mirror of https://github.com/prometheus/prometheus
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
711 lines
17 KiB
711 lines
17 KiB
// Copyright 2015 The Prometheus Authors |
|
// Licensed under the Apache License, Version 2.0 (the "License"); |
|
// you may not use this file except in compliance with the License. |
|
// You may obtain a copy of the License at |
|
// |
|
// http://www.apache.org/licenses/LICENSE-2.0 |
|
// |
|
// Unless required by applicable law or agreed to in writing, software |
|
// distributed under the License is distributed on an "AS IS" BASIS, |
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
// See the License for the specific language governing permissions and |
|
// limitations under the License. |
|
|
|
package promql |
|
|
|
import ( |
|
"fmt" |
|
"reflect" |
|
"testing" |
|
) |
|
|
|
type testCase struct { |
|
input string |
|
expected []item |
|
fail bool |
|
seriesDesc bool // Whether to lex a series description. |
|
} |
|
|
|
var tests = []struct { |
|
name string |
|
tests []testCase |
|
}{ |
|
{ |
|
name: "common", |
|
tests: []testCase{ |
|
{ |
|
input: ",", |
|
expected: []item{{ItemComma, 0, ","}}, |
|
}, { |
|
input: "()", |
|
expected: []item{{ItemLeftParen, 0, `(`}, {ItemRightParen, 1, `)`}}, |
|
}, { |
|
input: "{}", |
|
expected: []item{{ItemLeftBrace, 0, `{`}, {ItemRightBrace, 1, `}`}}, |
|
}, { |
|
input: "[5m]", |
|
expected: []item{ |
|
{ItemLeftBracket, 0, `[`}, |
|
{ItemDuration, 1, `5m`}, |
|
{ItemRightBracket, 3, `]`}, |
|
}, |
|
}, { |
|
input: "\r\n\r", |
|
expected: []item{}, |
|
}, |
|
}, |
|
}, |
|
{ |
|
name: "numbers", |
|
tests: []testCase{ |
|
{ |
|
input: "1", |
|
expected: []item{{ItemNumber, 0, "1"}}, |
|
}, { |
|
input: "4.23", |
|
expected: []item{{ItemNumber, 0, "4.23"}}, |
|
}, { |
|
input: ".3", |
|
expected: []item{{ItemNumber, 0, ".3"}}, |
|
}, { |
|
input: "5.", |
|
expected: []item{{ItemNumber, 0, "5."}}, |
|
}, { |
|
input: "NaN", |
|
expected: []item{{ItemNumber, 0, "NaN"}}, |
|
}, { |
|
input: "nAN", |
|
expected: []item{{ItemNumber, 0, "nAN"}}, |
|
}, { |
|
input: "NaN 123", |
|
expected: []item{{ItemNumber, 0, "NaN"}, {ItemNumber, 4, "123"}}, |
|
}, { |
|
input: "NaN123", |
|
expected: []item{{ItemIdentifier, 0, "NaN123"}}, |
|
}, { |
|
input: "iNf", |
|
expected: []item{{ItemNumber, 0, "iNf"}}, |
|
}, { |
|
input: "Inf", |
|
expected: []item{{ItemNumber, 0, "Inf"}}, |
|
}, { |
|
input: "+Inf", |
|
