mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-11-21 14:44:00 +00:00
346 lines
8.7 KiB
Go
346 lines
8.7 KiB
Go
package promql
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import (
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"reflect"
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"testing"
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)
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func TestUnescapeIdent(t *testing.T) {
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f := func(s, resultExpected string) {
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t.Helper()
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result := unescapeIdent(s)
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if result != resultExpected {
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t.Fatalf("unexpected result for unescapeIdent(%q); got %q; want %q", s, result, resultExpected)
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}
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}
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f("", "")
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f("a", "a")
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f("\\", "")
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f(`\\`, `\`)
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f(`\foo\-bar`, `foo-bar`)
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f(`a\\\\b\"c\d`, `a\\b"cd`)
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f(`foo.bar:baz_123`, `foo.bar:baz_123`)
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f(`foo\ bar`, `foo bar`)
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f(`\x21`, `!`)
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f(`\xeDfoo\x2Fbar\-\xqw\x`, "\xedfoo\x2fbar-xqwx")
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}
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func TestAppendEscapedIdent(t *testing.T) {
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f := func(s, resultExpected string) {
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t.Helper()
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result := appendEscapedIdent(nil, []byte(s))
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if string(result) != resultExpected {
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t.Fatalf("unexpected result for appendEscapedIdent(%q); got %q; want %q", s, result, resultExpected)
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}
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}
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f(`a`, `a`)
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f(`a.b:c_23`, `a.b:c_23`)
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f(`a b-cd+dd\`, `a\ b\-cd\+dd\\`)
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f("a\x1E\x20\xee", `a\x1e\ \xee`)
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f("\x2e\x2e", `\x2e.`)
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}
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func TestScanIdent(t *testing.T) {
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f := func(s, resultExpected string) {
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t.Helper()
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result := scanIdent(s)
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if result != resultExpected {
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t.Fatalf("unexpected result for scanIdent(%q): got %q; want %q", s, result, resultExpected)
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}
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}
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f("a", "a")
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f("foo.bar:baz_123", "foo.bar:baz_123")
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f("a+b", "a")
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f("foo()", "foo")
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f(`a\-b+c`, `a\-b`)
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f(`a\ b\\\ c\`, `a\ b\\\ c\`)
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}
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func TestLexerNextPrev(t *testing.T) {
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var lex lexer
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lex.Init("foo bar baz")
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if lex.Token != "" {
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t.Fatalf("unexpected token got: %q; want %q", lex.Token, "")
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}
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if err := lex.Next(); err != nil {
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t.Fatalf("unexpeted error: %s", err)
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}
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if lex.Token != "foo" {
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t.Fatalf("unexpected token got: %q; want %q", lex.Token, "foo")
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}
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// Rewind before the first item.
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lex.Prev()
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if lex.Token != "" {
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t.Fatalf("unexpected token got: %q; want %q", lex.Token, "")
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}
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if err := lex.Next(); err != nil {
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t.Fatalf("unexpected error: %s", err)
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}
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if lex.Token != "foo" {
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t.Fatalf("unexpected token got: %q; want %q", lex.Token, "foo")
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}
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if err := lex.Next(); err != nil {
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t.Fatalf("unexpected error: %s", err)
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}
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if lex.Token != "bar" {
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t.Fatalf("unexpected token got: %q; want %q", lex.Token, "bar")
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}
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// Rewind to the first item.
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lex.Prev()
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if lex.Token != "foo" {
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t.Fatalf("unexpected token got: %q; want %q", lex.Token, "foo")
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}
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if err := lex.Next(); err != nil {
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t.Fatalf("unexpected error: %s", err)
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}
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if lex.Token != "bar" {
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t.Fatalf("unexpected token got: %q; want %q", lex.Token, "bar")
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}
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if err := lex.Next(); err != nil {
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t.Fatalf("unexpected error: %s", err)
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}
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if lex.Token != "baz" {
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t.Fatalf("unexpected token got: %q; want %q", lex.Token, "baz")
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}
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// Go beyond the token stream.
