custom-fan-curve.robot: Fail only on multiple invalid values in row

Signed-off-by: Filip Gołaś <[email protected]>

dasharo-performance/custom-fan-curve.robot

@@ -75,20 +75,31 @@ Perform Custom Fan Curve Test
     Stress Test    ${CUSTOM_FAN_CURVE_TEST_DURATION}m
     ${timer}=    Convert To Integer    0
     Sleep    5s
-    ${pass}=    Set Variable    ${TRUE}
+    ${result}=    Set Variable    ${TRUE}
+    ${fails_in_a_row}=    Set Variable    0
+
     FOR    ${i}    IN RANGE    (${CUSTOM_FAN_CURVE_TEST_DURATION} / ${CUSTOM_FAN_CURVE_MEASURE_INTERVAL})
         Log To Console    \n ----------------------------------------------------------------
         Log To Console    ${timer} min.
-        ${result}=    Verify Fan Speeds    ${profile}
-        ${pass}=    Evaluate    ${pass} and ${result}
+
+        ${new_result}=    Verify Fan Speeds    ${profile}
+        IF    not ${result} and not ${new_result}
+            ${fails_in_a_row}=    Evaluate    ${fails_in_a_row}+1
+            IF    ${fails_in_a_row} > 1
+                Fail    Too many invalid fan speeds in a row
+            END
+        ELSE
+            ${fails_in_a_row}=    Set Variable    0
+        END
+
         Sleep    ${CUSTOM_FAN_CURVE_MEASURE_INTERVAL}m
         ${timer}=    Evaluate    ${timer} + ${CUSTOM_FAN_CURVE_MEASURE_INTERVAL}
     END
-    IF    not ${pass}
+
+    IF    not ${result}
         Log    Invalid fan speeds detected. Needs manual verification    WARN
         Log To Console    Invalid fan speeds detected. Needs manual verification    WARN
     END
-    Should Be True    ${pass}
 
 Verify Fan Speeds
     [Documentation]    Measures PWM/RPM and compares to target values depending