[#369] Request reproducer

Signed-off-by: Nikita Zinkevich <n.zinkevich@yadro.com>

cmd/s3-playback/internal/playback/request_test.go

@@ -0,0 +1,98 @@
+package playback
+
+import (
+	"errors"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+var errNoMatches = errors.New("no matches found")
+
+func withoutValue(data map[string]string, field string) map[string]string {
+	result := make(map[string]string)
+	for k, v := range data {
+		result[k] = v
+	}
+	result[field] = ""
+
+	return result
+}
+
+func TestParseAuthHeader(t *testing.T) {
+	defaultHeader := "AWS4-HMAC-SHA256 Credential=oid0cid/20210809/us-east-1/s3/aws4_request, SignedHeaders=host;x-amz-content-sha256;x-amz-date, Signature=2811ccb9e242f41426738fb1f"
+
+	defaultAuthInfo := map[string]string{
+		"access_key_id":        "oid0cid",
+		"service":              "s3",
+		"region":               "us-east-1",
+		"v4_signature":         "2811ccb9e242f41426738fb1f",
+		"signed_header_fields": "host;x-amz-content-sha256;x-amz-date",
+		"date":                 "20210809",
+	}
+	for _, tc := range []struct {
+		title    string
+		header   string
+		err      error
+		expected map[string]string
+	}{
+		{
+			title:    "correct full header",
+			header:   defaultHeader,
+			err:      nil,
+			expected: defaultAuthInfo,
+		},
+		{
+			title:    "correct with empty region",
+			header:   strings.Replace(defaultHeader, "/us-east-1/", "//", 1),
+			err:      nil,
+			expected: withoutValue(defaultAuthInfo, "region"),
+		},
+		{
+			title:    "empty access key",
+			header:   strings.Replace(defaultHeader, "oid0cid", "", 1),
+			err:      errNoMatches,
+			expected: nil,
+		},
+		{
+			title:    "empty service",
+			header:   strings.Replace(defaultHeader, "/s3/", "//", 1),
+			err:      errNoMatches,
+			expected: nil,
+		},
+		{
+			title:    "empty date",
+			header:   strings.Replace(defaultHeader, "/20210809/", "//", 1),
+			err:      errNoMatches,
+			expected: nil,
+		},
+		{
+			title: "empty v4_signature",
+			header: strings.Replace(defaultHeader, "Signature=2811ccb9e242f41426738fb1f",
+				"Signature=", 1),
+			err:      errNoMatches,
+			expected: nil,
+		},
+		{
+			title: "empty signed_fields",
+			header: strings.Replace(defaultHeader, "SignedHeaders=host;x-amz-content-sha256;x-amz-date",
+				"SignedHeaders=", 1),
+			err:      errNoMatches,
+			expected: nil,
+		},
+		{
+			title: "empty signed_fields",
+			header: strings.Replace(defaultHeader, "SignedHeaders=host;x-amz-content-sha256;x-amz-date",
+				"SignedHeaders=", 1),
+			err:      errNoMatches,
+			expected: nil,
+		},
+	} {
+		t.Run(tc.title, func(t *testing.T) {
+			authInfo, err := parseAuthHeader(tc.header)
+			require.Equal(t, err, tc.err, tc.header)
+			require.Equal(t, tc.expected, authInfo, tc.header)
+		})
+	}
+}