expected: []item{{ItemADD, 0, "+"}, {ItemNumber, 1, "Inf"}}, |
|
}, { |
|
input: "+Inf 123", |
|
expected: []item{{ItemADD, 0, "+"}, {ItemNumber, 1, "Inf"}, {ItemNumber, 5, "123"}}, |
|
}, { |
|
input: "-Inf", |
|
expected: []item{{ItemSUB, 0, "-"}, {ItemNumber, 1, "Inf"}}, |
|
}, { |
|
input: "Infoo", |
|
expected: []item{{ItemIdentifier, 0, "Infoo"}}, |
|
}, { |
|
input: "-Infoo", |
|
expected: []item{{ItemSUB, 0, "-"}, {ItemIdentifier, 1, "Infoo"}}, |
|
}, { |
|
input: "-Inf 123", |
|
expected: []item{{ItemSUB, 0, "-"}, {ItemNumber, 1, "Inf"}, {ItemNumber, 5, "123"}}, |
|
}, { |
|
input: "0x123", |
|
expected: []item{{ItemNumber, 0, "0x123"}}, |
|
}, |
|
}, |
|
}, |
|
{ |
|
name: "strings", |
|
tests: []testCase{ |
|
{ |
|
input: "\"test\\tsequence\"", |
|
expected: []item{{ItemString, 0, `"test\tsequence"`}}, |
|
}, |
|
{ |
|
input: "\"test\\\\.expression\"", |
|
expected: []item{{ItemString, 0, `"test\\.expression"`}}, |
|
}, |
|
{ |
|
input: "\"test\\.expression\"", |
|
expected: []item{ |
|
{ItemError, 0, "unknown escape sequence U+002E '.'"}, |
|
{ItemString, 0, `"test\.expression"`}, |
|
}, |
|
}, |
|
{ |
|
input: "`test\\.expression`", |
|
expected: []item{{ItemString, 0, "`test\\.expression`"}}, |
|
}, |
|
{ |
|
// See https://github.com/prometheus/prometheus/issues/939. |
|
input: ".٩", |
|
fail: true, |
|
}, |
|
}, |
|
}, |
|
{ |
|
name: "durations", |
|
tests: []testCase{ |
|
{ |
|
input: "5s", |
|
expected: []item{{ItemDuration, 0, "5s"}}, |
|
}, { |
|
input: "123m", |
|
expected: []item{{ItemDuration, 0, "123m"}}, |
|
}, { |
|
input: "1h", |
|
expected: []item{{ItemDuration, 0, "1h"}}, |
|
}, { |
|
input: "3w", |
|
expected: []item{{ItemDuration, 0, "3w"}}, |
|
}, { |
|
input: "1y", |
|
expected: []item{{ItemDuration, 0, "1y"}}, |
|
}, |
|
}, |
|
}, |
|
{ |
|
name: "identifiers", |
|
tests: []testCase{ |
|
{ |
|
input: "abc", |
|
expected: []item{{ItemIdentifier, 0, "abc"}}, |
|
}, { |
|
input: "a:bc", |
|
expected: []item{{ItemMetricIdentifier, 0, "a:bc"}}, |
|
}, { |
|
input: "abc d", |
|
expected: []item{{ItemIdentifier, 0, "abc"}, {ItemIdentifier, 4, "d"}}, |
|
}, { |
|
input: ":bc", |
|
expected: []item{{ItemMetricIdentifier, 0, ":bc"}}, |
|
}, { |
|
input: "0a:bc", |
|
fail: true, |
|
}, |
|
}, |
|
}, |
|
{ |
|
name: "comments", |
|
tests: []testCase{ |
|
{ |
|
input: "# some comment", |
|
expected: []item{{ItemComment, 0, "# some comment"}}, |
|
}, { |
|
input: "5 # 1+1\n5", |
|
expected: []item{ |
|
