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recommend_test.go
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recommend_test.go
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package birdland
import "testing"
type MostVisitedCase struct {
Name string
Input []int
Expected []int
}
var mostVisited_table = []MostVisitedCase{
{
Name: "Empty input",
Input: []int{},
Expected: []int{},
},
{
Name: "Typical input",
Input: []int{1, 2, 2, 2, 3, 3, 0, 0, 0, 0, 0, 5, 5, 5, 5, 5, 5},
Expected: []int{5, 0, 2, 3, 1},
},
}
type ConsensusCase struct {
Name string
Items []int
Referrers []int
Expected []int
}
var consensus_table = []ConsensusCase{
{
Name: "Empty input",
Items: []int{},
Referrers: []int{},
Expected: []int{},
},
{
Name: "Typical input",
Items: []int{1, 2, 2, 2, 1, 1, 1, 3, 3},
Referrers: []int{1, 3, 4, 5, 1, 1, 1, 2, 1},
Expected: []int{2, 3, 1},
},
}
type TrustCase struct {
Name string
Items []int
Referrers []int
Expected []int
}
var trust_table = []TrustCase{
{
Name: "Typical input",
Items: []int{1, 1, 1, 2, 5, 5, 5, 4},
Referrers: []int{1, 1, 1, 1, 2, 3, 4, 5},
Expected: []int{1, 2, 5, 4},
},
}
func TestRecommendMostVisited(t *testing.T) {
for _, ex := range mostVisited_table {
recommended := RecommendMostVisited(ex.Input)
if len(recommended) != len(ex.Expected) {
t.Errorf("RecommendMostVisited: %s: discrepancy in the length of the recommendations: expected %d, got %d", ex.Name, len(ex.Expected), len(recommended))
}
for i, r := range recommended {
if r != ex.Expected[i] {
t.Errorf("RecommendMostVisited: %s: expected %d, got %d", ex.Name, ex.Expected, recommended)
break
}
}
}
}
func TestRecommendConsensus(t *testing.T) {
for _, ex := range consensus_table {
recommended := RecommendConsensus(ex.Items, ex.Referrers)
if len(recommended) != len(ex.Expected) {
t.Errorf("RecommendConsensus: %s: discrepancy in the length of the recommendations: expected %d, got %d", ex.Name, len(ex.Expected), len(recommended))
}
for i, r := range recommended {
if r != ex.Expected[i] {
t.Errorf("RecommendConsensus: %s: expected %d, got %d", ex.Name, ex.Expected, recommended)
break
}
}
}
}
func TestRecommendTrust(t *testing.T) {
for _, ex := range trust_table {
recommended := RecommendTrust(ex.Items, ex.Referrers)
if len(recommended) != len(ex.Expected) {
t.Errorf("RecommendTrust: %s: discrepancy in the length of the recommendations: expected %d, got %d", ex.Name, len(ex.Expected), len(recommended))
}
for i, r := range recommended {
if r != ex.Expected[i] {
t.Errorf("RecommendTrust: %s: expected %d, got %d", ex.Name, ex.Expected, recommended)
break
}
}
}
}