Document os support of each collector

collector/mdadm_linux_test.go

@@ -0,0 +1,47 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package collector
+
+import (
+	"testing"
+)
+
+func TestMdadm(t *testing.T) {
+	mdStates, err := parseMdstat("fixtures/proc/mdstat")
+
+	if err != nil {
+		t.Fatalf("parsing of reference-file failed entirely: %s", err)
+	}
+
+	refs := map[string]mdStatus{
+		"md3":   {"md3", true, 8, 8, 5853468288, 5853468288},
+		"md127": {"md127", true, 2, 2, 312319552, 312319552},
+		"md0":   {"md0", true, 2, 2, 248896, 248896},
+		"md4":   {"md4", false, 2, 2, 4883648, 4883648},
+		"md6":   {"md6", true, 1, 2, 195310144, 16775552},
+		"md8":   {"md8", true, 2, 2, 195310144, 16775552},
+		"md7":   {"md7", true, 3, 4, 7813735424, 7813735424},
+		"md9":   {"md9", true, 4, 4, 523968, 523968},
+	}
+
+	for _, md := range mdStates {
+		if md != refs[md.mdName] {
+			t.Errorf("failed parsing md-device %s correctly: want %v, got %v", md.mdName, refs[md.mdName], md)
+		}
+	}
+
+	if len(mdStates) != len(refs) {
+		t.Errorf("expected number of parsed md-device to be %d, but was %d", len(refs), len(mdStates))
+	}
+}