{ItemNumber, 0, "5"}, |
|
{ItemComment, 2, "# 1+1"}, |
|
{ItemNumber, 8, "5"}, |
|
}, |
|
}, |
|
}, |
|
}, |
|
{ |
|
name: "operators", |
|
tests: []testCase{ |
|
{ |
|
input: `=`, |
|
expected: []item{{ItemAssign, 0, `=`}}, |
|
}, { |
|
// Inside braces equality is a single '=' character. |
|
input: `{=}`, |
|
expected: []item{{ItemLeftBrace, 0, `{`}, {ItemEQL, 1, `=`}, {ItemRightBrace, 2, `}`}}, |
|
}, { |
|
input: `==`, |
|
expected: []item{{ItemEQL, 0, `==`}}, |
|
}, { |
|
input: `!=`, |
|
expected: []item{{ItemNEQ, 0, `!=`}}, |
|
}, { |
|
input: `<`, |
|
expected: []item{{ItemLSS, 0, `<`}}, |
|
}, { |
|
input: `>`, |
|
expected: []item{{ItemGTR, 0, `>`}}, |
|
}, { |
|
input: `>=`, |
|
expected: []item{{ItemGTE, 0, `>=`}}, |
|
}, { |
|
input: `<=`, |
|
expected: []item{{ItemLTE, 0, `<=`}}, |
|
}, { |
|
input: `+`, |
|
expected: []item{{ItemADD, 0, `+`}}, |
|
}, { |
|
input: `-`, |
|
expected: []item{{ItemSUB, 0, `-`}}, |
|
}, { |
|
input: `*`, |
|
expected: []item{{ItemMUL, 0, `*`}}, |
|
}, { |
|
input: `/`, |
|
expected: []item{{ItemDIV, 0, `/`}}, |
|
}, { |
|
input: `^`, |
|
expected: []item{{ItemPOW, 0, `^`}}, |
|
}, { |
|
input: `%`, |
|
expected: []item{{ItemMOD, 0, `%`}}, |
|
}, { |
|
input: `AND`, |
|
expected: []item{{ItemLAND, 0, `AND`}}, |
|
}, { |
|
input: `or`, |
|
expected: []item{{ItemLOR, 0, `or`}}, |
|
}, { |
|
input: `unless`, |
|
expected: []item{{ItemLUnless, 0, `unless`}}, |
|
}, |
|
}, |
|
}, |
|
{ |
|
name: "aggregators", |
|
tests: []testCase{ |
|
{ |
|
input: `sum`, |
|
expected: []item{{ItemSum, 0, `sum`}}, |
|
}, { |
|
input: `AVG`, |
|
expected: []item{{ItemAvg, 0, `AVG`}}, |
|
}, { |
|
input: `MAX`, |
|
expected: []item{{ItemMax, 0, `MAX`}}, |
|
}, { |
|
input: `min`, |
|
expected: []item{{ItemMin, 0, `min`}}, |
|
}, { |
|
input: `count`, |
|
expected: []item{{ItemCount, 0, `count`}}, |
|
}, { |
|
input: `stdvar`, |
|
expected: []item{{ItemStdvar, 0, `stdvar`}}, |
|
}, { |
|
input: `stddev`, |
|
expected: []item{{ItemStddev, 0, `stddev`}}, |
|
}, |
|
}, |
|
}, |
|
{ |
|
name: "keywords", |
|
tests: []testCase{ |
|
{ |
|
input: "offset", |
|
expected: []item{{ItemOffset, 0, "offset"}}, |
|
}, { |
|
input: "by", |
|
expected: []item{{ItemBy, 0, "by"}}, |
|
}, { |
|
input: "without", |
|
expected: []item{{ItemWithout, 0, "without"}}, |
|
}, { |
|
input: "on", |
|
expected: []item{{ItemOn, 0, "on"}}, |
|
}, { |
|
input: "ignoring", |
|
expected: []item{{ItemIgnoring, 0, "ignoring"}}, |
