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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: [email protected]
//
package cluster
import (
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestNodeIteration(t *testing.T) {
source := []string{"node1", "node2", "node3", "node4"}
it, err := NewNodeIterator(source, StartRandom)
require.Nil(t, err)
found := map[string]int{}
for i := 0; i < 20; i++ {
host := it.Next()
found[host]++
}
// each host must be contained 5 times
assert.Equal(t, found["node1"], 5)
assert.Equal(t, found["node2"], 5)
assert.Equal(t, found["node3"], 5)
assert.Equal(t, found["node4"], 5)
}
func TestNodeIterationStartAfter(t *testing.T) {
source := []string{"node1", "node2", "node3", "node4"}
it, err := NewNodeIterator(source, StartAfter)
it.SetStartNode("node2")
require.Nil(t, err)
iterations := 3
found := make([]string, iterations)
for i := 0; i < iterations; i++ {
host := it.Next()
found[i] = host
}
expected := []string{"node3", "node4", "node1"}
assert.Equal(t, expected, found)
}
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