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stats_cache_test.go
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stats_cache_test.go
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package cedar
import (
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestStatsCache(t *testing.T) {
t.Run("cache is full", func(t *testing.T) {
cache := newStatsCache("new cache")
for i := 0; i < statChanBufferSize; i++ {
assert.NoError(t, cache.AddStat(Stat{}))
}
assert.Error(t, cache.AddStat(Stat{}))
})
t.Run("logStats clears the cache", func(t *testing.T) {
cache := newStatsCache("new cache")
cache.calls++
cache.logStats()
assert.Equal(t, cache.calls, 0)
})
t.Run("stat is recorded", func(t *testing.T) {
cache := newStatsCache("new cache")
cache.cacheStat(Stat{
Count: 2,
Project: "cedar",
Version: "abcdef",
TaskID: "t1",
})
assert.Equal(t, cache.calls, 1)
assert.Equal(t, cache.total, 2)
assert.Equal(t, cache.byProject["cedar"], 2)
assert.Equal(t, cache.byVersion["abcdef"], 2)
assert.Equal(t, cache.byTaskID["t1"], 2)
})
t.Run("topNItems", func(t *testing.T) {
t.Run("empty map", func(t *testing.T) {
assert.Empty(t, topNItems(map[string]int{}, 10))
})
t.Run("nil map", func(t *testing.T) {
assert.Empty(t, topNItems(nil, 10))
})
t.Run("fewer than n", func(t *testing.T) {
fullMap := map[string]int{
"one": 1,
}
items := topNItems(fullMap, 10)
require.Len(t, items, 1)
assert.Equal(t, items[0].Identifier, "one")
})
t.Run("greater than n", func(t *testing.T) {
fullMap := map[string]int{
"one": 1,
"two": 2,
"three": 3,
}
items := topNItems(fullMap, 2)
require.Len(t, items, 2)
assert.Equal(t, items[0].Identifier, "three")
assert.Equal(t, items[1].Identifier, "two")
})
})
}