Update tests to adhere to CEL formatting standard (#345)

This updates our test suite to follow the expectations set here:
https://github.com/google/cel-spec/blob/master/doc/extensions/strings.md

Related: google/cel-go#1133

Author: jchadwick-buf

tools/protovalidate-conformance/internal/cases/cases_duration.go

@@ -93,7 +93,7 @@ func durationSuite() suites.Suite {
 				Field:        results.FieldPath("val"),
 				Rule:         results.FieldPath("duration.in"),
 				ConstraintId: proto.String("duration.in"),
-				Message:      proto.String(`value must be in list [duration("1s"), duration("0.000001s")]`),
+				Message:      proto.String(`value must be in list [1s, 0.000001s]`),
 			}),
 		},
 		"not in/valid": {
@@ -115,7 +115,7 @@ func durationSuite() suites.Suite {
 				Field:        results.FieldPath("val"),
 				Rule:         results.FieldPath("duration.not_in"),
 				ConstraintId: proto.String("duration.not_in"),
-				Message:      proto.String(`value must not be in list [duration("0s")]`),
+				Message:      proto.String(`value must not be in list [0s]`),
 			}),
 		},
 		"lt/valid": {

tools/protovalidate-conformance/internal/cases/cases_kitchensink.go

@@ -49,7 +49,7 @@ func kitchenSinkSuite() suites.Suite {
 					Field:        results.FieldPath("val.double_in"),
 					Rule:         results.FieldPath("double.in"),
 					ConstraintId: proto.String("double.in"),
-					Message:      proto.String("value must be in list [456.789000, 123.000000]"),
+					Message:      proto.String("value must be in list [456.789, 123]"),
 				},
 				&validate.Violation{
 					Field:        results.FieldPath("val.enum_const"),
@@ -101,13 +101,13 @@ func kitchenSinkSuite() suites.Suite {
 					Field:        results.FieldPath("val.another.double_in"),
 					Rule:         results.FieldPath("double.in"),
 					ConstraintId: proto.String("double.in"),
-					Message:      proto.String("value must be in list [456.789000, 123.000000]"),
+					Message:      proto.String("value must be in list [456.789, 123]"),
 				},
 				&validate.Violation{
 					Field:        results.FieldPath("val.double_in"),
 					Rule:         results.FieldPath("double.in"),
 					ConstraintId: proto.String("double.in"),
-					Message:      proto.String("value must be in list [456.789000, 123.000000]"),
+					Message:      proto.String("value must be in list [456.789, 123]"),
 				},
 				&validate.Violation{
 					Field:        results.FieldPath("val.another.enum_const"),
@@ -194,13 +194,13 @@ func kitchenSinkSuite() suites.Suite {
 					Field:        results.FieldPath("val.double_in"),
 					Rule:         results.FieldPath("double.in"),
 					ConstraintId: proto.String("double.in"),
-					Message:      proto.String("value must be in list [456.789000, 123.000000]"),
+					Message:      proto.String("value must be in list [456.789, 123]"),
 				},
 				&validate.Violation{
 					Field:        results.FieldPath("val.nested.double_in"),
 					Rule:         results.FieldPath("double.in"),
 					ConstraintId: proto.String("double.in"),
-					Message:      proto.String("value must be in list [456.789000, 123.000000]"),
+					Message:      proto.String("value must be in list [456.789, 123]"),
 				},
 				&validate.Violation{
 					Field:        results.FieldPath("val.enum_const"),
@@ -281,7 +281,7 @@ func kitchenSinkSuite() suites.Suite {
 					Field:        results.FieldPath("val.double_in"),
 					Rule:         results.FieldPath("double.in"),
 					ConstraintId: proto.String("double.in"),
-					Message:      proto.String("value must be in list [456.789000, 123.000000]"),
+					Message:      proto.String("value must be in list [456.789, 123]"),
 				},
 				&validate.Violation{
 					Field:        results.FieldPath("val.enum_const"),

tools/protovalidate-conformance/internal/cases/cases_repeated.go

@@ -273,7 +273,7 @@ func repeatedSuite() suites.Suite {
 					Field:        results.FieldPath("val[0]"),
 					Rule:         results.FieldPath("repeated.items.string.in"),
 					ConstraintId: proto.String("string.in"),
-					Message:      proto.String(`value must be in list ["foo", "bar"]`),
+					Message:      proto.String(`value must be in list [foo, bar]`),
 				},
 			),
 		},
@@ -288,7 +288,7 @@ func repeatedSuite() suites.Suite {
 					Field:        results.FieldPath("val[0]"),
 					Rule:         results.FieldPath("repeated.items.string.not_in"),
 					ConstraintId: proto.String("string.not_in"),
-					Message:      proto.String("value must not be in list [\"foo\", \"bar\"]"),
+					Message:      proto.String("value must not be in list [foo, bar]"),
 				},
 			),
 		},