func TestRawQueryDerivative_Process_Empty(t *testing.T) {
p := tsdb.RawQueryDerivativeProcessor{
IsNonNegative: false,
DerivativeInterval: 24 * time.Hour,
}
results := p.Process([]*tsdb.MapperValue{})
if !reflect.DeepEqual(results, []*tsdb.MapperValue{}) {
t.Fatalf("unexpected results: %s", spew.Sdump(results))
}
}
func TestRawQueryDerivative_Process_Negative_NonNegative(t *testing.T) {
p := tsdb.RawQueryDerivativeProcessor{
IsNonNegative: true,
DerivativeInterval: 24 * time.Hour,
}
results := p.Process([]*tsdb.MapperValue{
{Time: time.Unix(0, 0).Unix(), Value: 1.0},
{Time: time.Unix(0, 0).Add(24 * time.Hour).UnixNano(), Value: 2.0},
{Time: time.Unix(0, 0).Add(48 * time.Hour).UnixNano(), Value: 0.0},
{Time: time.Unix(0, 0).Add(72 * time.Hour).UnixNano(), Value: 4.0},
})
if !reflect.DeepEqual(results, []*tsdb.MapperValue{
{Time: time.Unix(0, 0).Add(24 * time.Hour).UnixNano(), Value: 1.0},
{Time: time.Unix(0, 0).Add(72 * time.Hour).UnixNano(), Value: 4.0},
}) {
t.Fatalf("unexpected results: %s", spew.Sdump(results))
}
}
// TestProcessRawQueryDerivative tests the RawQueryDerivativeProcessor transformation function on the engine.
// The is called for a queries that do not have a group by.
func TestProcessRawQueryDerivative(t *testing.T) {
tests := []struct {
name string
fn string
interval time.Duration
in []*tsdb.MapperValue
exp []*tsdb.MapperValue
}{
{
name: "empty input",
fn: "derivative",
interval: 24 * time.Hour,
in: []*tsdb.MapperValue{},
exp: []*tsdb.MapperValue{},
},
{
name: "single row returns 0.0",
fn: "derivative",
interval: 24 * time.Hour,
in: []*tsdb.MapperValue{
{
Time: time.Unix(0, 0).Unix(),
Value: 1.0,
},
},
exp: []*tsdb.MapperValue{
{
Time: time.Unix(0, 0).Unix(),
Value: 0.0,
},
},
},
{
name: "basic derivative",
fn: "derivative",
interval: 24 * time.Hour,
in: []*tsdb.MapperValue{
{
Time: time.Unix(0, 0).Unix(),
Value: 0.0,
},
{
Time: time.Unix(0, 0).Add(24 * time.Hour).UnixNano(),
Value: 3.0,
},
{
Time: time.Unix(0, 0).Add(48 * time.Hour).UnixNano(),
Value: 5.0,
},
{
Time: time.Unix(0, 0).Add(72 * time.Hour).UnixNano(),
Value: 9.0,
},
},
exp: []*tsdb.MapperValue{
{
Time: time.Unix(0, 0).Add(24 * time.Hour).UnixNano(),
Value: 3.0,
},
{
Time: time.Unix(0, 0).Add(48 * time.Hour).UnixNano(),
Value: 2.0,
},
{
Time: time.Unix(0, 0).Add(72 * time.Hour).UnixNano(),
Value: 4.0,
},
},
},
{
name: "integer derivative",
fn: "derivative",
interval: 24 * time.Hour,
in: []*tsdb.MapperValue{
{
Time: time.Unix(0, 0).Unix(),
Value: int64(0),
},
{
Time: time.Unix(0, 0).Add(24 * time.Hour).UnixNano(),
Value: int64(3),
},
{
Time: time.Unix(0, 0).Add(48 * time.Hour).UnixNano(),
Value: int64(5),
},
{
Time: time.Unix(0, 0).Add(72 * time.Hour).UnixNano(),
Value: int64(9),
},
},
exp: []*tsdb.MapperValue{
{
Time: time.Unix(0, 0).Add(24 * time.Hour).UnixNano(),
Value: 3.0,
},
{
Time: time.Unix(0, 0).Add(48 * time.Hour).UnixNano(),
Value: 2.0,
},
{
Time: time.Unix(0, 0).Add(72 * time.Hour).UnixNano(),
