133 lines
3.5 KiB
C++
133 lines
3.5 KiB
C++
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// This sample shows how to write a simple unit test for a function,
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// using Google C++ testing framework.
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//
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// Writing a unit test using Google C++ testing framework is easy as 1-2-3:
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// Step 1. Include necessary header files such that the stuff your
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// test logic needs is declared.
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//
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// Don't forget gtest.h, which declares the testing framework.
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#include "CProtocolUtil.h"
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//#include "IStream.h"
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//#include "CLog.h"
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//#include "stdvector.h"
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//#include <cctype>
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//#include <cstring>
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#include <gtest/gtest.h>
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// Step 2. Use the TEST macro to define your tests.
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//
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// TEST has two parameters: the test case name and the test name.
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// After using the macro, you should define your test logic between a
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// pair of braces. You can use a bunch of macros to indicate the
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// success or failure of a test. EXPECT_TRUE and EXPECT_EQ are
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// examples of such macros. For a complete list, see gtest.h.
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//
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// <TechnicalDetails>
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//
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// In Google Test, tests are grouped into test cases. This is how we
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// keep test code organized. You should put logically related tests
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// into the same test case.
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//
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// The test case name and the test name should both be valid C++
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// identifiers. And you should not use underscore (_) in the names.
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//
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// Google Test guarantees that each test you define is run exactly
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// once, but it makes no guarantee on the order the tests are
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// executed. Therefore, you should write your tests in such a way
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// that their results don't depend on their order.
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//
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// </TechnicalDetails>
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TEST(ProtocolUntilTest, HelloWorld) {
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EXPECT_EQ(1, 1);
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}
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/*
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// Tests Factorial().
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// Tests factorial of negative numbers.
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TEST(FactorialTest, Negative) {
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// This test is named "Negative", and belongs to the "FactorialTest"
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// test case.
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EXPECT_EQ(1, Factorial(-5));
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EXPECT_EQ(1, Factorial(-1));
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EXPECT_TRUE(Factorial(-10) > 0);
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// <TechnicalDetails>
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//
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// EXPECT_EQ(expected, actual) is the same as
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//
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// EXPECT_TRUE((expected) == (actual))
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//
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// except that it will print both the expected value and the actual
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// value when the assertion fails. This is very helpful for
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// debugging. Therefore in this case EXPECT_EQ is preferred.
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//
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// On the other hand, EXPECT_TRUE accepts any Boolean expression,
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// and is thus more general.
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//
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// </TechnicalDetails>
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}
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// Tests factorial of 0.
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TEST(FactorialTest, Zero) {
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EXPECT_EQ(1, Factorial(0));
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}
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// Tests factorial of positive numbers.
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TEST(FactorialTest, Positive) {
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EXPECT_EQ(1, Factorial(1));
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EXPECT_EQ(2, Factorial(2));
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EXPECT_EQ(6, Factorial(3));
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EXPECT_EQ(40320, Factorial(8));
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}
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// Tests IsPrime()
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// Tests negative input.
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TEST(IsPrimeTest, Negative) {
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// This test belongs to the IsPrimeTest test case.
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EXPECT_FALSE(IsPrime(-1));
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EXPECT_FALSE(IsPrime(-2));
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EXPECT_FALSE(IsPrime(INT_MIN));
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}
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// Tests some trivial cases.
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TEST(IsPrimeTest, Trivial) {
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EXPECT_FALSE(IsPrime(0));
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EXPECT_FALSE(IsPrime(1));
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EXPECT_TRUE(IsPrime(2));
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EXPECT_TRUE(IsPrime(3));
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}
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// Tests positive input.
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TEST(IsPrimeTest, Positive) {
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EXPECT_FALSE(IsPrime(4));
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EXPECT_TRUE(IsPrime(5));
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EXPECT_FALSE(IsPrime(6));
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EXPECT_TRUE(IsPrime(23));
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}
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// Step 3. Call RUN_ALL_TESTS() in main().
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//
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// We do this by linking in src/gtest_main.cc file, which consists of
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// a main() function which calls RUN_ALL_TESTS() for us.
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//
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// This runs all the tests you've defined, prints the result, and
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// returns 0 if successful, or 1 otherwise.
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//
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// Did you notice that we didn't register the tests? The
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// RUN_ALL_TESTS() macro magically knows about all the tests we
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// defined. Isn't this convenient?
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*/
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