From d6e08c477b8fedeef29ebb72e02f03569c0cd531 Mon Sep 17 00:00:00 2001
From: "m.malygina" <m.malygina@yadro.com>
Date: Wed, 26 Jul 2023 13:35:35 +0300
Subject: [PATCH] fix divizion by zero, when total operations is zero

---
 src/frostfs_testlib/load/load_report.py    | 14 ++++++++------
 src/frostfs_testlib/load/load_verifiers.py |  6 +++---
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/src/frostfs_testlib/load/load_report.py b/src/frostfs_testlib/load/load_report.py
index e1056b7..a2cecf6 100644
--- a/src/frostfs_testlib/load/load_report.py
+++ b/src/frostfs_testlib/load/load_report.py
@@ -100,7 +100,7 @@ class LoadReport:
 
         return model_map[self.load_params.scenario]
 
-    def _get_oprations_sub_section_html(
+    def _get_operations_sub_section_html(
         self,
         operation_type: str,
         total_operations: int,
@@ -132,7 +132,9 @@ class LoadReport:
         model = self._get_model_string()
         # write 8KB 15h49m 50op/sec 50th open model/closed model/min_iteration duration=1s - 1.636MB/s 199.57451/s
         short_summary = f"{operation_type} {object_size}{object_size_unit} {duration} {requested_rate_str} {vus_str} {model} - {throughput:.2f}{unit}/s {total_rate:.2f}/s"
-
+        errors_percent = 0
+        if total_operations:
+            errors_percent = total_errors/total_operations*100.0
         html = f"""
         <table border="1" cellpadding="5px"><tbody>
         <tr><th colspan="2" bgcolor="gainsboro">{short_summary}</th></tr>
@@ -143,7 +145,7 @@ class LoadReport:
 
         <tr><th colspan="2" bgcolor="gainsboro">Errors</th></tr>
         {per_node_errors_html}
-        {self._row("Total", f"{total_errors} ({total_errors/total_operations*100.0:.2f}%)")}
+        {self._row("Total", f"{total_errors} ({errors_percent:.2f}%)")}
         {self._row("Threshold", f"{self.load_params.error_threshold:.2f}%")}
         </tbody></table><br><hr>
         """
@@ -228,7 +230,7 @@ class LoadReport:
                         delete_errors[node_key] = metrics.delete_failed_iterations
 
             if write_section_required:
-                html += self._get_oprations_sub_section_html(
+                html += self._get_operations_sub_section_html(
                     "Write",
                     write_operations,
                     requested_write_rate_str,
@@ -239,7 +241,7 @@ class LoadReport:
                 )
 
             if read_section_required:
-                html += self._get_oprations_sub_section_html(
+                html += self._get_operations_sub_section_html(
                     "Read",
                     read_operations,
                     requested_read_rate_str,
@@ -250,7 +252,7 @@ class LoadReport:
                 )
 
             if delete_section_required:
-                html += self._get_oprations_sub_section_html(
+                html += self._get_operations_sub_section_html(
                     "Delete",
                     delete_operations,
                     requested_delete_rate_str,
diff --git a/src/frostfs_testlib/load/load_verifiers.py b/src/frostfs_testlib/load/load_verifiers.py
index f2a3e7e..80c3962 100644
--- a/src/frostfs_testlib/load/load_verifiers.py
+++ b/src/frostfs_testlib/load/load_verifiers.py
@@ -49,15 +49,15 @@ class LoadVerifier:
         if deleters and not delete_operations:
             exceptions.append(f"No any delete operation was performed")
 
-        if writers and write_errors / write_operations * 100 > self.load_params.error_threshold:
+        if write_operations and writers and write_errors / write_operations * 100 > self.load_params.error_threshold:
             exceptions.append(
                 f"Write error rate is greater than threshold: {write_errors / write_operations * 100} > {self.load_params.error_threshold}"
             )
-        if readers and read_errors / read_operations * 100 > self.load_params.error_threshold:
+        if read_operations and readers and read_errors / read_operations * 100 > self.load_params.error_threshold:
             exceptions.append(
                 f"Read error rate is greater than threshold: {read_errors / read_operations * 100} > {self.load_params.error_threshold}"
             )
-        if deleters and delete_errors / delete_operations * 100 > self.load_params.error_threshold:
+        if delete_operations and deleters and delete_errors / delete_operations * 100 > self.load_params.error_threshold:
             exceptions.append(
                 f"Delete error rate is greater than threshold: {delete_errors / delete_operations * 100} > {self.load_params.error_threshold}"
             )