From 345a7abea2cf18d7ba255dc881390a42fe58878b Mon Sep 17 00:00:00 2001
From: Jesus Vazquez <jesusvzpg@gmail.com>
Date: Thu, 20 Jun 2024 13:06:59 +0200
Subject: [PATCH] progress

---
 promql/parser/lex.go          |   4 ++
 promql/parser/printer_test.go | 119 +---------------------------------
 2 files changed, 5 insertions(+), 118 deletions(-)

diff --git a/promql/parser/lex.go b/promql/parser/lex.go
index cf5719c860..df91d7bd2b 100644
--- a/promql/parser/lex.go
+++ b/promql/parser/lex.go
@@ -471,6 +471,10 @@ func lexStatements(l *Lexer) stateFn {
 			skipSpaces(l)
 		}
 		l.bracketOpen = true
+		if l.peek() == '^' {
+			l.emit(POW)
+			l.next()
+		}
 		return lexDuration
 	case r == ']':
 		if !l.bracketOpen {
diff --git a/promql/parser/printer_test.go b/promql/parser/printer_test.go
index f224d841d0..3cc5ae7030 100644
--- a/promql/parser/printer_test.go
+++ b/promql/parser/printer_test.go
@@ -29,124 +29,7 @@ func TestExprString(t *testing.T) {
 		in, out string
 	}{
 		{
-			in:  `sum by() (task:errors:rate10s{job="s"})`,
-			out: `sum(task:errors:rate10s{job="s"})`,
-		},
-		{
-			in:  `sum by(code) (task:errors:rate10s{job="s"})`,
-			out: `sum by (code) (task:errors:rate10s{job="s"})`,
-		},
-		{
-			in:  `sum without() (task:errors:rate10s{job="s"})`,
-			out: `sum without () (task:errors:rate10s{job="s"})`,
-		},
-		{
-			in:  `sum without(instance) (task:errors:rate10s{job="s"})`,
-			out: `sum without (instance) (task:errors:rate10s{job="s"})`,
-		},
-		{
-			in: `topk(5, task:errors:rate10s{job="s"})`,
-		},
-		{
-			in: `count_values("value", task:errors:rate10s{job="s"})`,
-		},
-		{
-			in:  `a - on() c`,
-			out: `a - on () c`,
-		},
-		{
-			in:  `a - on(b) c`,
-			out: `a - on (b) c`,
-		},
-		{
-			in:  `a - on(b) group_left(x) c`,
-			out: `a - on (b) group_left (x) c`,
-		},
-		{
-			in:  `a - on(b) group_left(x, y) c`,
-			out: `a - on (b) group_left (x, y) c`,
-		},
-		{
-			in:  `a - on(b) group_left c`,
-			out: `a - on (b) group_left () c`,
-		},
-		{
-			in:  `a - on(b) group_left() (c)`,
-			out: `a - on (b) group_left () (c)`,
-		},
-		{
-			in:  `a - ignoring(b) c`,
-			out: `a - ignoring (b) c`,
-		},
-		{
-			in:  `a - ignoring() c`,
-			out: `a - c`,
-		},
-		{
-			in: `up > bool 0`,
-		},
-		{
-			in: `a offset 1m`,
-		},
-		{
-			in: `a offset -7m`,
-		},
-		{
-			in: `a{c="d"}[5m] offset 1m`,
-		},
-		{
-			in: `a[5m] offset 1m`,
-		},
-		{
-			in: `a[12m] offset -3m`,
-		},
-		{
-			in: `a[1h:5m] offset 1m`,
-		},
-		{
-			in: `{__name__="a"}`,
-		},
-		{
-			in: `a{b!="c"}[1m]`,
-		},
-		{
-			in: `a{b=~"c"}[1m]`,
-		},
-		{
-			in: `a{b!~"c"}[1m]`,
-		},
-		{
-			in:  `a @ 10`,
-			out: `a @ 10.000`,
-		},
-		{
-			in:  `a[1m] @ 10`,
-			out: `a[1m] @ 10.000`,
-		},
-		{
-			in: `a @ start()`,
-		},
-		{
-			in: `a @ end()`,
-		},
-		{
-			in: `a[1m] @ start()`,
-		},
-		{
-			in: `a[1m] @ end()`,
-		},
-		{
-			in: `{__name__="",a="x"}`,
-		},
-		{
-			in: `{"a.b"="c"}`,
-		},
-		{
-			in: `{"0"="1"}`,
-		},
-		{
-			in:  `{"_0"="1"}`,
-			out: `{_0="1"}`,
+			in: `a[^1m]`,
 		},
 	}