assembler: Add automated tests

- Include expected output files generated from textbook's assembler
- Fix path issue that caused output files to always appear under
  working directory
- Log source and output paths

projects/06/assembler/CMakeLists.txt

@@ -13,3 +13,50 @@ install(
   TARGETS assembler
   DESTINATION ${CMAKE_SOURCE_DIR}/projects/bin
 )
+
+set(
+  test_programs
+  ../add/Add.asm
+  ../max/Max.asm
+  ../max/MaxL.asm
+  ../pong/Pong.asm
+  ../pong/PongL.asm
+  ../rect/Rect.asm
+  ../rect/RectL.asm
+)
+
+if(WIN32)
+  set(TextComparer "${CMAKE_SOURCE_DIR}/tools/TextComparer.bat")
+else()
+  set(TextComparer "${CMAKE_SOURCE_DIR}/tools/TextComparer.sh")
+endif()
+
+foreach(program ${test_programs})
+  message(STATUS "Adding test assembly program: " ${program})
+  file(
+    COPY ${program}
+    DESTINATION test_programs/
+  )
+
+  cmake_path(GET program STEM program_stem)
+  add_test(
+    NAME "Assemble: ${program}"
+    COMMAND assembler "test_programs/${program_stem}.asm"
+  )
+  add_test(
+    NAME "Comparison: ${program}"
+    COMMAND "${TextComparer}" "test_programs/${program_stem}.hack" "${CMAKE_CURRENT_SOURCE_DIR}/../expected/${program_stem}.hack"
+  )
+
+  set_tests_properties(
+    "Assemble: ${program}"
+    PROPERTIES
+      FIXTURES_SETUP "${program}"
+  )
+  set_tests_properties(
+    "Comparison: ${program}"
+    PROPERTIES
+      FIXTURES_REQUIRED "${program}"
+      PASS_REGULAR_EXPRESSION "Comparison ended successfully"
+  )
+endforeach()

projects/06/assembler/main.cpp

@@ -144,9 +144,10 @@ bool IsNumber(std::string_view str) {
 }
 
 int main(int argc, char *argv[]) {
-  CHECK_GE(argc, 2) << "No input file";
+  QCHECK_GE(argc, 2) << "Usage: " << argv[0] << " SOURCE";
   std::ifstream asm_file(argv[1]);
-  CHECK(asm_file.is_open()) << "Failed to open input file '" << argv[1] << "'";
+  QCHECK(asm_file.is_open()) << "Failed to open input file '" << argv[1] << "'";
+  LOG(INFO) << "Source: " << argv[1];
 
   std::string buffer;
   std::vector<std::string> trimmed_lines;
@@ -182,11 +183,12 @@ int main(int argc, char *argv[]) {
     }
   }
 
-  std::string hack_filename = std::filesystem::path(argv[1]).stem().string();
-  absl::StrAppend(&hack_filename, ".hack");
-  std::ofstream hack_file(hack_filename);
+  std::filesystem::path hack_path(argv[1]);
+  hack_path.replace_extension(".hack");
+  std::ofstream hack_file(hack_path);
   CHECK(hack_file.is_open())
-      << "Failed to open output file '" << hack_filename << "'";
+      << "Failed to open output file " << hack_path.string();
+  LOG(INFO) << "Output: " << hack_path.string();
 
   uint16_t variable_address = 16;
   for (const std::string &line : trimmed_lines) {

projects/06/expected/Add.hack

@@ -0,0 +1,6 @@
+0000000000000010
+1110110000010000
+0000000000000011
+1110000010010000
+0000000000000000
+1110001100001000

projects/06/expected/Max.hack

@@ -0,0 +1,16 @@
+0000000000000000
+1111110000010000
+0000000000000001
+1111010011010000
+0000000000001010
+1110001100000001
+0000000000000001
+1111110000010000
+0000000000001100
+1110101010000111
+0000000000000000
+1111110000010000
+0000000000000010
+1110001100001000
+0000000000001110
+1110101010000111

projects/06/expected/MaxL.hack

@@ -0,0 +1,16 @@
+0000000000000000
+1111110000010000
+0000000000000001
+1111010011010000
+0000000000001010
+1110001100000001
+0000000000000001
+1111110000010000
+0000000000001100
+1110101010000111
+0000000000000000
+1111110000010000
+0000000000000010
+1110001100001000
+0000000000001110
+1110101010000111