test: migrate LiteralTest to JUnit 5

[MartinWitt]

#3919

Change Log

The following bad smells are refactored:

JUnit4-@test

The JUnit 4 @Test annotation should be replaced with JUnit 5 @Test annotation.

JUnit4Assertion

The JUnit4 assertion should be replaced with JUnit5 Assertions.

The following has changed in the code:

JUnit4-@test

• Replaced junit 4 test annotation with junit 5 test annotation in testCharLiteralInNoClasspath
• Replaced junit 4 test annotation with junit 5 test annotation in testLiteralInForEachWithNoClasspath
• Replaced junit 4 test annotation with junit 5 test annotation in testBuildLiternal
• Replaced junit 4 test annotation with junit 5 test annotation in testFactoryLiternal
• Replaced junit 4 test annotation with junit 5 test annotation in testEscapedString
• Replaced junit 4 test annotation with junit 5 test annotation in testLiteralBase
• Replaced junit 4 test annotation with junit 5 test annotation in testLiteralBasePrinter

JUnit4Assertion

• Transformed junit4 assert to junit 5 assertion in testCharLiteralInNoClasspath
• Transformed junit4 assert to junit 5 assertion in testBuildLiternal
• Transformed junit4 assert to junit 5 assertion in testFactoryLiternal
• Transformed junit4 assert to junit 5 assertion in testEscapedString
• Transformed junit4 assert to junit 5 assertion in testLiteralBase
• Transformed junit4 assert to junit 5 assertion in testLiteralBasePrinter

[slarse]

Thanks @MartinWitt