Refactor collectors

Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>

pkg/collector/iis/iis_bench_test.go

@@ -0,0 +1,12 @@
+package iis_test
+
+import (
+	"testing"
+
+	"github.com/prometheus-community/windows_exporter/pkg/collector/iis"
+	"github.com/prometheus-community/windows_exporter/pkg/testutils"
+)
+
+func BenchmarkCollector(b *testing.B) {
+	testutils.FuncBenchmarkCollector(b, iis.Name, iis.NewWithFlags)
+}

pkg/collector/iis/iis_test.go

@@ -0,0 +1,45 @@
+package iis
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestIISDeduplication(t *testing.T) {
+	start := []perflibAPP_POOL_WAS{
+		{
+			Name:             "foo",
+			Frequency_Object: 1,
+		},
+		{
+			Name:             "foo1#999",
+			Frequency_Object: 2,
+		},
+		{
+			Name:             "foo#2",
+			Frequency_Object: 3,
+		},
+		{
+			Name:             "bar$2",
+			Frequency_Object: 4,
+		},
+		{
+			Name:             "bar_2",
+			Frequency_Object: 5,
+		},
+	}
+	expected := make(map[string]perflibAPP_POOL_WAS)
+	// Should be deduplicated from "foo#2"
+	expected["foo"] = perflibAPP_POOL_WAS{Name: "foo#2", Frequency_Object: 3}
+	// Map key should have suffix stripped, but struct name field should be unchanged
+	expected["foo1"] = perflibAPP_POOL_WAS{Name: "foo1#999", Frequency_Object: 2}
+	// Map key and Name should be identical, as there is no suffix starting with "#"
+	expected["bar$2"] = perflibAPP_POOL_WAS{Name: "bar$2", Frequency_Object: 4}
+	// Map key and Name should be identical, as there is no suffix starting with "#"
+	expected["bar_2"] = perflibAPP_POOL_WAS{Name: "bar_2", Frequency_Object: 5}
+
+	deduplicated := dedupIISNames(start)
+	if !reflect.DeepEqual(expected, deduplicated) {
+		t.Errorf("Flattened values do not match!\nExpected result: %+v\nActual result: %+v", expected, deduplicated)
+	}
+}