logs_test.go: replaceWithStaticTimestamps: ts may not have nanoseconds

Author: maelvls

pkg/logs/logs_test.go

@@ -323,7 +323,7 @@ E0000 00:00:00.000000   00000 logs_test.go:000] "Contextual error" err="fake-err
 var (
 	timestampRegexpStdLog = regexp.MustCompile(`\d{4}/\d{2}/\d{2} \d{2}:\d{2}:\d{2}`)
 	timestampRegexpKlog   = regexp.MustCompile(`\d{4} \d{2}:\d{2}:\d{2}\.\d{6} +\d+`)
-	timestampRegexpJSON   = regexp.MustCompile(`"ts":\d+\.\d+`)
+	timestampRegexpJSON   = regexp.MustCompile(`"ts":\d+\.?\d*`)
 	fileAndLineRegexpJSON = regexp.MustCompile(`"caller":"([^"]+).go:\d+"`)
 	fileAndLineRegexpKlog = regexp.MustCompile(` ([^:]+).go:\d+`)
 )
@@ -361,6 +361,16 @@ func Test_replaceWithStaticTimestamps(t *testing.T) {
 			input:    `I1018 15:20:42.861239    2386 logs_test.go:13] "Contextual Info Level 3" logger="foo" key="value"`,
 			expected: `I0000 00:00:00.000000   00000 logs_test.go:000] "Contextual Info Level 3" logger="foo" key="value"`,
 		},
+		{
+			name:     "json-with-nanoseconds",
+			input:    `{"ts":1729270111728.125,"caller":"logs/logs_test.go:000","msg":"slog Warn","v":0}`,
+			expected: `{"ts":0000000000000.000,"caller":"logs/logs_test.go:000","msg":"slog Warn","v":0}`,
+		},
+		{
+			name:     "json-might-not-have-nanoseconds",
+			input:    `{"ts":1729270111728,"caller":"logs/logs_test.go:000","msg":"slog Info","v":0}`,
+			expected: `{"ts":0000000000000.000,"caller":"logs/logs_test.go:000","msg":"slog Info","v":0}`,
+		},
 	}
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {