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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <ctest/ctest.h>
#define MAX_TESTS 255
/** Semi-random number used to identify assertion errors. */
#define ASSERTION_ERROR 42
typedef void TestCase();
/** A suite of tests. */
typedef struct {
int size;
const char* testNames[MAX_TESTS];
TestCase* tests[MAX_TESTS];
int currentTest;
FILE* out;
} TestSuite;
/** Gets the test suite. Creates it if necessary. */
static TestSuite* getTestSuite() {
static TestSuite* suite = NULL;
if (suite != NULL) {
return suite;
}
suite = calloc(1, sizeof(TestSuite));
assert(suite != NULL);
suite->out = tmpfile();
assert(suite->out != NULL);
return suite;
}
void addNamedTest(const char* name, TestCase* test) {
TestSuite* testSuite = getTestSuite();
assert(testSuite->size <= MAX_TESTS);
int index = testSuite->size;
testSuite->testNames[index] = name;
testSuite->tests[index] = test;
testSuite->size++;
}
/** Prints failures to stderr. */
static void printFailures(int failures) {
TestSuite* suite = getTestSuite();
fprintf(stderr, "FAILURE! %d of %d tests failed. Failures:\n",
failures, suite->size);
// Copy test output to stdout.
rewind(suite->out);
char buffer[512];
size_t read;
while ((read = fread(buffer, sizeof(char), 512, suite->out)) > 0) {
// TODO: Make sure we actually wrote 'read' bytes.
fwrite(buffer, sizeof(char), read, stderr);
}
}
/** Runs a single test case. */
static int runCurrentTest() {
TestSuite* suite = getTestSuite();
pid_t pid = fork();
if (pid == 0) {
// Child process. Runs test case.
suite->tests[suite->currentTest]();
// Exit successfully.
exit(0);
} else if (pid < 0) {
fprintf(stderr, "Fork failed.");
exit(1);
} else {
// Parent process. Wait for child.
int status;
waitpid(pid, &status, 0);
if (!WIFEXITED(status)) {
return -1;
}
return WEXITSTATUS(status);
}
}
void runTests() {
TestSuite* suite = getTestSuite();
int failures = 0;
for (suite->currentTest = 0; suite->currentTest < suite->size;
suite->currentTest++) {
// Flush stdout before forking.
fflush(stdout);
int result = runCurrentTest();
if (result != 0) {
printf("X");
failures++;
// Handle errors other than assertions.
if (result != ASSERTION_ERROR) {
// TODO: Report file name.
fprintf(suite->out, "Process failed: [%s] status: %d\n",
suite->testNames[suite->currentTest], result);
fflush(suite->out);
}
} else {
printf(".");
}
}
printf("\n");
if (failures > 0) {
printFailures(failures);
} else {
printf("SUCCESS! %d tests ran successfully.\n", suite->size);
}
}
void assertTrueWithSource(int value, const char* file, int line, char* message) {
if (!value) {
TestSuite* suite = getTestSuite();
fprintf(suite->out, "Assertion failed: [%s:%d] %s: %s\n", file, line,
suite->testNames[suite->currentTest], message);
fflush(suite->out);
// Exit the process for this test case.
exit(ASSERTION_ERROR);
}
}
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