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if err := lex.Next(); err != nil {
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t.Fatalf("unexpected error: %s", err)
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}
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if lex.Token != "" {
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t.Fatalf("unexpected token got: %q; want %q", lex.Token, "")
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}
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if !isEOF(lex.Token) {
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t.Fatalf("expecting eof")
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}
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lex.Prev()
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if lex.Token != "baz" {
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t.Fatalf("unexpected token got: %q; want %q", lex.Token, "baz")
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}
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// Go multiple times lex.Next() beyond token stream.
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if err := lex.Next(); err != nil {
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t.Fatalf("unexpected error: %s", err)
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}
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if lex.Token != "" {
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t.Fatalf("unexpected token got: %q; want %q", lex.Token, "")
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}
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if !isEOF(lex.Token) {
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t.Fatalf("expecting eof")
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}
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if err := lex.Next(); err != nil {
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t.Fatalf("unexpected error: %s", err)
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}
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if lex.Token != "" {
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t.Fatalf("unexpected token got: %q; want %q", lex.Token, "")
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}
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if !isEOF(lex.Token) {
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t.Fatalf("expecting eof")
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}
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lex.Prev()
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if lex.Token != "" {
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t.Fatalf("unexpected token got: %q; want %q", lex.Token, "")
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}
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if !isEOF(lex.Token) {
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t.Fatalf("expecting eof")
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}
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}
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func TestLexerSuccess(t *testing.T) {
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var s string
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var expectedTokens []string
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// An empty string
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s = ""
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expectedTokens = nil
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testLexerSuccess(t, s, expectedTokens)
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// String with whitespace
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s = " \n\t\r "
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expectedTokens = nil
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testLexerSuccess(t, s, expectedTokens)
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// Just metric name
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s = "metric"
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expectedTokens = []string{"metric"}
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testLexerSuccess(t, s, expectedTokens)
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// Metric name with spec chars
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s = ":foo.bar_"
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expectedTokens = []string{":foo.bar_"}
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testLexerSuccess(t, s, expectedTokens)
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// Metric name with window
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s = "metric[5m] "
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expectedTokens = []string{"metric", "[", "5m", "]"}
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testLexerSuccess(t, s, expectedTokens)
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// Metric name with tag filters
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s = ` metric:12.34{a="foo", b != "bar", c=~ "x.+y", d !~ "zzz"}`
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expectedTokens = []string{`metric:12.34`, `{`, `a`, `=`, `"foo"`, `,`, `b`, `!=`, `"bar"`, `,`, `c`, `=~`, `"x.+y"`, `,`, `d`, `!~`, `"zzz"`, `}`}
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testLexerSuccess(t, s, expectedTokens)
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// Metric name with offset
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s = ` metric offset 10d `
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expectedTokens = []string{`metric`, `offset`, `10d`}
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testLexerSuccess(t, s, expectedTokens)
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// Func call
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s = `sum ( metric{x="y" } [5m] offset 10h)`
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expectedTokens = []string{`sum`, `(`, `metric`, `{`, `x`, `=`, `"y"`, `}`, `[`, `5m`, `]`, `offset`, `10h`, `)`}
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testLexerSuccess(t, s, expectedTokens)
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// Binary op
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s = `a+b or c % d and e unless f`
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expectedTokens = []string{`a`, `+`, `b`, `or`, `c`, `%`, `d`, `and`, `e`, `unless`, `f`}
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testLexerSuccess(t, s, expectedTokens)
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// Numbers
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s = `3+1.2-.23+4.5e5-78e-6+1.24e+45-NaN+Inf`
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expectedTokens = []string{`3`, `+`, `1.2`, `-`, `.23`, `+`, `4.5e5`, `-`, `78e-6`, `+`, `1.24e+45`, `-`, `NaN`, `+`, `Inf`}
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testLexerSuccess(t, s, expectedTokens)
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s = `12.34`
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expectedTokens = []string{`12.34`}
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testLexerSuccess(t, s, expectedTokens)
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// Strings
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s = `""''` + "``" + `"\\" '\\' "\"" '\''"\\\"\\"`
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expectedTokens = []string{`""`, `''`, "``", `"\\"`, `'\\'`, `"\""`, `'\''`, `"\\\"\\"`}
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testLexerSuccess(t, s, expectedTokens)
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s = " `foo\\\\\\`бар` "
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expectedTokens = []string{"`foo\\\\\\`бар`"}
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testLexerSuccess(t, s, expectedTokens)
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s = `# comment # sdf
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foobar # comment
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baz
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# yet another comment`
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expectedTokens = []string{"foobar", "baz"}
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testLexerSuccess(t, s, expectedTokens)
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}