Value: 4.0,
},
},
},
{
name: "12h interval",
fn: "derivative",
interval: 12 * time.Hour,
in: []*tsdb.MapperValue{
{
Time: time.Unix(0, 0).UnixNano(),
Value: 1.0,
},
{
Time: time.Unix(0, 0).Add(24 * time.Hour).UnixNano(),
Value: 2.0,
},
{
Time: time.Unix(0, 0).Add(48 * time.Hour).UnixNano(),
Value: 3.0,
},
{
Time: time.Unix(0, 0).Add(72 * time.Hour).UnixNano(),
Value: 4.0,
},
},
exp: []*tsdb.MapperValue{
{
Time: time.Unix(0, 0).Add(24 * time.Hour).UnixNano(),
Value: 0.5,
},
{
Time: time.Unix(0, 0).Add(48 * time.Hour).UnixNano(),
Value: 0.5,
},
{
Time: time.Unix(0, 0).Add(72 * time.Hour).UnixNano(),
Value: 0.5,
},
},
},
{
name: "negative derivatives",
fn: "derivative",
interval: 24 * time.Hour,
in: []*tsdb.MapperValue{
{
Time: time.Unix(0, 0).Unix(),
Value: 1.0,
},
{
Time: time.Unix(0, 0).Add(24 * time.Hour).UnixNano(),
Value: 2.0,
},
// should go negative
{
Time: time.Unix(0, 0).Add(48 * time.Hour).UnixNano(),
Value: 0.0,
},
{
Time: time.Unix(0, 0).Add(72 * time.Hour).UnixNano(),
Value: 4.0,
},
},
exp: []*tsdb.MapperValue{
{
Time: time.Unix(0, 0).Add(24 * time.Hour).UnixNano(),
Value: 1.0,
},
{
Time: time.Unix(0, 0).Add(48 * time.Hour).UnixNano(),
Value: -2.0,
},
{
Time: time.Unix(0, 0).Add(72 * time.Hour).UnixNano(),
Value: 4.0,
},
},
},
{
name: "negative derivatives",
fn: "non_negative_derivative",
interval: 24 * time.Hour,
in: []*tsdb.MapperValue{
{
Time: time.Unix(0, 0).Unix(),
Value: 1.0,
},
{
Time: time.Unix(0, 0).Add(24 * time.Hour).UnixNano(),
Value: 2.0,
},
// should go negative
{
Time: time.Unix(0, 0).Add(48 * time.Hour).UnixNano(),
Value: 0.0,
},
{
Time: time.Unix(0, 0).Add(72 * time.Hour).UnixNano(),
Value: 4.0,
},
},
exp: []*tsdb.MapperValue{
{
Time: time.Unix(0, 0).Add(24 * time.Hour).UnixNano(),
Value: 1.0,
},
{
Time: time.Unix(0, 0).Add(72 * time.Hour).UnixNano(),
Value: 4.0,
},
},
},
{
name: "string derivatives",
fn: "derivative",
interval: 24 * time.Hour,
in: []*tsdb.MapperValue{
{
Time: time.Unix(0, 0).Unix(),
Value: "1.0",
},
{
Time: time.Unix(0, 0).Add(24 * time.Hour).UnixNano(),
Value: "2.0",
},
{
Time: time.Unix(0, 0).Add(48 * time.Hour).UnixNano(),
Value: "3.0",
},
{
Time: time.Unix(0, 0).Add(72 * time.Hour).UnixNano(),
Value: "4.0",
},
},
exp: []*tsdb.MapperValue{
{
Time: time.Unix(0, 0).Unix(),
Value: 0.0,
},
},
},
}
for _, test := range tests {
p := tsdb.RawQueryDerivativeProcessor{
IsNonNegative: test.fn == "non_negative_derivative",
DerivativeInterval: test.interval,
}
got := p.Process(test.in)
if len(got) != len(test.exp) {
t.Fatalf("RawQueryDerivativeProcessor(%s) - %s\nlen mismatch: got %d, exp %d", test.fn, test.name, len(got), len(test.exp))
}
for i := 0; i < len(test.exp); i++ {
if test.exp[i].Time != got[i].Time || math.Abs((test.exp[i].Value.(float64)-got[i].Value.(float64))) > 0.0000001 {
t.Fatalf("RawQueryDerivativeProcessor - %s results mismatch:\ngot %v\nexp %v", test.name, got, test.exp)
}
}
}
}