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Diffstat (limited to 'tests/stateful_util_tests.c')
| -rw-r--r-- | tests/stateful_util_tests.c | 302 |
1 files changed, 302 insertions, 0 deletions
diff --git a/tests/stateful_util_tests.c b/tests/stateful_util_tests.c new file mode 100644 index 00000000..077a2ae9 --- /dev/null +++ b/tests/stateful_util_tests.c @@ -0,0 +1,302 @@ +/* Copyright (c) 2011 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + * + * Tests for statful_util functions. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#define _STUB_IMPLEMENTATION_ /* So we can use memset() ourselves */ + +#include "stateful_util.h" +#include "test_common.h" +#include "utility.h" +#include "vboot_common.h" + + +/* Test StatefulInit */ +static void StatefulInitTest(void) { + MemcpyState s; + char buf[128]; + + memset(&s, 0, sizeof(s)); + s.overrun = 1; + StatefulInit(&s, buf, 128); + TEST_EQ(0, s.overrun, "StatefulInit() overrun"); + TEST_EQ(128, s.remaining_len, "StatefulInit() len"); + TEST_PTR_EQ(buf, s.remaining_buf, "StatefulInit() buf"); +} + + +/* Test StatefulSkip */ +static void StatefulSkipTest(void) { + MemcpyState s; + char buf[128]; + + /* Small skip */ + StatefulInit(&s, buf, 128); + TEST_PTR_EQ(&s, StatefulSkip(&s, 5), "StatefulSkip(5) retval"); + TEST_EQ(128 - 5, s.remaining_len, "StatefulSkip(5) len"); + TEST_PTR_EQ(buf + 5, s.remaining_buf, "StatefulSkip(5) buf"); + TEST_EQ(0, s.overrun, "StatefulSkip(5) overrun"); + + /* Use entire buffer */ + StatefulInit(&s, buf, 128); + TEST_PTR_EQ(&s, StatefulSkip(&s, 128), "StatefulSkip(all) retval"); + TEST_EQ(0, s.remaining_len, "StatefulSkip(all) len"); + TEST_PTR_EQ(buf + 128, s.remaining_buf, "StatefulSkip(all) buf"); + TEST_EQ(0, s.overrun, "StatefulSkip(all) overrun"); + + /* Zero-length skip is ok (but meaningless) */ + TEST_PTR_EQ(&s, StatefulSkip(&s, 0), "StatefulSkip(0) retval"); + TEST_EQ(0, s.remaining_len, "StatefulSkip(0) len"); + TEST_PTR_EQ(buf + 128, s.remaining_buf, "StatefulSkip(0) buf"); + TEST_EQ(0, s.overrun, "StatefulSkip(0) overrun"); + + /* Can't use even one byte past that */ + TEST_PTR_EQ(NULL, StatefulSkip(&s, 1), "StatefulSkip(+1) retval"); + TEST_EQ(0, s.remaining_len, "StatefulSkip(+1) len"); + TEST_EQ(1, s.overrun, "StatefulSkip(+1) overrun"); + + /* Overrun */ + StatefulInit(&s, buf, 128); + TEST_PTR_EQ(NULL, StatefulSkip(&s, 256), "StatefulSkip(256) retval"); + TEST_EQ(1, s.overrun, "StatefulSkip(256) overrun"); + /* Once overrun, always overrun, even if we now ask for a small skip */ + TEST_PTR_EQ(NULL, StatefulSkip(&s, 1), "StatefulSkip(256+1) retval"); + TEST_EQ(1, s.overrun, "StatefulSkip(256+1) overrun"); + + /* Overrun with potential wraparound */ + StatefulInit(&s, buf, 128); + TEST_PTR_EQ(NULL, StatefulSkip(&s, -1), "StatefulSkip(-1) retval"); + TEST_EQ(1, s.overrun, "StatefulSkip(-1) overrun"); +} + + +/* Test StatefulMemset_r */ +static void StatefulMemset_rTest(void) { + MemcpyState s; + char buf[129]; + char