Don't spam regular log with json test fails

src/main/kotlin/ru/dbotthepony/kstarbound/json/JsonPatch.kt

@@ -21,15 +21,15 @@ enum class JsonPatch(val key: String) {
 
 			if (inverse) {
 				if (value == JsonNull.INSTANCE && get != JsonNull.INSTANCE) {
-					throw IllegalStateException("Expected $path to not contain anything")
+					throw JsonTestException("Expected $path to not contain anything")
 				} else if (value != JsonNull.INSTANCE && value == get) {
-					throw IllegalStateException("Expected $path to not contain $value")
+					throw JsonTestException("Expected $path to not contain $value")
 				}
 			} else {
 				if (value == JsonNull.INSTANCE && get == JsonNull.INSTANCE) {
-					throw IllegalStateException("Expected $path to contain anything")
+					throw JsonTestException("Expected $path to contain anything")
 				} else if (value != JsonNull.INSTANCE && get == JsonNull.INSTANCE) {
-					throw IllegalStateException("Expected $path to contain '$value', but found nothing")
+					throw JsonTestException("Expected $path to contain '$value', but found nothing")
 				} else if (value != JsonNull.INSTANCE && get != JsonNull.INSTANCE && value != get) {
 					var text = get.toString()
 
@@ -37,7 +37,7 @@ enum class JsonPatch(val key: String) {
 						text = text.substring(0, 40) + "..."
 					}
 
-					throw IllegalStateException("Expected $path to contain $value, but found $text")
+					throw JsonTestException("Expected $path to contain $value, but found $text")
 				}
 			}
 
@@ -80,6 +80,8 @@ enum class JsonPatch(val key: String) {
 
 	abstract fun apply(base: JsonElement, data: JsonObject): JsonElement
 
+	class JsonTestException(message: String) : IllegalStateException(message)
+
 	companion object {
 		private val LOGGER = LogManager.getLogger()
 
@@ -99,6 +101,8 @@ enum class JsonPatch(val key: String) {
 				if (element is JsonObject) {
 					try {
 						base = apply(base, element)
+					} catch (err: JsonTestException) {
+						LOGGER.debug("Test condition failed in {} at index {}: {}", source, i, err.message)
 					} catch (err: Throwable) {
 						LOGGER.error("Error while applying JSON patch from $source at index $i: ${err.message}")
 					}
@@ -109,6 +113,9 @@ enum class JsonPatch(val key: String) {
 								throw JsonSyntaxException("Expected JSON Object as patch data, got $sub")
 
 							base = apply(base, sub)
+						} catch (err: JsonTestException) {
+							LOGGER.debug("Test condition failed in {} at index {} -> {}: {}", source, i, i2, err.message)
+							break
 						} catch (err: Throwable) {
 							LOGGER.error("Error while applying JSON patch from $source at index $i -> $i2: ${err.message}")
 							break