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Test we get back out the data we put in.

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This also adds a utility that'll aid future tests.
This commit is contained in:
Brian Brazil 2017-04-20 14:24:35 +01:00
parent 2fcdd1a5cb
commit 2742fc380b
1 changed files with 38 additions and 27 deletions
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65
db_test.go
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@ -19,43 +19,59 @@ import (
"testing"
"github.com/prometheus/tsdb/labels"
"github.com/stretchr/testify/require"
)
// Convert a SeriesSet into a form useable with reflect.DeepEqual.
func readSeriesSet(ss SeriesSet) (map[string][]sample, error) {
result := map[string][]sample{}
for ss.Next() {
series := ss.At()
samples := []sample{}
it := series.Iterator()
for it.Next() {
t, v := it.At()
samples = append(samples, sample{t: t, v: v})
}
name := series.Labels().String()
result[name] = samples
if err := ss.Err(); err != nil {
return nil, err
}
}
return result, nil
}
func TestDataAvailableOnlyAfterCommit(t *testing.T) {
tmpdir, _ := ioutil.TempDir("", "test")
defer os.RemoveAll(tmpdir)
db, err := Open(tmpdir, nil, nil, nil)
if err != nil {
t.Fatalf("Error opening database: %q", err)
}
require.NoError(t, err)
defer db.Close()
app := db.Appender()
_, err = app.Add(labels.FromStrings("foo", "bar"), 0, 0)
if err != nil {
t.Fatalf("Error adding sample: %q", err)
}
require.NoError(t, err)
querier := db.Querier(0, 1)
defer querier.Close()
seriesSet := querier.Select(labels.NewEqualMatcher("foo", "bar"))
if seriesSet.Next() {
t.Fatalf("Error, was expecting no matching series.")
}
seriesSet, err := readSeriesSet(querier.Select(labels.NewEqualMatcher("foo", "bar")))
require.NoError(t, err)
require.Equal(t, seriesSet, map[string][]sample{})
err = app.Commit()
if err != nil {
t.Fatalf("Error committing: %q", err)
}
require.NoError(t, err)
querier = db.Querier(0, 1)
defer querier.Close()
seriesSet = querier.Select(labels.NewEqualMatcher("foo", "bar"))
if !seriesSet.Next() {
t.Fatalf("Error, was expecting a matching series.")
}
seriesSet, err = readSeriesSet(querier.Select(labels.NewEqualMatcher("foo", "bar")))
require.NoError(t, err)
require.Equal(t, seriesSet, map[string][]sample{`{foo="bar"}`: []sample{{t: 0, v: 0}}})
}
func TestDataNotAvailableAfterRollback(t *testing.T) {
@ -70,20 +86,15 @@ func TestDataNotAvailableAfterRollback(t *testing.T) {
app := db.Appender()
_, err = app.Add(labels.FromStrings("foo", "bar"), 0, 0)
if err != nil {
t.Fatalf("Error adding sample: %q", err)
}
require.NoError(t, err)
err = app.Rollback()
if err != nil {
t.Fatalf("Error rolling back: %q", err)
}
require.NoError(t, err)
querier := db.Querier(0, 1)
defer querier.Close()
seriesSet := querier.Select(labels.NewEqualMatcher("foo", "bar"))
if seriesSet.Next() {
t.Fatalf("Error, was expecting no matching series.")
}
seriesSet, err := readSeriesSet(querier.Select(labels.NewEqualMatcher("foo", "bar")))
require.NoError(t, err)
require.Equal(t, seriesSet, map[string][]sample{})
}