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golearn/metrics/pairwise/euclidean_test.go
2018-06-16 22:11:59 +08:00

37 lines
740 B
Go

package pairwise
import (
"testing"
. "github.com/smartystreets/goconvey/convey"
"gonum.org/v1/gonum/mat"
)
func TestEuclidean(t *testing.T) {
var vectorX, vectorY *mat.Dense
euclidean := NewEuclidean()
Convey("Given two vectors", t, func() {
vectorX = mat.NewDense(3, 1, []float64{1, 2, 3})
vectorY = mat.NewDense(3, 1, []float64{2, 4, 5})
Convey("When doing inner product", func() {
result := euclidean.InnerProduct(vectorX, vectorY)
Convey("The result should be 25", func() {
So(result, ShouldEqual, 25)
})
})
Convey("When calculating distance", func() {
result := euclidean.Distance(vectorX, vectorY)
Convey("The result should be 3", func() {
So(result, ShouldEqual, 3)
})
})
})
}