test(readability): used embedded FS for fixtures

Signed-off-by: Frederic BIDON <fredbi@yahoo.com>

Author: fredbi

circular_test.go

@@ -266,7 +266,12 @@ func TestCircular_RemoteExpandAzure(t *testing.T) {
 	require.NotNil(t, pth1)
 
 	// check expected remaining $ref
-	assertRefInJSONRegexp(t, jazon, `^(#/definitions/)|(networkInterface.json#/definitions/)|(networkSecurityGroup.json#/definitions/)|(network.json#/definitions)|(virtualNetworkTap.json#/definitions/)|(virtualNetwork.json#/definitions/)|(privateEndpoint.json#/definitions/)|(\./examples/)`)
+	assertRefInJSONRegexp(t, jazon,
+		`^(#/definitions/)|(networkInterface.json#/definitions/)|`+
+			`(networkSecurityGroup.json#/definitions/)|(network.json#/definitions)|`+
+			`(virtualNetworkTap.json#/definitions/)|(virtualNetwork.json#/definitions/)|`+
+			`(privateEndpoint.json#/definitions/)|(\./examples/)`,
+	)
 
 	// check all $ref resolve in the expanded root
 	// (filter out the remaining $ref in x-ms-example extensions, which are not expanded)