Fix tests

collector/meminfo_test.go

@@ -0,0 +1,27 @@
+package collector
+
+import (
+	"os"
+	"testing"
+)
+
+func TestMemInfo(t *testing.T) {
+	file, err := os.Open("fixtures/meminfo")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer file.Close()
+
+	memInfo, err := parseMemInfo(file)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if want, got := 3831959552.0, memInfo["MemTotal"]; want != got {
+		t.Errorf("want memory total %f, got %f", want, got)
+	}
+
+	if want, got := 3787456512.0, memInfo["DirectMap2M"]; want != got {
+		t.Errorf("want memory directMap2M %f, got %f", want, got)
+	}
+}