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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: [email protected]
//
package nearText
import (
"fmt"
"testing"
"github.com/stretchr/testify/assert"
)
func TestMoveVectorToAnother(t *testing.T) {
t.Run("moving towards one another", func(t *testing.T) {
type testCase struct {
name string
source []float32
target []float32
weight float32
expectedResult []float32
expectedError error
}
tests := []testCase{
{
name: "no force",
source: []float32{0, 1, 2, 3, 4},
target: []float32{0, 0, 0, 0, 0},
weight: 0,
expectedResult: []float32{0, 1, 2, 3, 4},
expectedError: nil,
},
{
name: "wrong vector sizes",
source: []float32{0, 1, 2, 3, 4},
target: []float32{0, 0, 0, 0},
weight: 0,
expectedResult: nil,
expectedError: fmt.Errorf("movement: vector lengths don't match: got 5 and 4"),
},
{
name: "force larger 1",
source: []float32{0, 1, 2, 3, 4},
target: []float32{0, 0, 0, 0, 0},
weight: 1.5,
expectedResult: nil,
expectedError: fmt.Errorf("movement: force must be between 0 and 1: got 1.500000"),
},
{
name: "force smaller 0",
source: []float32{0, 1, 2, 3, 4},
target: []float32{0, 0, 0, 0, 0},
weight: -0.2,
expectedResult: nil,
expectedError: fmt.Errorf("movement: force must be between 0 and 1: got -0.200000"),
},
{
name: "force equals 1",
source: []float32{0, 1, 2, 3, 4},
target: []float32{1, 1, 1, 1, 1},
weight: 1,
expectedResult: []float32{0.5, 1, 1.5, 2, 2.5},
expectedError: nil,
},
{
name: "force equals 0.25",
source: []float32{0, 1, 2, 3, 4},
target: []float32{1, 1, 1, 1, 1},
weight: 0.25,
expectedResult: []float32{0.125, 1, 1.875, 2.75, 3.625},
expectedError: nil,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
v := newMovements()
res, err := v.MoveTo(test.source, test.target, test.weight)
assert.Equal(t, test.expectedError, err)
assert.Equal(t, test.expectedResult, res)
})
}
})
t.Run("moving away from one another", func(t *testing.T) {
type testCase struct {
name string
source []float32
target []float32
weight float32
expectedResult []float32
expectedError error
}
tests := []testCase{
{
name: "no force",
source: []float32{1, 2, 3, 4},
target: []float32{0, 0, 0, 0},
weight: 0,
expectedResult: []float32{1, 2, 3, 4},
expectedError: nil,
},
{
name: "wrong vector sizes",
source: []float32{0, 1, 2, 3, 4},
target: []float32{0, 0, 0, 0},
weight: 0,
expectedResult: nil,
expectedError: fmt.Errorf("movement (moveAwayFrom): vector lengths don't match: got 5 and 4"),
},
{
name: "force smaller 0",
source: []float32{0, 1, 2, 3, 4},
target: []float32{0, 0, 0, 0, 0},
weight: -0.2,
expectedResult: nil,
expectedError: fmt.Errorf("movement (moveAwayFrom): force must be 0 or positive: got -0.200000"),
},
{
name: "reproducing example from investigation period",
source: []float32{1.0, 1.0},
target: []float32{1.2, 0.8},
weight: 1,
expectedResult: []float32{0.9, 1.1},
expectedError: nil,
},
{
name: "force equals 0.25",
source: []float32{0, 1, 2, 3, 4},
target: []float32{1, 1, 1, 1, 1},
weight: 0.25,
expectedResult: []float32{-0.125, 1, 2.125, 3.25, 4.375},
expectedError: nil,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
v := newMovements()
res, err := v.MoveAwayFrom(test.source, test.target, test.weight)
assert.Equal(t, test.expectedError, err)
for i := range test.expectedResult {
assert.InEpsilon(t, test.expectedResult[i], res[i], 0.01)
}
})
}
})
}
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