tsdb tests: make work with labels SymbolTable

Need to initialize decoders with SymbolTable.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>

tsdb/agent/db_test.go

@@ -184,7 +184,7 @@ func TestCommit(t *testing.T) {
 	// Read records from WAL and check for expected count of series, samples, and exemplars.
 	var (
 		r   = wlog.NewReader(sr)
-		dec record.Decoder
+		dec = record.NewDecoder(labels.NewSymbolTable())
 
 		walSeriesCount, walSamplesCount, walExemplarsCount, walHistogramCount, walFloatHistogramCount int
 	)
@@ -293,7 +293,7 @@ func TestRollback(t *testing.T) {
 	// Read records from WAL and check for expected count of series and samples.
 	var (
 		r   = wlog.NewReader(sr)
-		dec record.Decoder
+		dec = record.NewDecoder(labels.NewSymbolTable())
 
 		walSeriesCount, walSamplesCount, walHistogramCount, walFloatHistogramCount, walExemplarsCount int
 	)
@@ -737,7 +737,7 @@ func TestStorage_DuplicateExemplarsIgnored(t *testing.T) {
 	defer sr.Close()
 	r := wlog.NewReader(sr)
 
-	var dec record.Decoder
+	dec := record.NewDecoder(labels.NewSymbolTable())
 	for r.Next() {
 		rec := r.Record()
 		if dec.Type(rec) == record.Exemplars {

tsdb/db_test.go

@@ -4031,7 +4031,7 @@ func TestOOOWALWrite(t *testing.T) {
 
 		var (
 			records []interface{}
-			dec     record.Decoder
+			dec     record.Decoder = record.NewDecoder(labels.NewSymbolTable())
 		)
 		for r.Next() {
 			rec := r.Record()
@@ -5390,7 +5390,7 @@ func TestWBLAndMmapReplay(t *testing.T) {
 		require.NoError(t, err)
 		sr, err := wlog.NewSegmentsReader(originalWblDir)
 		require.NoError(t, err)
-		var dec record.Decoder
+		dec := record.NewDecoder(labels.NewSymbolTable())
 		r, markers, addedRecs := wlog.NewReader(sr), 0, 0
 		for r.Next() {
 			rec := r.Record()

tsdb/head_test.go

@@ -172,7 +172,7 @@ func readTestWAL(t testing.TB, dir string) (recs []interface{}) {
 		require.NoError(t, sr.Close())
 	}()
 
-	var dec record.Decoder
+	dec := record.NewDecoder(labels.NewSymbolTable())
 	r := wlog.NewReader(sr)
 
 	for r.Next() {

tsdb/record/record_test.go

@@ -29,7 +29,7 @@ import (
 
 func TestRecord_EncodeDecode(t *testing.T) {
 	var enc Encoder
-	var dec Decoder
+	dec := NewDecoder(labels.NewSymbolTable())
 
 	series := []RefSeries{
 		{
@@ -187,7 +187,7 @@ func TestRecord_EncodeDecode(t *testing.T) {
 // Bugfix check for pull/521 and pull/523.
 func TestRecord_Corrupted(t *testing.T) {
 	var enc Encoder
-	var dec Decoder
+	dec := NewDecoder(labels.NewSymbolTable())
 
 	t.Run("Test corrupted series record", func(t *testing.T) {
 		series := []RefSeries{

tsdb/wal_test.go

@@ -510,7 +510,7 @@ func TestMigrateWAL_Fuzz(t *testing.T) {
 
 	r := wlog.NewReader(sr)
 	var res []interface{}
-	var dec record.Decoder
+	dec := record.NewDecoder(labels.NewSymbolTable())
 
 	for r.Next() {
 		rec := r.Record()

tsdb/wlog/checkpoint_test.go

@@ -237,7 +237,7 @@ func TestCheckpoint(t *testing.T) {
 			require.NoError(t, err)
 			defer sr.Close()
 
-			var dec record.Decoder
+			dec := record.NewDecoder(labels.NewSymbolTable())
 			var series []record.RefSeries
 			var metadata []record.RefMetadata
 			r := NewReader(sr)