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9d0112d7cf
This has the advantage that the user doesn't need to list all labels they want to keep (as with "by") but without having to worry about inconsistent labels as when there's only one time series (as with "keeping_common"). Almost all aggregation should use this rather than the existing two options as it's much less error prone and easier to maintain due to not having to always add in "job" plus whatever other common job-level labels you have like "region".
64 lines
1.5 KiB
Go
64 lines
1.5 KiB
Go
// Copyright 2015 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package promql
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import (
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"testing"
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)
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func TestExprString(t *testing.T) {
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// A list of valid expressions that are expected to be
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// returned as out when calling String(). If out is empty the output
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// is expected to equal the input.
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inputs := []struct {
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in, out string
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}{
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{
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in: `sum(task:errors:rate10s{job="s"}) BY (code)`,
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},
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{
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in: `sum(task:errors:rate10s{job="s"}) BY (code) KEEP_COMMON`,
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},
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{
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in: `sum(task:errors:rate10s{job="s"}) WITHOUT (instance)`,
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},
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{
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in: `up > BOOL 0`,
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},
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{
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in: `a OFFSET 1m`,
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},
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{
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in: `a{c="d"}[5m] OFFSET 1m`,
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},
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{
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in: `a[5m] OFFSET 1m`,
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},
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}
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for _, test := range inputs {
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expr, err := ParseExpr(test.in)
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if err != nil {
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t.Fatalf("parsing error for %q: %s", test.in, err)
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}
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exp := test.in
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if test.out != "" {
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exp = test.out
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}
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if expr.String() != exp {
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t.Fatalf("expected %q to be returned as:\n%s\ngot:\n%s\n", test.in, exp, expr.String())
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}
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}
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}
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