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package tensor
import (
"testing"
"testing/quick"
"github.com/stretchr/testify/assert"
)
func TestIssue70(t *testing.T) {
a := 2.0
b := NewDense(Float64, Shape{1, 1}, WithBacking([]float64{3}))
var correct interface{} = []float64{6.0}
res, err := Mul(a, b)
if err != nil {
t.Fatalf("Error: %v", err)
}
assert.Equal(t, correct, res.Data())
t.Logf("a %v b %v, res %v", a, b, res)
}
func TestIssue72(t *testing.T) {
a := New(FromScalar(3.14))
b := 0.0
bsa, err := Sub(b, a)
if err != nil {
t.Fatal(err)
}
t.Logf("%v", bsa)
ret, err := Sub(b, bsa, UseUnsafe())
if err != nil {
t.Fatal(err)
}
t.Logf("%v %v", ret, bsa)
invReuseScalar := func(q *Dense) bool {
a := q.Clone().(*Dense)
//if !a.Shape().IsScalarEquiv() {
// return true
//}
b := identityVal(0, q.t)
reuse := New(Of(a.t), WithShape(a.Shape().Clone()...))
correct := a.Clone().(*Dense)
we, willFailEq := willerr(a, numberTypes, unsignedTypes)
_, ok := q.Engine().(Suber)
we = we || !ok
//log.Printf("b-a(r) | b:%v, a %v, r %v", b, a.Shape(), reuse.Shape())
ret, err := Sub(b, a, WithReuse(reuse))
if err, retEarly := qcErrCheck(t, "SubSV", a, b, we, err); retEarly {
if err != nil {
t.Logf("err %v", err)
return false
}
return true
}
//log.Printf("b-a(r) | b:%v, a %v, r %v, ret %v", b, a.Shape(), reuse.Shape(), ret.Shape())
ret, err = Sub(b, ret, UseUnsafe())
if !qcEqCheck(t, a.Dtype(), willFailEq, correct.Data(), ret.Data()) {
t.Errorf("a %v ", a.Shape())
return false
}
if reuse != ret {
t.Errorf("Expected reuse to be the same as retVal")
return false
}
return true
}
if err := quick.Check(invReuseScalar, &quick.Config{Rand: newRand(), MaxCount: quickchecks}); err != nil {
t.Errorf("Inv test for Sub (scalar as left, tensor as right) failed: %v", err)
}
}
func TestIssue83(t *testing.T) {
backing := []float64{-1, 0, 1}
var TT Tensor
TT = New(
WithShape(1, 3),
WithBacking(backing))
TT, _ = T(TT)
it := IteratorFromDense(TT.(*Dense))
for i, ierr := it.Next(); ierr == nil; i, ierr = it.Next() {
if ierr != nil {
t.Error(ierr)
}
if i >= len(backing) {
t.Errorf("Iterator should not return an `i` greater than %v", i)
}
}
backing = []float64{1, 2, 3, 4, 5, 5, 4, 3, 2, 1}
TT = New(WithShape(10, 1, 1, 1), WithBacking(backing))
it = IteratorFromDense(TT.(*Dense))
var vals []float64
for i, ierr := it.Next(); ierr == nil; i, ierr = it.Next() {
if ierr != nil {
t.Error(ierr)
}
v := TT.Data().([]float64)[i]
vals = append(vals, v)
}
t.Logf("%v", vals)
}
func TestIssue88(t *testing.T) {
a := New(WithShape(4, 2), WithBacking([]float64{1, 1, 1, 1, 1, 1, 1, 1}))
b := New(WithShape(2, 4), WithBacking([]float64{0, 1, 0, 1, 0, 1, 0, 1}))
c, _ := a.MatMul(b)
_, err := Div(c, 2)
if err == nil {
t.Fatal("Expected an error")
}
}
var ltoiTestCases = []struct {
name string
shape Shape
strides []int
coordinates []int
correct int
willErr bool
}{
{"\"scalar\" - scalarshape", Shape{}, nil, []int{0}, 0, false},
{"\"scalar\" - scalarshape, non empty strides", Shape{}, []int{1}, []int{0}, 0, false},
{"\"scalar\" - scalarlike", Shape{1, 1, 1}, []int{1, 1, 1}, []int{0, 0, 0}, 0, false},
{"vector", Shape{10}, []int{1}, []int{1}, 1, false},
{"rowvec", Shape{1, 10}, []int{10, 1}, []int{0, 1}, 1, false},
{"colvec", Shape{10, 1}, []int{1, 1}, []int{1, 0}, 1, false},
{"rowvec- funny strides", Shape{1, 10}, []int{1}, []int{0, 1}, 1, false},
{"colvec - funny strides", Shape{10, 1}, []int{1}, []int{1, 0}, 1, false},
}
func TestIssue90(t *testing.T) {
for i, c := range ltoiTestCases {
at, err := Ltoi(c.shape, c.strides, c.coordinates...)
if !checkErr(t, c.willErr, err, c.name, i) {
continue
}
if at != c.correct {
t.Errorf("Expected Ltoi(%v, %v, %v) to be %v. Got %v instead", c.shape, c.strides, c.coordinates, c.correct, at)
}
}
}
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