (uint32_t) rg.text.len);
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EXPECT_EQ(0, strncmp(s, rg.text.str, strlen(s)));
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}
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}
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