|
}, { |
|
input: "group_left", |
|
expected: []item{{ItemGroupLeft, 0, "group_left"}}, |
|
}, { |
|
input: "group_right", |
|
expected: []item{{ItemGroupRight, 0, "group_right"}}, |
|
}, { |
|
input: "bool", |
|
expected: []item{{ItemBool, 0, "bool"}}, |
|
}, |
|
}, |
|
}, |
|
{ |
|
name: "selectors", |
|
tests: []testCase{ |
|
{ |
|
input: `台北`, |
|
fail: true, |
|
}, { |
|
input: `{台北='a'}`, |
|
fail: true, |
|
}, { |
|
input: `{0a='a'}`, |
|
fail: true, |
|
}, { |
|
input: `{foo='bar'}`, |
|
expected: []item{ |
|
{ItemLeftBrace, 0, `{`}, |
|
{ItemIdentifier, 1, `foo`}, |
|
{ItemEQL, 4, `=`}, |
|
{ItemString, 5, `'bar'`}, |
|
{ItemRightBrace, 10, `}`}, |
|
}, |
|
}, { |
|
input: `{foo="bar"}`, |
|
expected: []item{ |
|
{ItemLeftBrace, 0, `{`}, |
|
{ItemIdentifier, 1, `foo`}, |
|
{ItemEQL, 4, `=`}, |
|
{ItemString, 5, `"bar"`}, |
|
{ItemRightBrace, 10, `}`}, |
|
}, |
|
}, { |
|
input: `{foo="bar\"bar"}`, |
|
expected: []item{ |
|
{ItemLeftBrace, 0, `{`}, |
|
{ItemIdentifier, 1, `foo`}, |
|
{ItemEQL, 4, `=`}, |
|
{ItemString, 5, `"bar\"bar"`}, |
|
{ItemRightBrace, 15, `}`}, |
|
}, |
|
}, { |
|
input: `{NaN != "bar" }`, |
|
expected: []item{ |
|
{ItemLeftBrace, 0, `{`}, |
|
{ItemIdentifier, 1, `NaN`}, |
|
{ItemNEQ, 5, `!=`}, |
|
{ItemString, 8, `"bar"`}, |
|
{ItemRightBrace, 14, `}`}, |
|
}, |
|
}, { |
|
input: `{alert=~"bar" }`, |
|
expected: []item{ |
|
{ItemLeftBrace, 0, `{`}, |
|
{ItemIdentifier, 1, `alert`}, |
|
{ItemEQLRegex, 6, `=~`}, |
|
{ItemString, 8, `"bar"`}, |
|
{ItemRightBrace, 14, `}`}, |
|
}, |
|
}, { |
|
input: `{on!~"bar"}`, |
|
expected: []item{ |
|
{ItemLeftBrace, 0, `{`}, |
|
{ItemIdentifier, 1, `on`}, |
|
{ItemNEQRegex, 3, `!~`}, |
|
{ItemString, 5, `"bar"`}, |
|
{ItemRightBrace, 10, `}`}, |
|
}, |
|
}, { |
|
input: `{alert!#"bar"}`, fail: true, |
|
}, { |
|
input: `{foo:a="bar"}`, fail: true, |
|
}, |
|
}, |
|
}, |
|
{ |
|
name: "common errors", |
|
tests: []testCase{ |
|
{ |
|
input: `=~`, fail: true, |
|
}, { |
|
input: `!~`, fail: true, |
|
}, { |
|
input: `!(`, fail: true, |
|
}, { |
|
input: "1a", fail: true, |
|
}, |
|
}, |
|
}, |
|
{ |
|
name: "mismatched parentheses", |
|
tests: []testCase{ |
|
{ |
|
input: `(`, fail: true, |
|
}, { |
|
input: `())`, fail: true, |
|
}, { |
|
input: `(()`, fail: true, |
|
}, { |
|
input: `{`, fail: true, |
|
}, { |
|
input: `}`, fail: true, |
|
}, { |
|
input: "{{", fail: true, |
|
}, { |
|
input: "{{}}", fail: true, |
|
}, { |
|
