Hide multi line secrets from log (#671)

close #388

pipeline/shared/replace_secrets_test.go

@@ -0,0 +1,33 @@
+package shared
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNewSecretsReplacer(t *testing.T) {
+	tc := []struct {
+		log     string
+		secrets []string
+		expect  string
+	}{{
+		log:     "start log\ndone",
+		secrets: []string{""},
+		expect:  "start log\ndone",
+	}, {
+		log:     `this IS secret: password`,
+		secrets: []string{"password", " IS "},
+		expect:  `this ******** secret: ********`,
+	}, {
+		log:     "start log\ndone\nnow\nan\nmulti line secret!! ;)",
+		secrets: []string{"an\nmulti line secret!!"},
+		expect:  "start log\ndone\nnow\n********\n******** ;)",
+	}}
+
+	for _, c := range tc {
+		rep := NewSecretsReplacer(c.secrets)
+		result := rep.Replace(c.log)
+		assert.EqualValues(t, c.expect, result)
+	}
+}