AryaWu/sqlite

1#include "sqliteInt.h"2#include "unity.h"3#include <string.h>4#include <stdlib.h>5 6/* The wrapper for the static function under test */7extern int test_dupedExprStructSize(const Expr *p, int flags);8 9void setUp(void) {10  /* no-op */11}12 13void tearDown(void) {14  /* no-op */15}16 17/* Helper to init an Expr to a known-zero state */18static void initExpr(Expr *p){19  memset(p, 0, sizeof(*p));20  /* p->flags left 0 unless test needs to set flags explicitly */21  /* Other fields default to NULL */22}23 24/* 1) flags == 0 -> always EXPR_FULLSIZE */25void test_dupedExprStructSize_flags_zero_returns_fullsize(void){26  Expr e;27  initExpr(&e);28 29  int rc = test_dupedExprStructSize(&e, 0);30  TEST_ASSERT_EQUAL_INT(EXPR_FULLSIZE, rc);31 32  /* Even with children present, flags==0 must still force FULLSIZE */33  Expr child;34  initExpr(&child);35  e.pLeft = &child;36  e.pRight = &child; /* doesn't affect the branch when flags==0 */37  rc = test_dupedExprStructSize(&e, 0);38  TEST_ASSERT_EQUAL_INT(EXPR_FULLSIZE, rc);39}40 41/* 2) flags == EXPRDUP_REDUCE and a left child -> REDUCEDSIZE | EP_Reduced */42void test_dupedExprStructSize_reduce_with_left_child_returns_reduced(void){43  Expr e, left;44  initExpr(&e);45  initExpr(&left);46 47  e.pLeft = &left; /* Having a left child should select reduced form */48  /* Ensure no disallowed flags are set for reduce mode */49  e.flags = 0;50 51  int rc = test_dupedExprStructSize(&e, EXPRDUP_REDUCE);52  TEST_ASSERT_EQUAL_INT((EXPR_REDUCEDSIZE | EP_Reduced), rc);53}54 55/* 3) flags == EXPRDUP_REDUCE and non-NULL x.pList (no left) -> REDUCEDSIZE | EP_Reduced */56void test_dupedExprStructSize_reduce_with_pList_returns_reduced(void){57  Expr e;58  initExpr(&e);59 60  e.pLeft = NULL;61  /* Use a non-NULL sentinel for pList. No dereference occurs in the target function. */62  e.x.pList = (ExprList*)(uintptr_t)1;63  e.flags = 0;64 65  int rc = test_dupedExprStructSize(&e, EXPRDUP_REDUCE);66  TEST_ASSERT_EQUAL_INT((EXPR_REDUCEDSIZE | EP_Reduced), rc);67 68  /* Cleanup: reset x.pList to avoid accidental reuse */69  e.x.pList = NULL;70}71 72/* 4) flags == EXPRDUP_REDUCE and a leaf (no left, no pList, and pRight==NULL)73      -> TOKENONLYSIZE | EP_TokenOnly */74void test_dupedExprStructSize_reduce_leaf_returns_tokenonly(void){75  Expr e;76  initExpr(&e);77 78  e.pLeft = NULL;79  e.pRight = NULL; /* Required by assert in token-only branch */80  e.x.pList = NULL;81  e.flags = 0;82 83  int rc = test_dupedExprStructSize(&e, EXPRDUP_REDUCE);84  TEST_ASSERT_EQUAL_INT((EXPR_TOKENONLYSIZE | EP_TokenOnly), rc);85}86 87/* 5) EP_FullSize flag forces FULLSIZE even when EXPRDUP_REDUCE is requested */88void test_dupedExprStructSize_ep_fullsize_forces_fullsize(void){89  Expr e, left;90  initExpr(&e);91  initExpr(&left);92 93  e.pLeft = &left; /* Would normally imply reduced when reducing */94  e.flags = EP_FullSize; /* Force full-size path */95 96  int rc = test_dupedExprStructSize(&e, EXPRDUP_REDUCE);97  TEST_ASSERT_EQUAL_INT(EXPR_FULLSIZE, rc);98}99 100int main(void){101  UNITY_BEGIN();102  RUN_TEST(test_dupedExprStructSize_flags_zero_returns_fullsize);103  RUN_TEST(test_dupedExprStructSize_reduce_with_left_child_returns_reduced);104  RUN_TEST(test_dupedExprStructSize_reduce_with_pList_returns_reduced);105  RUN_TEST(test_dupedExprStructSize_reduce_leaf_returns_tokenonly);106  RUN_TEST(test_dupedExprStructSize_ep_fullsize_forces_fullsize);107  return UNITY_END();108}