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    Subject[PATCH 3/3] perf tests: Add is_printable_array test
    Date
    Add automated test for is_printable_array function.

    Link: http://lkml.kernel.org/n/tip-if70lj3zhdc3csdqm5webjvc@git.kernel.org
    Signed-off-by: Jiri Olsa <jolsa@kernel.org>
    ---
    tools/perf/tests/Build | 1 +
    tools/perf/tests/builtin-test.c | 4 ++++
    tools/perf/tests/is_printable_array.c | 36 +++++++++++++++++++++++++++++++++++
    tools/perf/tests/tests.h | 1 +
    4 files changed, 42 insertions(+)
    create mode 100644 tools/perf/tests/is_printable_array.c

    diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build
    index 4158422cc2a6..cb20ae1c0d35 100644
    --- a/tools/perf/tests/Build
    +++ b/tools/perf/tests/Build
    @@ -40,6 +40,7 @@ perf-y += event_update.o
    perf-y += event-times.o
    perf-y += backward-ring-buffer.o
    perf-y += sdt.o
    +perf-y += is_printable_array.o

    $(OUTPUT)tests/llvm-src-base.c: tests/bpf-script-example.c tests/Build
    $(call rule_mkdir)
    diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
    index 4dd2d050788a..10eb30686c9c 100644
    --- a/tools/perf/tests/builtin-test.c
    +++ b/tools/perf/tests/builtin-test.c
    @@ -222,6 +222,10 @@ static struct test generic_tests[] = {
    .func = test__sdt_event,
    },
    {
    + .desc = "Test is_printable_array function",
    + .func = test__is_printable_array,
    + },
    + {
    .func = NULL,
    },
    };
    diff --git a/tools/perf/tests/is_printable_array.c b/tools/perf/tests/is_printable_array.c
    new file mode 100644
    index 000000000000..42e13393e502
    --- /dev/null
    +++ b/tools/perf/tests/is_printable_array.c
    @@ -0,0 +1,36 @@
    +#include <linux/compiler.h>
    +#include "tests.h"
    +#include "debug.h"
    +#include "util.h"
    +
    +int test__is_printable_array(int subtest __maybe_unused)
    +{
    + char buf1[] = { 'k', 'r', 4, 'v', 'a', 0 };
    + char buf2[] = { 'k', 'r', 'a', 'v', 4, 0 };
    + struct {
    + char *buf;
    + unsigned int len;
    + int ret;
    + } t[] = {
    + { (char *) "krava", sizeof("krava"), 1 },
    + { (char *) "krava", sizeof("krava") - 1, 0 },
    + { (char *) "", sizeof(""), 1 },
    + { (char *) "", 0, 0 },
    + { NULL, 0, 0 },
    + { buf1, sizeof(buf1), 0 },
    + { buf2, sizeof(buf2), 0 },
    + };
    + unsigned int i;
    +
    + for (i = 0; i < ARRAY_SIZE(t); i++) {
    + int ret;
    +
    + ret = is_printable_array((char *) t[i].buf, t[i].len);
    + if (ret != t[i].ret) {
    + pr_err("failed: test %u\n", i);
    + return TEST_FAIL;
    + }
    + }
    +
    + return TEST_OK;
    +}
    diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
    index a0288f8092b2..9bfc0e06c61a 100644
    --- a/tools/perf/tests/tests.h
    +++ b/tools/perf/tests/tests.h
    @@ -89,6 +89,7 @@ int test__event_times(int subtest);
    int test__backward_ring_buffer(int subtest);
    int test__cpu_map_print(int subtest);
    int test__sdt_event(int subtest);
    +int test__is_printable_array(int subtest);

    #if defined(__arm__) || defined(__aarch64__)
    #ifdef HAVE_DWARF_UNWIND_SUPPORT
    --
    2.4.11
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