want[129]; + + memset(want, 0, sizeof(want)); + memset(buf, 0, sizeof(buf)); + + /* Small sets */ + StatefulInit(&s, buf, 128); + TEST_PTR_EQ(&s, StatefulMemset_r(&s, 'A', 5), "StatefulMemset_r(5) retval"); + TEST_EQ(128 - 5, s.remaining_len, "StatefulMemset_r(5) len"); + TEST_PTR_EQ(buf + 5, s.remaining_buf, "StatefulMemset_r(5) buf"); + /* Using strcmp() is a convenient way to check that we didn't + * overwrite the 0-byte following what we expected to set. */ + TEST_EQ(0, strcmp("AAAAA", buf), "StatefulMemset_r(5) contents"); + TEST_EQ(0, s.overrun, "StatefulMemset_r(5) overrun"); + TEST_PTR_EQ(&s, StatefulMemset_r(&s, 'B', 3), "StatefulMemset_r(3) retval"); + TEST_EQ(0, strcmp("AAAAABBB", buf), "StatefulMemset_r(3) contents"); + + /* Use entire buffer */ + StatefulInit(&s, buf, 128); + TEST_PTR_EQ(&s, StatefulMemset_r(&s, 'C', 128), + "StatefulMemset_r(all) retval"); + TEST_EQ(0, s.remaining_len, "StatefulMemset_r(all) len"); + TEST_PTR_EQ(buf + 128, s.remaining_buf, "StatefulMemset_r(all) buf"); + TEST_EQ(0, s.overrun, "StatefulMemset_r(all) overrun"); + memset(want, 'C', 128); + TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemset_r(all) contents"); + + /* Zero-length set is ok (but meaningless) */ + TEST_PTR_EQ(&s, StatefulMemset_r(&s, 'D', 0), "StatefulMemset_r(0) retval"); + TEST_EQ(0, s.remaining_len, "StatefulMemset_r(0) len"); + TEST_PTR_EQ(buf + 128, s.remaining_buf, "StatefulMemset_r(0) buf"); + TEST_EQ(0, s.overrun, "StatefulMemset_r(0) overrun"); + TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemset_r(0) contents"); + + /* Can't use even one byte past that */ + TEST_PTR_EQ(NULL, StatefulMemset_r(&s, 'E', 1), + "StatefulMemset_r(+1) retval"); + TEST_EQ(0, s.remaining_len, "StatefulMemset_r(+1) len"); + TEST_EQ(1, s.overrun, "StatefulMemset_r(+1) overrun"); + TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemset_r(+1) contents"); + + /* Overrun */ + StatefulInit(&s, buf, 128); + TEST_PTR_EQ(NULL, StatefulMemset_r(&s, 'F', 256), + "StatefulMemset_r(256) retval"); + TEST_EQ(1, s.overrun, "StatefulMemset_r(256) overrun"); + /* Once overrun, always overrun, even if we now ask for a small skip */ + TEST_PTR_EQ(NULL, StatefulMemset_r(&s, 'G', 1), + "StatefulMemset_r(256+1) retval"); + TEST_EQ(1, s.overrun, "StatefulMemset_r(256+1) overrun"); + TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemset_r(+1) contents"); + + /* Overrun with potential wraparound */ + StatefulInit(&s, buf, 128); + TEST_PTR_EQ(NULL, StatefulMemset_r(&s, 'H', -1), + "StatefulMemset_r(-1) retval"); + TEST_EQ(1, s.overrun, "StatefulMemset_r(-1) overrun"); + TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemset_r(+1) contents"); +} + + +/* Test StatefulMemcpy_r */ +static void StatefulMemcpy_rTest(void) { + MemcpyState s; + char buf[129]; + char want[129]; + char* src1 = "Doogie"; + char* src2 = "Howserrr"; + char* src3 = "WholeBuffr"; + + memset(want, 0, sizeof(want)); + memset(buf, 0, sizeof(buf)); + + /* Small