src/llvm-project/clang-tools-extra/test/clang-tidy/checkers/readability/avoid-nested-conditional-operator.cpp

// RUN: %check_clang_tidy %s readability-avoid-nested-conditional-operator %t

int NestInConditional = (true ? true : false) ? 1 : 2;
// CHECK-MESSAGES: :[[@LINE-1]]:26: warning: conditional operator is used as sub-expression of parent conditional operator, refrain from using nested conditional operators
// CHECK-MESSAGES: :[[@LINE-2]]:25: note: parent conditional operator here

int NestInTrue = true ? (true ? 1 : 2) : 2;
// CHECK-MESSAGES: :[[@LINE-1]]:26: warning: conditional operator is used as sub-expression of parent conditional operator, refrain from using nested conditional operators
// CHECK-MESSAGES: :[[@LINE-2]]:18: note: parent conditional operator here

int NestInFalse = true ? 1 : true ? 1 : 2;
// CHECK-MESSAGES: :[[@LINE-1]]:30: warning: conditional operator is used as sub-expression of parent conditional operator, refrain from using nested conditional operators
// CHECK-MESSAGES: :[[@LINE-2]]:19: note: parent conditional operator here
int NestInFalse2 = true ? 1 : (true ? 1 : 2);
// CHECK-MESSAGES: :[[@LINE-1]]:32: warning: conditional operator is used as sub-expression of parent conditional operator, refrain from using nested conditional operators
// CHECK-MESSAGES: :[[@LINE-2]]:20: note: parent conditional operator here

int NestWithParensis = true ? 1 : ((((true ? 1 : 2))));
// CHECK-MESSAGES: :[[@LINE-1]]:39: warning: conditional operator is used as sub-expression of parent conditional operator, refrain from using nested conditional operators
// CHECK-MESSAGES: :[[@LINE-2]]:24: note: parent conditional operator here

#define CONDITIONAL_EXPR (true ? 1 : 2)
// not diag for macro since it will not reduce readability
int NestWithMacro = true ? CONDITIONAL_EXPR : 2;