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func testLexerSuccess(t *testing.T, s string, expectedTokens []string) {
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t.Helper()
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var lex lexer
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lex.Init(s)
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var tokens []string
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for {
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if err := lex.Next(); err != nil {
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t.Fatalf("unexpected error: %s", err)
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}
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if isEOF(lex.Token) {
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break
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}
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tokens = append(tokens, lex.Token)
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}
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if !reflect.DeepEqual(tokens, expectedTokens) {
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t.Fatalf("unexected tokens\ngot\n%q\nwant\n%q", tokens, expectedTokens)
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}
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}
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func TestLexerError(t *testing.T) {
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// Invalid identifier
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testLexerError(t, ".foo")
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// Incomplete string
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testLexerError(t, `"foobar`)
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testLexerError(t, `'`)
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testLexerError(t, "`")
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// Unrecognized char
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testLexerError(t, "тест")
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// Invalid numbers
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testLexerError(t, `.`)
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testLexerError(t, `123.`)
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testLexerError(t, `12e`)
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testLexerError(t, `1.2e`)
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testLexerError(t, `1.2E+`)
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testLexerError(t, `1.2E-`)
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}
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func testLexerError(t *testing.T, s string) {
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t.Helper()
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var lex lexer
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lex.Init(s)
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for {
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if err := lex.Next(); err != nil {
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// Expected error
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break
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}
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if isEOF(lex.Token) {
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t.Fatalf("expecting error during parse")
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}
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}
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// Try calling Next again. It must return error.
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if err := lex.Next(); err == nil {
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t.Fatalf("expecting non-nil error")
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}
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}
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func TestDurationSuccess(t *testing.T) {
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// Integer durations
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testDurationSuccess(t, "123s", 42, 123*1000)
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testDurationSuccess(t, "123m", 42, 123*60*1000)
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testDurationSuccess(t, "1h", 42, 1*60*60*1000)
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testDurationSuccess(t, "2d", 42, 2*24*60*60*1000)
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testDurationSuccess(t, "3w", 42, 3*7*24*60*60*1000)
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testDurationSuccess(t, "4y", 42, 4*365*24*60*60*1000)
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testDurationSuccess(t, "1i", 42*1000, 42*1000)
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testDurationSuccess(t, "3i", 42, 3*42)
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// Float durations
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testDurationSuccess(t, "0.234s", 42, 234)
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testDurationSuccess(t, "1.5s", 42, 1.5*1000)
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testDurationSuccess(t, "1.5m", 42, 1.5*60*1000)
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testDurationSuccess(t, "1.2h", 42, 1.2*60*60*1000)
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testDurationSuccess(t, "1.1d", 42, 1.1*24*60*60*1000)
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testDurationSuccess(t, "1.1w", 42, 1.1*7*24*60*60*1000)
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testDurationSuccess(t, "1.3y", 42, 1.3*365*24*60*60*1000)
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testDurationSuccess(t, "0.1i", 12340, 0.1*12340)
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}
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func testDurationSuccess(t *testing.T, s string, step, expectedD int64) {
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t.Helper()
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d, err := DurationValue(s, step)
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if err != nil {
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t.Fatalf("unexpected error: %s", err)
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}
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if d != expectedD {
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t.Fatalf("unexpected duration; got %d; want %d", d, expectedD)
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}
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}
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func TestDurationError(t *testing.T) {
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testDurationError(t, "")
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testDurationError(t, "foo")
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testDurationError(t, "m")
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testDurationError(t, "12")
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testDurationError(t, "1.23")
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testDurationError(t, "1.23mm")
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testDurationError(t, "123q")
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}
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func testDurationError(t *testing.T, s string) {
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t.Helper()
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if isDuration(s) {
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t.Fatalf("unexpected valud duration %q", s)
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}
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d, err := DurationValue(s, 42)
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if err == nil {
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t.Fatalf("expecting non-nil error for duration %q", s)
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}
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if d != 0 {
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t.Fatalf("expecting zero duration; got %d", d)
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}
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}
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