Rule that checks unnecessary boolean expressions, including ANDing (&&) or ORing (||) with true, false, null, or a Map/List/String/Number literal. This rule also checks for negation (!) of true, false, null, or a Map/List/String/Number literal. Examples include:

• def result = value && true
• if (false || value) { .. }
• return value && Boolean.FALSE
• result = value && "abc"
• result = null && value
• result = value && 123
• result = 678.123 || true
• result = value && [x, y]
• def result = [a:123] && value
• result = !true
• result = !false
• result = !Boolean.TRUE
• result = !null
• result = !"abc"
• result = ![a:123]
• result = ![a,b]

Authors:

Chris Mair