When you are testing a Java class BankAccount, you probably write a test scenario like following.

{
    BankAccount bankAccount = new BankAccount("John Doe");
    bankAccount.deposit(1000);
    bankAccount.withdraw(110);
} 

Don't you think that it's cool if you can get a comparison window like this when you hit a bug?

thincrest library is for that.

You can find more on this example in Tutorial

thincrest(pronounced 'think rest') is a small library that does assertions such as Hamcrest[1] and Assert J[2]. It is designed to be able to balance following values

• Readable messages on failures.
• Readable test codes.
• Avoid fail->fix->run->fail->fix->run loop.
• Easy to use with various classes without writing custom matchers, although it is still possible.
• IDE friendliness.

It used to be a thin wrapper for Hamcrest ant it is the reason why this library was initially named so, but it is not anymore.

thincrest requires Java SE8 or later.

You can use following maven coordinate.

<dependency>
  <groupId>com.github.dakusui</groupId>
  <artifactId>thincrest</artifactId>
  <version>{VERSION}</version>
</dependency>

Replace {VERSION} with one that you are going to use such as 3.5.0. You can check available versions from here(The Central Repository). All released versions are listed here(GitHub).

• 0 "JUnit"
• 1 "Hamcrest"
• 2 "Summary of Changes in version 4.4", JUnit team
• 3 "Hamcrest" article in Wikipedia
• 4 "Assert J"
• 5 "Google Truth"