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[tor-commits] [tor/master] Revise log-testing macros to dump the actual log contents on failure



commit 3705ee8fe4771be7b3dce0530cddecf26cff45ce
Author: Nick Mathewson <nickm@xxxxxxxxxxxxxx>
Date:   Thu Sep 8 10:33:01 2016 -0400

    Revise log-testing macros to dump the actual log contents on failure
---
 src/test/log_test_helpers.c | 15 +++++++++++++++
 src/test/log_test_helpers.h | 28 +++++++++++++++++++---------
 2 files changed, 34 insertions(+), 9 deletions(-)

diff --git a/src/test/log_test_helpers.c b/src/test/log_test_helpers.c
index 1ad008a..5eba566 100644
--- a/src/test/log_test_helpers.c
+++ b/src/test/log_test_helpers.c
@@ -210,3 +210,18 @@ mock_saving_logv(int severity, log_domain_mask_t domain,
   smartlist_add(saved_logs, e);
 }
 
+void
+mock_dump_saved_logs(void)
+{
+  if (saved_logs == NULL) {
+    puts("  Captured logs: NULL");
+    return;
+  }
+
+  puts("  Captured logs:");
+  SMARTLIST_FOREACH_BEGIN(saved_logs, const mock_saved_log_entry_t *, m) {
+    printf("% 5d. %s: %s\n", m_sl_idx + 1,
+           log_level_to_string(m->severity),
+           escaped(m->generated_msg));
+  } SMARTLIST_FOREACH_END(m);
+}
diff --git a/src/test/log_test_helpers.h b/src/test/log_test_helpers.h
index f33ee67..5685ddb 100644
--- a/src/test/log_test_helpers.h
+++ b/src/test/log_test_helpers.h
@@ -26,40 +26,50 @@ int mock_saved_log_has_message(const char *msg);
 int mock_saved_log_has_message_containing(const char *msg);
 int mock_saved_log_has_severity(int severity);
 int mock_saved_log_has_entry(void);
+void mock_dump_saved_logs(void);
 
-#define expect_log_msg(str) \
-  tt_assert_msg(mock_saved_log_has_message(str), \
+#define assert_log_predicate(predicate, failure_msg)   \
+  do {                                                 \
+    if (!(predicate)) {                                \
+      tt_fail_msg((failure_msg));                      \
+      mock_dump_saved_logs();                          \
+      TT_EXIT_TEST_FUNCTION;                           \
+    }                                                  \
+  } while (0)
+
+#define expect_log_msg(str)                             \
+  assert_log_predicate(mock_saved_log_has_message(str), \
                 "expected log to contain " # str);
 
 #define expect_log_msg_containing(str) \
-  tt_assert_msg(mock_saved_log_has_message_containing(str), \
+  assert_log_predicate(mock_saved_log_has_message_containing(str), \
                 "expected log to contain " # str);
 
 #define expect_single_log_msg_containing(str) \
   do {                                                        \
-    tt_assert_msg(mock_saved_log_has_message_containing(str), \
+    assert_log_predicate(mock_saved_log_has_message_containing(str), \
                   "expected log to contain " # str);          \
     tt_int_op(smartlist_len(mock_saved_logs()), OP_EQ, 1);    \
   } while (0);
 
 #define expect_no_log_msg(str) \
-  tt_assert_msg(!mock_saved_log_has_message(str), \
+  assert_log_predicate(!mock_saved_log_has_message(str), \
                 "expected log to not contain " # str);
 
 #define expect_log_severity(severity) \
-  tt_assert_msg(mock_saved_log_has_severity(severity), \
+  assert_log_predicate(mock_saved_log_has_severity(severity), \
                 "expected log to contain severity " # severity);
 
 #define expect_no_log_severity(severity) \
-  tt_assert_msg(!mock_saved_log_has_severity(severity), \
+  assert_log_predicate(!mock_saved_log_has_severity(severity), \
                 "expected log to not contain severity " # severity);
 
 #define expect_log_entry() \
-  tt_assert_msg(mock_saved_log_has_entry(), \
+  assert_log_predicate(mock_saved_log_has_entry(), \
                 "expected log to contain entries");
 
 #define expect_no_log_entry() \
-  tt_assert_msg(!mock_saved_log_has_entry(), \
+  assert_log_predicate(!mock_saved_log_has_entry(), \
                 "expected log to not contain entries");
 
 #endif

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