copies */ + StatefulInit(&s, buf, 128); + TEST_PTR_EQ(src1, StatefulMemcpy_r(&s, src1, 6), + "StatefulMemcpy_r(6) retval"); + TEST_EQ(128 - 6, s.remaining_len, "StatefulMemcpy_r(6) len"); + TEST_PTR_EQ(buf + 6, s.remaining_buf, "StatefulMemcpy_r(6) buf"); + /* Using strcmp() is a convenient way to check that we didn't + * overwrite the 0-byte following what we expected to copy. */ + TEST_EQ(0, strcmp("Doogie", buf), "StatefulMemcpy_r(6) contents"); + TEST_EQ(0, s.overrun, "StatefulMemcpy_r(6) overrun"); + TEST_PTR_EQ(src2, StatefulMemcpy_r(&s, src2, 8), + "StatefulMemcpy_r(8) retval"); + TEST_EQ(0, strcmp("DoogieHowserrr", buf), "StatefulMemcpy_r(8) contents"); + + /* Use entire buffer */ + memset(buf, 42, sizeof(buf)); + StatefulInit(&s, buf, 10); + TEST_PTR_EQ(src3, StatefulMemcpy_r(&s, src3, 10), + "StatefulMemcpy_r(all) retval"); + TEST_EQ(0, s.remaining_len, "StatefulMemcpy_r(all) len"); + TEST_PTR_EQ(buf + 10, s.remaining_buf, "StatefulMemcpy_r(all) buf"); + TEST_EQ(0, s.overrun, "StatefulMemcpy_r(all) overrun"); + TEST_EQ(0, memcmp(src3, buf, 10), "StatefulMemcpy_r(all) contents"); + TEST_EQ(42, buf[10], "StatefulMemcpy_r(all) contents+1"); + + /* Zero-length copy is ok (but meaningless) */ + TEST_PTR_EQ(src1, StatefulMemcpy_r(&s, src1, 0), + "StatefulMemcpy_r(0) retval"); + TEST_EQ(0, s.remaining_len, "StatefulMemcpy_r(0) len"); + TEST_PTR_EQ(buf + 10, s.remaining_buf, "StatefulMemcpy_r(0) buf"); + TEST_EQ(0, s.overrun, "StatefulMemcpy_r(0) overrun"); + TEST_EQ(42, buf[10], "StatefulMemcpy_r(0) contents+1"); + + /* Can't use even one byte past that */ + TEST_PTR_EQ(NULL, StatefulMemcpy_r(&s, src1, 1), + "StatefulMemcpy_r(+1) retval"); + TEST_EQ(0, s.remaining_len, "StatefulMemcpy_r(+1) len"); + TEST_EQ(1, s.overrun, "StatefulMemcpy_r(+1) overrun"); + TEST_EQ(42, buf[10], "StatefulMemcpy_r(+1) contents"); + + /* Overrun */ + memset(buf, 0, sizeof(buf)); + StatefulInit(&s, buf, 8); + TEST_PTR_EQ(NULL, StatefulMemcpy_r(&s, "MoreThan8", 9), + "StatefulMemcpy_r(9) retval"); + TEST_EQ(1, s.overrun, "StatefulMemcpy_r(9) overrun"); + /* Once overrun, always overrun, even if we now ask for a small skip */ + TEST_PTR_EQ(NULL, StatefulMemcpy_r(&s, "Less", 4), + "StatefulMemcpy_r(9+1) retval"); + TEST_EQ(1, s.overrun, "StatefulMemcpy_r(9+1) overrun"); + TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemcpy_r(+1) contents"); + + /* Overrun with potential wraparound */ + StatefulInit(&s, buf, 128); + TEST_PTR_EQ(NULL, StatefulMemcpy_r(&s, "FOO", -1), + "StatefulMemcpy_r(-1) retval"); + TEST_EQ(1, s.overrun, "StatefulMemcpy_r(-1) overrun"); + TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemcpy_r(+1) contents"); +} + + +/* Test StatefulMemcpy */ +static void StatefulMemcpyTest(void) { + MemcpyState s; + char buf[129]; + char want[129]; + char* src1 = "ThisIsATest"; + char* src2 = "ThisIsOnlyATest"; + + memset(want, 0, sizeof(want)); + memset(buf, 0, sizeof(buf)); + + /* Small copies */ + StatefulInit(&s, src1, 