IDE, ideas/heuristics. See implementation-based tests, import statements, important terms, . See also in-memory database, inception, incremental/iterative development, incremental models, independence dummy/mock objects, . See also locality, independent objects, inheritance, completing/adapting existing test cases, delayed test refactoring, LSP, parallel test hierarchy, parameterizing the factory method, reusing superclass tests, substitution principle, test axioms, test class hierarchies by refactoring, testing abstract classes, testing interfaces, well-shaped hierarchies, inlining of class, installation tests, instance variable, integration tests, , , , IntelliJ, interaction charts, interaction tests, interfaces, intermediate results, internal class, InterruptedException, introducing unit tests to development team, intuition, italics,