diff --git a/rados/command_mimic_test.go b/rados/command_mimic_test.go
deleted file mode 100644
index 29a06cd..0000000
--- a/rados/command_mimic_test.go
+++ /dev/null
@@ -1,38 +0,0 @@
-//go:build !luminous
-// +build !luminous
-
-package rados
-
-import (
-	"encoding/json"
-
-	"github.com/stretchr/testify/assert"
-)
-
-// A real test using input buffer is hard to find for mgr.
-// The simplest does not work on luminous, so we simply don't
-// provide the test for luminous.
-
-func (suite *RadosTestSuite) TestMgrCommandWithInputBuffer() {
-	suite.SetupConnection()
-
-	command, err := json.Marshal(
-		map[string]string{"prefix": "crash post", "format": "json"})
-	assert.NoError(suite.T(), err)
-
-	buf, info, err := suite.conn.MgrCommandWithInputBuffer(
-		[][]byte{command}, []byte(`{"crash_id": "foobar", "timestamp": "2020-04-10 15:08:34.659679Z"}`))
-	assert.NoError(suite.T(), err)
-	assert.Equal(suite.T(), info, "")
-	assert.Len(suite.T(), buf, 0)
-
-	command, err = json.Marshal(
-		map[string]string{"prefix": "crash rm", "id": "foobar", "format": "json"})
-	assert.NoError(suite.T(), err)
-
-	buf, info, err = suite.conn.MgrCommandWithInputBuffer(
-		[][]byte{command}, nil)
-	assert.NoError(suite.T(), err)
-	assert.Equal(suite.T(), info, "")
-	assert.Len(suite.T(), buf, 0)
-}
diff --git a/rados/command_test.go b/rados/command_test.go
index 92d3efe..3bb5369 100644
--- a/rados/command_test.go
+++ b/rados/command_test.go
@@ -218,3 +218,28 @@ func (suite *RadosTestSuite) TestMonCommandTargetMalformedCommand() {
 	assert.NotEqual(suite.T(), info, "")
 	assert.Len(suite.T(), buf, 0)
 }
+
+// Does not work on ceph luminous, but we do not support ceph luminous.
+func (suite *RadosTestSuite) TestMgrCommandWithInputBuffer() {
+	suite.SetupConnection()
+
+	command, err := json.Marshal(
+		map[string]string{"prefix": "crash post", "format": "json"})
+	assert.NoError(suite.T(), err)
+
+	buf, info, err := suite.conn.MgrCommandWithInputBuffer(
+		[][]byte{command}, []byte(`{"crash_id": "foobar", "timestamp": "2020-04-10 15:08:34.659679Z"}`))
+	assert.NoError(suite.T(), err)
+	assert.Equal(suite.T(), info, "")
+	assert.Len(suite.T(), buf, 0)
+
+	command, err = json.Marshal(
+		map[string]string{"prefix": "crash rm", "id": "foobar", "format": "json"})
+	assert.NoError(suite.T(), err)
+
+	buf, info, err = suite.conn.MgrCommandWithInputBuffer(
+		[][]byte{command}, nil)
+	assert.NoError(suite.T(), err)
+	assert.Equal(suite.T(), info, "")
+	assert.Len(suite.T(), buf, 0)
+}