composable_kernel/test/ck_tile/utility/print

Print Function Tests

This directory contains unit tests for testing the print functionality of various data structures and coordinate transformations in the composable_kernel library.

Tests Included

test_print_sequence.cpp

Tests the print functionality for sequence<...> containers:

• Simple sequences with multiple elements
• Single element sequences
• Empty sequences
• Longer sequences

test_print_array.cpp

Tests the print functionality for array<T, N> containers:

• Arrays with integer values
• Single element arrays
• Empty arrays (size 0)
• Arrays with floating point values

test_print_tuple.cpp

Tests the print functionality for tuple<...> containers:

• Simple tuples with numbers
• Single element tuples
• Empty tuples
• Mixed type tuples

test_print_coordinate_transform.cpp

Tests the print functionality for coordinate transformation structures:

• pass_through transform
• embed transform
• merge transform
• unmerge transform
• freeze transform

Testing Approach

All tests use Google Test's CaptureStdout() functionality to capture the output from print functions and verify the formatting:

testing::internal::CaptureStdout();
print(object);
std::string output = testing::internal::GetCapturedStdout();
EXPECT_EQ(output, "expected_format");

This approach enables testing of print function output without affecting the console during test execution.

Building and Running

The tests are integrated into the CMake build system. To build and run the print tests:

# Build the specific test
make test_print_sequence

# Run the test
./test_print_sequence

# Or run all print tests using CTest
ctest -R "test_print"

Adding New Tests

To add tests for new data structures:

1. Create a new test file: test_print_<structure_name>.cpp
2. Follow the existing pattern using CaptureStdout()
3. Add the test executable to CMakeLists.txt