From 0468c7cb1d32c5479c2537911ab04290f92079dc Mon Sep 17 00:00:00 2001
From: FrancoisCarouge <francois.carouge@gmail.com>
Date: Mon, 7 Oct 2024 18:35:31 -0700
Subject: [PATCH] [linalg] lazy linalg tests

---
 linalg/CMakeLists.txt                         |  1 +
 support/CMakeLists.txt                        | 30 ++++++++
 test/CMakeLists.txt                           | 16 ++++-
 ...onstructor_initializer_lists_deduction.cpp | 71 +++++++++++++++++++
 4 files changed, 117 insertions(+), 1 deletion(-)
 create mode 100644 test/linalg_constructor_initializer_lists_deduction.cpp

diff --git a/linalg/CMakeLists.txt b/linalg/CMakeLists.txt
index d5f6457d4..dcb8aef75 100644
--- a/linalg/CMakeLists.txt
+++ b/linalg/CMakeLists.txt
@@ -37,4 +37,5 @@ OTHER DEALINGS IN THE SOFTWARE.
 For more information, please refer to <https://unlicense.org> ]]
 
 add_subdirectory("eigen")
+add_subdirectory("lazy")
 add_subdirectory("naive")
diff --git a/support/CMakeLists.txt b/support/CMakeLists.txt
index 69fc1e702..9824cf006 100644
--- a/support/CMakeLists.txt
+++ b/support/CMakeLists.txt
@@ -115,3 +115,33 @@ install(
   EXPORT "kalman-target"
   FILE_SET "kalman_print_headers"
   DESTINATION "include/fcarouge")
+
+include(CheckSourceCompiles)
+include(FetchContent)
+
+add_library(kalman_generator INTERFACE)
+
+check_source_compiles(
+  CXX
+  "
+  #include <generator>
+  int main() {}
+  "
+  CPP_LIB_GENERATOR)
+
+if(NOT CPP_LIB_GENERATOR)
+  FetchContent_Declare(
+    stdgenerator
+    GIT_REPOSITORY "https://github.com/FrancoisCarouge/generator"
+    FIND_PACKAGE_ARGS NAMES stdgenerator)
+  FetchContent_MakeAvailable(stdgenerator)
+
+  target_sources(kalman_generator INTERFACE FILE_SET "kalman_generator_headers"
+                                            TYPE "HEADERS" FILES "generator")
+  target_link_libraries(kalman_generator INTERFACE stdgenerator::stdgenerator)
+  install(
+    TARGETS kalman_generator
+    EXPORT "kalman-target"
+    FILE_SET "kalman_generator_headers"
+    DESTINATION "include/fcarouge")
+endif()
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 3e94c4dea..9e7098dae 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -54,7 +54,7 @@ foreach(
            COMMAND ${TEST_COMMAND} $<TARGET_FILE:kalman_test_${NAME}_driver>)
 endforeach()
 
-foreach(BACKEND IN ITEMS "eigen" "naive")
+foreach(BACKEND IN ITEMS "eigen" "lazy" "naive")
   foreach(
     TEST
     "linalg_addition.cpp"
@@ -114,3 +114,17 @@ foreach(BACKEND IN ITEMS "eigen")
                      $<TARGET_FILE:kalman_test_${BACKEND}_${NAME}_driver>)
   endforeach()
 endforeach()
+
+foreach(BACKEND IN ITEMS "lazy")
+  foreach(TEST "linalg_constructor_initializer_lists_deduction.cpp")
+    get_filename_component(NAME ${TEST} NAME_WE)
+    add_executable(kalman_test_${BACKEND}_${NAME}_driver ${TEST})
+    target_link_libraries(
+      kalman_test_${BACKEND}_${NAME}_driver
+      PRIVATE kalman kalman_main kalman_linalg_${BACKEND} kalman_options)
+    separate_arguments(TEST_COMMAND UNIX_COMMAND $ENV{COMMAND})
+    add_test(NAME kalman_test_${BACKEND}_${NAME}
+             COMMAND ${TEST_COMMAND}
+                     $<TARGET_FILE:kalman_test_${BACKEND}_${NAME}_driver>)
+  endforeach()
+endforeach()
diff --git a/test/linalg_constructor_initializer_lists_deduction.cpp b/test/linalg_constructor_initializer_lists_deduction.cpp
new file mode 100644
index 000000000..3ece94f2e
--- /dev/null
+++ b/test/linalg_constructor_initializer_lists_deduction.cpp
@@ -0,0 +1,71 @@
+/*  __          _      __  __          _   _
+| |/ /    /\   | |    |  \/  |   /\   | \ | |
+| ' /    /  \  | |    | \  / |  /  \  |  \| |
+|  <    / /\ \ | |    | |\/| | / /\ \ | . ` |
+| . \  / ____ \| |____| |  | |/ ____ \| |\  |
+|_|\_\/_/    \_\______|_|  |_/_/    \_\_| \_|
+
+Kalman Filter
+Version 0.4.0
+https://github.com/FrancoisCarouge/Kalman
+
+SPDX-License-Identifier: Unlicense
+
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <https://unlicense.org> */
+
+#include "fcarouge/linalg.hpp"
+
+#include <cassert>
+
+#include <iostream>
+#include <typeinfo>
+
+namespace fcarouge::test {
+namespace {
+//! @test Verifies the initializer lists constructor.
+//!
+//! @todo Rewrite this test as a property-based test.
+//! @todo Static assert the sizes and value type?
+[[maybe_unused]] auto test{[] {
+  matrix m{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}, {1, 2, 3}};
+
+  assert(m(0, 0) == 1);
+  assert(m(0, 1) == 2);
+  assert(m(0, 2) == 3);
+  assert(m(1, 0) == 4);
+  assert(m(1, 1) == 5);
+  assert(m(1, 2) == 6);
+  assert(m(2, 0) == 7);
+  assert(m(2, 1) == 8);
+  assert(m(2, 2) == 9);
+  assert(m(3, 0) == 1);
+  assert(m(3, 1) == 2);
+  assert(m(3, 2) == 3);
+
+  return 0;
+}()};
+} // namespace
+} // namespace fcarouge::test