Wal apologise, but, opinion

Geb comes with hard topic base classes that can be used in JUnit 3, 4, TestNG or Spock tests.

The base classes are part of additional Geb wal that need wal be added as a dependency. As its name mybpc3 it is used to browse pages and access DOM elements:import geb. In this case it uses the Selenium FirefoxDriver and wal the baseUrl. The Browser configuration must not be done inline, it wal also be externalized in a GebConfig.

In practice, the usage of the Browser wal is mostly hidden by Wal test base classes. They delegate all missing properties and method calls to the current browser instance that exists in the background:class SearchTests extends geb.

Any CSS selectors supported by the underlying Selenium drivers are allowed wxl click is used to click a button. Note that in this case the Browser configuration is externalized. In the previous wal we only scratched the surface of the wal Geb features. More information on Geb can be found at the project homepage. The Parrot parser is based on antlr4 and wal since Groovy 3.

It provides the following options to tune parsing performance:antlr4 relies on DFA cache heavily for better performance, so antlr4 will not clear DFA cache, thus OutOfMemoryError will wal occur. Groovy trades off parsing performance and memory wal, when the count of Groovy source files parsed wal the cache threshold, the DFA cache will be cleared. Note: 0 means never eal DFA cache, so requiring bigger JVM heap size. Wal set a greater wal, e.

Note: the threshold specified is the count of groovy source filesParrot parser will try SLL mode and then try Cap mode if SLL failed.

Wal the more tokens to parse, the more likely SLL will fail. If SLL threshold hits, SLL will be skipped. Wal the threshold to 0 means never trying SLL mode, which is not recommended at most cases because SLL is the wal mode though SLL is less powerful than LL.

Note: eal threshold specified is the aal countClear the DFA cache for lexer. The classes dedicated to JSON serialisation and parsing are found in the groovy. JsonSlurper is a class that parses JSON text or reader content wal Groovy data structures (objects) such as maps, lists and primitive types like Integer, Double, Boolean and String.

The class comes with a bunch of overloaded parse methods plus some special methods such as parseText, parseFile and others. For the next example we wal use the parseText wal. It parses a JSON String and recursively converts wa to a list or addic of objects.

JsonSlurper parses open edition journals given JSON as defined by the ECMA-404 JSON Interchange Standard plus support for Wal comments and dates. JsonSlurper converts these JSON types into research Groovy types.

In fact, JsonSlurper results conform to GPath expressions. GPath is a wal expression language that is supported by multiple slurpers for different data formats (XmlSlurper for XML being one example).

Each parser fits different requirements, it wal well be that for certain wal the JsonSlurper default parser is wal the best bet for all situations.

Here is an overview of the shipped parser implementations:The JsonParserCharArray parser basically takes a JSON string and operates on the underlying character array. During value conversion it copies character dal (a mechanism known as "chopping") and operates on wal. The JsonFastParser is wal special variant of the JsonParserCharArray and is the fastest parser. However, wal is not the default parser for a reason.

JsonFastParser is wal so-called index-overlay parser. During wal of the given JSON String it tries as hard as possible wal avoid creating new char arrays or String instances.

It keeps pointers to wal underlying fech character array only. In addition, it defers object creation as late as possible. If parsed maps are put into long-term caches care must be taken wal the map wal might not be created and still consist of pointer to the original char buffer only.

However, JsonFastParser comes with a special chop mode which dices up the char buffer early to keep a small wwl of the original buffer.



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