input: `[`, fail: true, |
|
}, { |
|
input: `[[`, fail: true, |
|
}, { |
|
input: `[]]`, fail: true, |
|
}, { |
|
input: `[[]]`, fail: true, |
|
}, { |
|
input: `]`, fail: true, |
|
}, |
|
}, |
|
}, |
|
{ |
|
name: "encoding issues", |
|
tests: []testCase{ |
|
{ |
|
input: "\"\xff\"", fail: true, |
|
}, |
|
{ |
|
input: "`\xff`", fail: true, |
|
}, |
|
}, |
|
}, |
|
{ |
|
name: "series descriptions", |
|
tests: []testCase{ |
|
{ |
|
input: `{} _ 1 x .3`, |
|
expected: []item{ |
|
{ItemLeftBrace, 0, `{`}, |
|
{ItemRightBrace, 1, `}`}, |
|
{ItemSpace, 2, ` `}, |
|
{ItemBlank, 3, `_`}, |
|
{ItemSpace, 4, ` `}, |
|
{ItemNumber, 5, `1`}, |
|
{ItemSpace, 6, ` `}, |
|
{ItemTimes, 7, `x`}, |
|
{ItemSpace, 8, ` `}, |
|
{ItemNumber, 9, `.3`}, |
|
}, |
|
seriesDesc: true, |
|
}, |
|
{ |
|
input: `metric +Inf Inf NaN`, |
|
expected: []item{ |
|
{ItemIdentifier, 0, `metric`}, |
|
{ItemSpace, 6, ` `}, |
|
{ItemADD, 7, `+`}, |
|
{ItemNumber, 8, `Inf`}, |
|
{ItemSpace, 11, ` `}, |
|
{ItemNumber, 12, `Inf`}, |
|
{ItemSpace, 15, ` `}, |
|
{ItemNumber, 16, `NaN`}, |
|
}, |
|
seriesDesc: true, |
|
}, |
|
{ |
|
input: `metric 1+1x4`, |
|
expected: []item{ |
|
{ItemIdentifier, 0, `metric`}, |
|
{ItemSpace, 6, ` `}, |
|
{ItemNumber, 7, `1`}, |
|
{ItemADD, 8, `+`}, |
|
{ItemNumber, 9, `1`}, |
|
{ItemTimes, 10, `x`}, |
|
{ItemNumber, 11, `4`}, |
|
}, |
|
seriesDesc: true, |
|
}, |
|
}, |
|
}, |
|
{ |
|
name: "subqueries", |
|
tests: []testCase{ |
|
{ |
|
input: `test_name{on!~"bar"}[4m:4s]`, |
|
expected: []item{ |
|
{ItemIdentifier, 0, `test_name`}, |
|
{ItemLeftBrace, 9, `{`}, |
|
{ItemIdentifier, 10, `on`}, |
|
{ItemNEQRegex, 12, `!~`}, |
|
{ItemString, 14, `"bar"`}, |
|
{ItemRightBrace, 19, `}`}, |
|
{ItemLeftBracket, 20, `[`}, |
|
{ItemDuration, 21, `4m`}, |
|
{ItemColon, 23, `:`}, |
|
{ItemDuration, 24, `4s`}, |
|
{ItemRightBracket, 26, `]`}, |
|
}, |
|
}, |
|
{ |
|
input: `test:name{on!~"bar"}[4m:4s]`, |
|
expected: []item{ |
|
{ItemMetricIdentifier, 0, `test:name`}, |
|
{ItemLeftBrace, 9, `{`}, |
|
{ItemIdentifier, 10, `on`}, |
|
{ItemNEQRegex, 12, `!~`}, |
|
{ItemString, 14, `"bar"`}, |
|
{ItemRightBrace, 19, `}`}, |
|
{ItemLeftBracket, 20, `[`}, |
|
{ItemDuration, 21, `4m`}, |
|
{ItemColon, 23, `:`}, |
|
{ItemDuration, 24, `4s`}, |
|
{ItemRightBracket, 26, `]`}, |
|
}, |
|
}, { |
|
input: `test:name{on!~"b:ar"}[4m:4s]`, |
|
expected: []item{ |
|
{ItemMetricIdentifier, 0, `test:name`}, |
|
{ItemLeftBrace, 9, `{`}, |
|