12); + TEST_PTR_EQ(buf, StatefulMemcpy(&s, buf, 6), "StatefulMemcpy(6) retval"); + TEST_EQ(6, s.remaining_len, "StatefulMemcpy(6) len"); + TEST_PTR_EQ(src1 + 6, s.remaining_buf, "StatefulMemcpy(6) buf"); + /* Using strcmp() is a convenient way to check that we didn't + * overwrite the 0-byte following what we expected to copy. */ + TEST_EQ(0, strcmp("ThisIs", buf), "StatefulMemcpy(6) contents"); + TEST_EQ(0, s.overrun, "StatefulMemcpy(6) overrun"); + TEST_PTR_EQ(buf, StatefulMemcpy(&s, buf, 5), "StatefulMemcpy(5) retval"); + /* Note that we shouldn't have copied the last byte out of the + * stateful buffer, so we don't overwrite the last character of the + * string that was in buf. */ + TEST_EQ(0, strcmp("ATests", buf), "StatefulMemcpy(5) contents"); + + /* Use entire buffer */ + memset(buf, 1, sizeof(buf)); + StatefulInit(&s, src2, 16); + TEST_PTR_EQ(buf, StatefulMemcpy(&s, buf, 16), "StatefulMemcpy(all) retval"); + TEST_EQ(0, s.remaining_len, "StatefulMemcpy(all) len"); + TEST_PTR_EQ(src2 + 16, s.remaining_buf, "StatefulMemcpy(all) buf"); + TEST_EQ(0, s.overrun, "StatefulMemcpy(all) overrun"); + TEST_EQ(0, strcmp(src2, buf), "StatefulMemcpy(all) contents"); + + /* Zero-length copy is ok (but meaningless) */ + TEST_PTR_EQ(buf, StatefulMemcpy(&s, buf, 0), + "StatefulMemcpy(0) retval"); + TEST_EQ(0, s.remaining_len, "StatefulMemcpy(0) len"); + TEST_PTR_EQ(src2 + 16, s.remaining_buf, "StatefulMemcpy(0) buf"); + TEST_EQ(0, s.overrun, "StatefulMemcpy(0) overrun"); + TEST_EQ(0, strcmp(src2, buf), "StatefulMemcpy(0) contents"); + + /* Can't use even one byte past that */ + TEST_PTR_EQ(NULL, StatefulMemcpy(&s, buf, 1), + "StatefulMemcpy(+1) retval"); + TEST_EQ(0, s.remaining_len, "StatefulMemcpy(+1) len"); + TEST_EQ(1, s.overrun, "StatefulMemcpy(+1) overrun"); + TEST_EQ(0, strcmp(src2, buf), "StatefulMemcpy(+1) contents"); + + /* Overrun */ + memset(buf, 0, sizeof(buf)); + StatefulInit(&s, "Small", 5); + TEST_PTR_EQ(NULL, StatefulMemcpy(&s, buf, 9), "StatefulMemcpy(9) retval"); + TEST_EQ(1, s.overrun, "StatefulMemcpy(9) overrun"); + /* Once overrun, always overrun, even if we now ask for a small skip */ + TEST_PTR_EQ(NULL, StatefulMemcpy(&s, buf, 4), + "StatefulMemcpy(9+1) retval"); + TEST_EQ(1, s.overrun, "StatefulMemcpy(9+1) overrun"); + TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemcpy(+1) contents"); + + /* Overrun with potential wraparound */ + StatefulInit(&s, "Larger", 6); + TEST_PTR_EQ(NULL, StatefulMemcpy(&s, buf, -1), "StatefulMemcpy(-1) retval"); + TEST_EQ(1, s.overrun, "StatefulMemcpy(-1) overrun"); + TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemcpy(+1) contents"); +} + + +/* disable MSVC warnings on unused arguments */ +__pragma(warning (disable: 4100)) + +int main(int argc, char* argv[]) { + int error_code = 0; + + StatefulInitTest(); + StatefulSkipTest(); + StatefulMemset_rTest(); + StatefulMemcpy_rTest(); + StatefulMemcpyTest(); + + if (!gTestSuccess) + error_code = 255; + + return error_code; +} |