Extract Metrics out of ReportText

Metrics will be reused with other Reporters

lib/metrics_test.go

@@ -0,0 +1,54 @@
+package vegeta
+
+import (
+	"errors"
+	"testing"
+	"time"
+)
+
+func TestNewMetrics(t *testing.T) {
+	m := NewMetrics([]Result{
+		Result{500, time.Now(), 100 * time.Millisecond, 10, 30, errors.New("Internal server error")},
+		Result{200, time.Now(), 20 * time.Millisecond, 20, 20, nil},
+		Result{200, time.Now(), 30 * time.Millisecond, 30, 10, nil},
+	})
+
+	for field, values := range map[string][]float64{
+		"MeanBytesIn":  []float64{m.MeanBytesIn, 20.0},
+		"MeanBytesOut": []float64{m.MeanBytesOut, 20.0},
+		"MeanSuccess":  []float64{m.MeanSuccess, 0.6666666666666666},
+	} {
+		if values[0] != values[1] {
+			t.Errorf("%s: want: %f, got: %f", field, values[1], values[0])
+		}
+	}
+
+	for field, values := range map[string][]time.Duration{
+		"TotalTiming": []time.Duration{m.TotalTiming, 150 * time.Millisecond},
+		"MeanTiming":  []time.Duration{m.MeanTiming, 50 * time.Millisecond},
+	} {
+		if values[0] != values[1] {
+			t.Errorf("%s: want: %s, got: %s", field, values[1], values[0])
+		}
+	}
+
+	for field, values := range map[string][]uint64{
+		"TotalSuccess":  []uint64{m.TotalSuccess, 2},
+		"TotalBytesOut": []uint64{m.TotalBytesOut, 60},
+		"TotalRequests": []uint64{m.TotalRequests, 3},
+		"TotalBytesIn":  []uint64{m.TotalBytesIn, 60},
+	} {
+		if values[0] != values[1] {
+			t.Errorf("%s: want: %d, got: %d", field, values[1], values[0])
+		}
+	}
+
+	if len(m.StatusCodes) != 2 || m.StatusCodes[200] != 2 || m.StatusCodes[500] != 1 {
+		t.Errorf("StatusCodes: want: %v, got: %v", map[int]int{200: 2, 500: 1}, m.StatusCodes)
+	}
+
+	err := "Internal server error"
+	if len(m.Errors) != 1 || m.Errors[0] != err {
+		t.Errorf("Errors: want: %v, got: %v", []string{err}, m.Errors)
+	}
+}