{ItemIdentifier, 10, `on`}, |
|
{ItemNEQRegex, 12, `!~`}, |
|
{ItemString, 14, `"b:ar"`}, |
|
{ItemRightBrace, 20, `}`}, |
|
{ItemLeftBracket, 21, `[`}, |
|
{ItemDuration, 22, `4m`}, |
|
{ItemColon, 24, `:`}, |
|
{ItemDuration, 25, `4s`}, |
|
{ItemRightBracket, 27, `]`}, |
|
}, |
|
}, { |
|
input: `test:name{on!~"b:ar"}[4m:]`, |
|
expected: []item{ |
|
{ItemMetricIdentifier, 0, `test:name`}, |
|
{ItemLeftBrace, 9, `{`}, |
|
{ItemIdentifier, 10, `on`}, |
|
{ItemNEQRegex, 12, `!~`}, |
|
{ItemString, 14, `"b:ar"`}, |
|
{ItemRightBrace, 20, `}`}, |
|
{ItemLeftBracket, 21, `[`}, |
|
{ItemDuration, 22, `4m`}, |
|
{ItemColon, 24, `:`}, |
|
{ItemRightBracket, 25, `]`}, |
|
}, |
|
}, { // Nested Subquery. |
|
input: `min_over_time(rate(foo{bar="baz"}[2s])[5m:])[4m:3s]`, |
|
expected: []item{ |
|
|
|
{ItemIdentifier, 0, `min_over_time`}, |
|
{ItemLeftParen, 13, `(`}, |
|
{ItemIdentifier, 14, `rate`}, |
|
{ItemLeftParen, 18, `(`}, |
|
{ItemIdentifier, 19, `foo`}, |
|
{ItemLeftBrace, 22, `{`}, |
|
{ItemIdentifier, 23, `bar`}, |
|
{ItemEQL, 26, `=`}, |
|
{ItemString, 27, `"baz"`}, |
|
{ItemRightBrace, 32, `}`}, |
|
{ItemLeftBracket, 33, `[`}, |
|
{ItemDuration, 34, `2s`}, |
|
{ItemRightBracket, 36, `]`}, |
|
{ItemRightParen, 37, `)`}, |
|
{ItemLeftBracket, 38, `[`}, |
|
{ItemDuration, 39, `5m`}, |
|
{ItemColon, 41, `:`}, |
|
{ItemRightBracket, 42, `]`}, |
|
{ItemRightParen, 43, `)`}, |
|
{ItemLeftBracket, 44, `[`}, |
|
{ItemDuration, 45, `4m`}, |
|
{ItemColon, 47, `:`}, |
|
{ItemDuration, 48, `3s`}, |
|
{ItemRightBracket, 50, `]`}, |
|
}, |
|
}, |
|
// Subquery with offset. |
|
{ |
|
input: `test:name{on!~"b:ar"}[4m:4s] offset 10m`, |
|
expected: []item{ |
|
{ItemMetricIdentifier, 0, `test:name`}, |
|
{ItemLeftBrace, 9, `{`}, |
|
{ItemIdentifier, 10, `on`}, |
|
{ItemNEQRegex, 12, `!~`}, |
|
{ItemString, 14, `"b:ar"`}, |
|
{ItemRightBrace, 20, `}`}, |
|
{ItemLeftBracket, 21, `[`}, |
|
{ItemDuration, 22, `4m`}, |
|
{ItemColon, 24, `:`}, |
|
{ItemDuration, 25, `4s`}, |
|
{ItemRightBracket, 27, `]`}, |
|
{ItemOffset, 29, "offset"}, |
|
{ItemDuration, 36, "10m"}, |
|
}, |
|
}, { |
|
input: `min_over_time(rate(foo{bar="baz"}[2s])[5m:] offset 6m)[4m:3s]`, |
|
expected: []item{ |
|
|
|
{ItemIdentifier, 0, `min_over_time`}, |
|
{ItemLeftParen, 13, `(`}, |
|
{ItemIdentifier, 14, `rate`}, |
|
{ItemLeftParen, 18, `(`}, |
|
{ItemIdentifier, 19, `foo`}, |
|
{ItemLeftBrace, 22, `{`}, |
|
{ItemIdentifier, 23, `bar`}, |
|
{ItemEQL, 26, `=`}, |
|
