class_docstr: Test SlotF1Metric.
class_docstr_tok: ["Test","SlotF1Metric","."]
code: def test_slot_f1_metric_inputs(self):
      slots_p_r_and_f1 = [
          (None, None, float("nan")),
          (None, AverageMetric(0.0), float("nan")),
          (AverageMetric(0.0), AverageMetric(0.0), float("nan")),
          (AverageMetric(1), AverageMetric(1), 1.0),
          (AverageMetric(1), AverageMetric(0), 0.0),
          (AverageMetric(0.25), AverageMetric(0.75), 0.375),
      ]
      for slot_p, slot_r, slot_f1 in slots_p_r_and_f1:
          actual_slot_f1 = SlotF1Metric(
              slot_p=slot_p, slot_r=slot_r
          ).value()
          if isnan(slot_f1):
              self.assertTrue(isnan(actual_slot_f1))
          else:
              self.assertEqual(slot_f1, actual_slot_f1)
  
file_path: ParlAI/tests/tod/test_tod_teacher_metrics.py
imports: import unittest
  from math import isnan
  from parlai.core.metrics import AverageMetric
  from parlai.core.tod.teacher_metrics import SlotF1Metric, SlotMetrics
label_desc: Use image node_id 1 for calling the TestSlotF1Metric obj's underlying member method code with example usage: obj.test_slot_f1_metric_inputs() without return types