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Added basic unit test for llvm-cov.
This test compares the output of llvm-cov against a coverage file generated by gcov. Since the source file must be in the current directory when reading GCNO files, the test will first cd into the Inputs directory. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194451 91177308-0d34-0410-b5e6-96231b3b80d8
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7
test/tools/llvm-cov/Inputs/README
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7
test/tools/llvm-cov/Inputs/README
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These inputs were pre-generated to allow for easier testing of llvm-cov.
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test.gcno and test.gcda were create by running the latest version of clang:
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clang++ -g -ftest-coverage -fprofile-arcs test.cpp
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test.cpp.gcov was created by running gcov 4.2.1:
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gcov test.cpp
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77
test/tools/llvm-cov/Inputs/test.cpp
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test/tools/llvm-cov/Inputs/test.cpp
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#include <cstdlib>
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bool on = false;
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int len = 42;
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double grid[10][10] = {0};
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const char * hello = "world";
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const char * world = "hello";
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struct A {
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virtual void B();
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};
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void A::B() {}
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void useless() {}
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double more_useless() {
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return 0;
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}
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int foo() {
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on = true;
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return 3;
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}
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int bar() {
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len--;
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return foo() + 45;
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}
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void assign(int ii, int jj) {
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grid[ii][jj] = (ii+1) * (jj+1);
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}
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void initialize_grid() {
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for (int ii = 0; ii < 2; ii++)
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for (int jj = 0; jj < 2; jj++)
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assign(ii, jj);
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}
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int main() {
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initialize_grid();
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int a = 2;
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on = rand() % 2;
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if (on) {
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foo();
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++a;
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} else {
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bar();
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a += rand();
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}
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for (int ii = 0; ii < 10; ++ii) {
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switch (rand() % 5) {
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case 0:
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a += rand();
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break;
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case 1:
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case 2:
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a += rand() / rand();
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break;
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case 3:
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a -= rand();
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break;
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default:
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a = -1;
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}
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}
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A thing;
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for (uint64_t ii = 0; ii < 4294967296; ++ii)
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thing.B();
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return a + 8 + grid[2][3] + len;
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return more_useless();
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}
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82
test/tools/llvm-cov/Inputs/test.cpp.gcov
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82
test/tools/llvm-cov/Inputs/test.cpp.gcov
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-: 0:Source:test.cpp
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-: 0:Graph:test.gcno
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-: 0:Data:test.gcda
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-: 0:Runs:2
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-: 0:Programs:1
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-: 1:#include <cstdlib>
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-: 2:
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-: 3:bool on = false;
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-: 4:int len = 42;
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-: 5:double grid[10][10] = {0};
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-: 6:const char * hello = "world";
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-: 7:const char * world = "hello";
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-: 8:
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4: 9:struct A {
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-: 10: virtual void B();
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-: 11:};
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-: 12:
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8589934592: 13:void A::B() {}
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-: 14:
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#####: 15:void useless() {}
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-: 16:
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-: 17:double more_useless() {
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#####: 18: return 0;
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-: 19:}
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-: 20:
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-: 21:int foo() {
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2: 22: on = true;
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2: 23: return 3;
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-: 24:}
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-: 25:
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-: 26:int bar() {
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#####: 27: len--;
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#####: 28: return foo() + 45;
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-: 29:}
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-: 30:
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8: 31:void assign(int ii, int jj) {
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8: 32: grid[ii][jj] = (ii+1) * (jj+1);
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8: 33:}
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-: 34:
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-: 35:void initialize_grid() {
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12: 36: for (int ii = 0; ii < 2; ii++)
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24: 37: for (int jj = 0; jj < 2; jj++)
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12: 38: assign(ii, jj);
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2: 39:}
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-: 40:
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-: 41:int main() {
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2: 42: initialize_grid();
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-: 43:
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2: 44: int a = 2;
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2: 45: on = rand() % 2;
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2: 46: if (on) {
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2: 47: foo();
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2: 48: ++a;
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2: 49: } else {
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#####: 50: bar();
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#####: 51: a += rand();
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-: 52: }
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-: 53:
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44: 54: for (int ii = 0; ii < 10; ++ii) {
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20: 55: switch (rand() % 5) {
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-: 56: case 0:
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4: 57: a += rand();
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4: 58: break;
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-: 59: case 1:
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-: 60: case 2:
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2: 61: a += rand() / rand();
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2: 62: break;
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-: 63: case 3:
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6: 64: a -= rand();
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6: 65: break;
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-: 66: default:
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8: 67: a = -1;
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8: 68: }
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20: 69: }
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-: 70:
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2: 71: A thing;
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17179869188: 72: for (uint64_t ii = 0; ii < 4294967296; ++ii)
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8589934592: 73: thing.B();
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-: 74:
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2: 75: return a + 8 + grid[2][3] + len;
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-: 76: return more_useless();
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-: 77:}
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BIN
test/tools/llvm-cov/Inputs/test.gcda
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BIN
test/tools/llvm-cov/Inputs/test.gcda
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Binary file not shown.
BIN
test/tools/llvm-cov/Inputs/test.gcno
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BIN
test/tools/llvm-cov/Inputs/test.gcno
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Binary file not shown.
1
test/tools/llvm-cov/lit.local.cfg
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1
test/tools/llvm-cov/lit.local.cfg
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config.suffixes = ['.test']
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2
test/tools/llvm-cov/llvm-cov.test
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2
test/tools/llvm-cov/llvm-cov.test
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RUN: cd %p/Inputs && llvm-cov -gcno=test.gcno -gcda=test.gcda \
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RUN: | diff test.cpp.gcov -
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