{ItemString, 27, `"baz"`}, |
|
{ItemRightBrace, 32, `}`}, |
|
{ItemLeftBracket, 33, `[`}, |
|
{ItemDuration, 34, `2s`}, |
|
{ItemRightBracket, 36, `]`}, |
|
{ItemRightParen, 37, `)`}, |
|
{ItemLeftBracket, 38, `[`}, |
|
{ItemDuration, 39, `5m`}, |
|
{ItemColon, 41, `:`}, |
|
{ItemRightBracket, 42, `]`}, |
|
{ItemOffset, 44, `offset`}, |
|
{ItemDuration, 51, `6m`}, |
|
{ItemRightParen, 53, `)`}, |
|
{ItemLeftBracket, 54, `[`}, |
|
{ItemDuration, 55, `4m`}, |
|
{ItemColon, 57, `:`}, |
|
{ItemDuration, 58, `3s`}, |
|
{ItemRightBracket, 60, `]`}, |
|
}, |
|
}, |
|
{ |
|
input: `test:name{o:n!~"bar"}[4m:4s]`, |
|
fail: true, |
|
}, |
|
{ |
|
input: `test:name{on!~"bar"}[4m:4s:4h]`, |
|
fail: true, |
|
}, |
|
{ |
|
input: `test:name{on!~"bar"}[4m:4s:]`, |
|
fail: true, |
|
}, |
|
{ |
|
input: `test:name{on!~"bar"}[4m::]`, |
|
fail: true, |
|
}, |
|
{ |
|
input: `test:name{on!~"bar"}[:4s]`, |
|
fail: true, |
|
}, |
|
}, |
|
}, |
|
} |
|
|
|
// TestLexer tests basic functionality of the lexer. More elaborate tests are implemented |
|
// for the parser to avoid duplicated effort. |
|
func TestLexer(t *testing.T) { |
|
for _, typ := range tests { |
|
t.Run(typ.name, func(t *testing.T) { |
|
for i, test := range typ.tests { |
|
l := &lexer{ |
|
input: test.input, |
|
items: make(chan item), |
|
seriesDesc: test.seriesDesc, |
|
} |
|
go l.run() |
|
|
|
out := []item{} |
|
for it := range l.items { |
|
out = append(out, it) |
|
} |
|
|
|
lastItem := out[len(out)-1] |
|
if test.fail { |
|
if lastItem.typ != ItemError { |
|
t.Logf("%d: input %q", i, test.input) |
|
t.Fatalf("expected lexing error but did not fail") |
|
} |
|
continue |
|
} |
|
if lastItem.typ == ItemError { |
|
t.Logf("%d: input %q", i, test.input) |
|
t.Fatalf("unexpected lexing error at position %d: %s", lastItem.pos, lastItem) |
|
} |
|
|
|
if !reflect.DeepEqual(lastItem, item{ItemEOF, Pos(len(test.input)), ""}) { |
|
t.Logf("%d: input %q", i, test.input) |
|
t.Fatalf("lexing error: expected output to end with EOF item.\ngot:\n%s", expectedList(out)) |
|
} |
|
out = out[:len(out)-1] |
|
if !reflect.DeepEqual(out, test.expected) { |
|
t.Logf("%d: input %q", i, test.input) |
|
t.Fatalf("lexing mismatch:\nexpected:\n%s\ngot:\n%s", expectedList(test.expected), expectedList(out)) |
|
} |
|
} |
|
}) |
|
} |
|
} |
|
|
|
func expectedList(exp []item) string { |
|
s := "" |
|
for _, it := range exp { |
|
s += fmt.Sprintf("\t%#v\n", it) |
|
} |
|
return s |
|
}
|
|
|