120 lines
2.9 KiB
Go
120 lines
2.9 KiB
Go
package core
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import (
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"math"
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"testing"
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"time"
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"github.com/benbjohnson/clock"
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"github.com/evcc-io/evcc/util"
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)
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func assert(t *testing.T, s *Savings, total float64, self float64, percentage float64) {
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if !compareWithTolerane(s.ChargedTotal(), total) {
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t.Errorf("ChargedTotal was incorrect, got: %.3f, want: %.3f.", s.ChargedTotal(), total)
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}
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if !compareWithTolerane(s.ChargedSelfConsumption(), self) {
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t.Errorf("ChargedSelfConsumption was incorrect, got: %.3f, want: %.3f.", s.ChargedSelfConsumption(), self)
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}
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if int(s.SelfPercentage()) != int(percentage) {
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t.Errorf("SelfPercentage was incorrect, got: %.1f, want: %.1f.", s.SelfPercentage(), percentage)
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}
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}
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func compareWithTolerane(a, b float64) bool {
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tolerance := 0.001
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diff := math.Abs(a - b)
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return diff < tolerance
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}
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func TestSavingsWithChangingEnergySources(t *testing.T) {
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mockClock := clock.NewMock()
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s := &Savings{
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log: util.NewLogger("savings"),
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started: mockClock.Now(),
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updated: mockClock.Now(),
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Clock: mockClock,
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}
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s.Update(0, 0, 0, 0)
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// half grid, half pv
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mockClock.Add(time.Hour)
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s.Update(2500, 2500, 0, 5000)
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assert(t, s, 5, 2.5, 50)
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// full pv
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mockClock.Add(time.Hour)
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s.Update(0, 5000, 0, 5000)
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assert(t, s, 10, 7.5, 75)
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// full grid
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mockClock.Add(time.Hour)
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s.Update(5000, 0, 0, 5000)
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assert(t, s, 15, 7.5, 50)
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// half grid, half battery
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mockClock.Add(time.Hour)
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s.Update(2500, 0, 2500, 5000)
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assert(t, s, 20, 10, 50)
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// full pv, pv export
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mockClock.Add(time.Hour)
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s.Update(-5000, 10000, 0, 5000)
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assert(t, s, 25, 15, 60)
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// full pv, pv export, battery charge
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mockClock.Add(time.Hour)
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s.Update(-2500, 10000, -2500, 5000)
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assert(t, s, 30, 20, 66)
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// double charge speed, full grid
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mockClock.Add(time.Hour)
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s.Update(10000, 0, 0, 10000)
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assert(t, s, 40, 20, 50)
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}
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func TestSavingsWithDifferentTimespans(t *testing.T) {
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mockClock := clock.NewMock()
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s := &Savings{
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log: util.NewLogger("savings"),
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started: mockClock.Now(),
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updated: mockClock.Now(),
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Clock: mockClock,
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}
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s.Update(0, 0, 0, 0)
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// 10 second 11kW charging, full grid
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mockClock.Add(10 * time.Second)
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s.Update(11000, 0, 0, 11000)
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assert(t, s, 0.030556, 0, 0) // 30,555Wh
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// 10 second 11kW charging, full grid
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mockClock.Add(10 * time.Second)
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s.Update(11000, 0, 0, 11000)
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assert(t, s, 0.061111, 0, 0) // 61,111Wh
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// 5x 2 second 11kW charging, full grid
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mockClock.Add(2 * time.Second)
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s.Update(11000, 0, 0, 11000)
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mockClock.Add(2 * time.Second)
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s.Update(11000, 0, 0, 11000)
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mockClock.Add(2 * time.Second)
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s.Update(11000, 0, 0, 11000)
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mockClock.Add(2 * time.Second)
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s.Update(11000, 0, 0, 11000)
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mockClock.Add(2 * time.Second)
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s.Update(11000, 0, 0, 11000)
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assert(t, s, 0.092, 0, 0) // 91,666Wh
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// 30 min 11kW charging, full grid
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mockClock.Add(30 * time.Minute)
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s.Update(11000, 0, 0, 11000)
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assert(t, s, 5.592, 0, 0) // 5561,111Wh
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// 4 hours 11kW charging, full pv
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mockClock.Add(4 * time.Hour)
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s.Update(0, 11000, 0, 11000)
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assert(t, s, 49.592, 44, 88)
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}
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