Deprecate CheckReceiverMetrics functions (#12120)

<!--Ex. Fixing a bug - Describe the bug and how this fixes the issue.
Ex. Adding a feature - Explain what this achieves.-->
#### Description
Deprecating CheckReceiverMetrics functions in the untested
`obsreporttest` and `otelchecker` go files.

cc @bogdandrutu 
<!--Describe what testing was performed and which tests were added.-->
#### Testing
n/a

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#### Documentation
n/a

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Author: sincejune

.chloggen/deprecate-checkreceivermetrics.yaml

@@ -0,0 +1,25 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: deprecation
+
+# The name of the component, or a single word describing the area of concern, (e.g. otlpreceiver)
+component: component/componenttest
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Deprecate CheckReceiverMetrics in componenenttest
+
+# One or more tracking issues or pull requests related to the change
+issues: [12185]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext: Use the `metadatatest.AssertEqualMetric` series of functions instead of `obsreporttest.CheckReceiverMetrics`
+
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: [api]

component/componenttest/obsreporttest.go

@@ -35,6 +35,7 @@ func (tts *TestTelemetry) CheckReceiverTraces(protocol string, acceptedSpans, dr
 	return checkReceiver(tts.Telemetry, tts.id, "spans", protocol, acceptedSpans, droppedSpans)
 }
 
+// Deprecated: [v0.120.0] use the metadatatest.AssertEqualMetric series of functions instead.
 // CheckReceiverMetrics checks that for the current exported values for metrics receiver metrics match given values.
 func (tts *TestTelemetry) CheckReceiverMetrics(protocol string, acceptedMetricPoints, droppedMetricPoints int64) error {
 	return checkReceiver(tts.Telemetry, tts.id, "metric_points", protocol, acceptedMetricPoints, droppedMetricPoints)

receiver/receiverhelper/obsreport_test.go

@@ -213,7 +213,24 @@ func TestReceiveMetricsOp(t *testing.T) {
 			}
 		}
 
-		require.NoError(t, tt.CheckReceiverMetrics(transport, int64(acceptedMetricPoints), int64(refusedMetricPoints)))
+		metadatatest.AssertEqualReceiverAcceptedMetricPoints(t, tt.Telemetry,
+			[]metricdata.DataPoint[int64]{
+				{
+					Attributes: attribute.NewSet(
+						attribute.String(internal.ReceiverKey, receiverID.String()),
+						attribute.String(internal.TransportKey, transport)),
+					Value: int64(acceptedMetricPoints),
+				},
+			}, metricdatatest.IgnoreTimestamp(), metricdatatest.IgnoreExemplars())
+		metadatatest.AssertEqualReceiverRefusedMetricPoints(t, tt.Telemetry,
+			[]metricdata.DataPoint[int64]{
+				{
+					Attributes: attribute.NewSet(
+						attribute.String(internal.ReceiverKey, receiverID.String()),
+						attribute.String(internal.TransportKey, transport)),
+					Value: int64(refusedMetricPoints),
+				},
+			}, metricdatatest.IgnoreTimestamp(), metricdatatest.IgnoreExemplars())
 	})
 }
 
@@ -321,10 +338,24 @@ func TestCheckReceiverMetricsViews(t *testing.T) {
 	require.NotNil(t, ctx)
 	rec.EndMetricsOp(ctx, format, 7, nil)
 
-	require.NoError(t, tt.CheckReceiverMetrics(transport, 7, 0))
-	require.Error(t, tt.CheckReceiverMetrics(transport, 7, 7))
-	require.Error(t, tt.CheckReceiverMetrics(transport, 0, 0))
-	assert.Error(t, tt.CheckReceiverMetrics(transport, 0, 7))
+	metadatatest.AssertEqualReceiverAcceptedMetricPoints(t, tt.Telemetry,
+		[]metricdata.DataPoint[int64]{
+			{
+				Attributes: attribute.NewSet(
+					attribute.String(internal.ReceiverKey, receiverID.String()),
+					attribute.String(internal.TransportKey, transport)),
+				Value: int64(7),
+			},
+		}, metricdatatest.IgnoreTimestamp(), metricdatatest.IgnoreExemplars())
+	metadatatest.AssertEqualReceiverRefusedMetricPoints(t, tt.Telemetry,
+		[]metricdata.DataPoint[int64]{
+			{
+				Attributes: attribute.NewSet(
+					attribute.String(internal.ReceiverKey, receiverID.String()),
+					attribute.String(internal.TransportKey, transport)),
+				Value: int64(0),
+			},
+		}, metricdatatest.IgnoreTimestamp(), metricdatatest.IgnoreExemplars())
 }
 
 func TestCheckReceiverLogsViews(t *testing.T) {