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141 lines
2.5 KiB
Go
141 lines
2.5 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 parser
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import (
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"testing"
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"github.com/stretchr/testify/require"
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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 by() (task:errors:rate10s{job="s"})`,
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out: `sum(task:errors:rate10s{job="s"})`,
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},
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{
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in: `sum by(code) (task:errors:rate10s{job="s"})`,
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},
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{
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in: `sum without() (task:errors:rate10s{job="s"})`,
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},
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{
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in: `sum without(instance) (task:errors:rate10s{job="s"})`,
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},
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{
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in: `topk(5, task:errors:rate10s{job="s"})`,
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},
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{
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in: `count_values("value", task:errors:rate10s{job="s"})`,
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},
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{
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in: `a - on() c`,
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},
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{
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in: `a - on(b) c`,
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},
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{
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in: `a - on(b) group_left(x) c`,
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},
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{
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in: `a - on(b) group_left(x, y) c`,
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},
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{
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in: `a - on(b) group_left c`,
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out: `a - on(b) group_left() c`,
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},
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{
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in: `a - on(b) group_left() (c)`,
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},
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{
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in: `a - ignoring(b) c`,
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},
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{
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in: `a - ignoring() c`,
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out: `a - c`,
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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 offset -7m`,
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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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in: `a[12m] offset -3m`,
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},
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{
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in: `a[1h:5m] offset 1m`,
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},
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{
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in: `{__name__="a"}`,
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},
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{
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in: `a{b!="c"}[1m]`,
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},
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{
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in: `a{b=~"c"}[1m]`,
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},
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{
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in: `a{b!~"c"}[1m]`,
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},
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{
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in: `a @ 10`,
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out: `a @ 10.000`,
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},
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{
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in: `a[1m] @ 10`,
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out: `a[1m] @ 10.000`,
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},
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{
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in: `a @ start()`,
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},
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{
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in: `a @ end()`,
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},
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{
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in: `a[1m] @ start()`,
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},
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{
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in: `a[1m] @ end()`,
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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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require.NoError(t, err)
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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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require.Equal(t, exp, expr.String())
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}
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}
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