Adding testing to lab 5

.gitignore

@@ -1,7 +1,10 @@
 .DS_Store
-*.out
-scanner.c
+lab-4/token.h
 *.o
+*.out
+*.output
 parser.c
 parser.h
-parser.output
+scanner.c
+test_print.txt
+test_evaluate.txt

.gitlab-ci.yml

@@ -25,3 +25,15 @@ lab_4_tests:
     - echo "Lab 4 - Bison Parser"
     - make test
     - ./parser_test.out
+
+lab_5_tests:
+  stage: test
+  image: gitlab.cs.wallawalla.edu:5050/cs_department/docker-images/cpp
+  script:
+    - apt update
+    - apt install -y flex bison
+    - bison --version
+    - cd lab-5
+    - echo "Lab 5 - Interpreter"
+    - make test
+    - ./interpreter_test.out

lab-5/Makefile

@@ -1,9 +1,12 @@
 
-# The top level rule indicates how to link everything together into calc
+# The top level rule indicates how to link everything together into main
 
 main: main.o symbol_map.o expr.o scanner.o parser.o
 	gcc main.o symbol_map.o expr.o scanner.o parser.o -o interpreter.out -lm
 
+test: main_test.o symbol_map.o expr.o scanner.o parser.o
+	gcc main_test.o symbol_map.o expr.o scanner.o parser.o -o interpreter_test.out -lm
+
 # This pattern indicates that any .o file depends
 # upon the .c file of the same name, and all of the .h files.
 # So, if a .o file is needed, it is built automatically.
@@ -22,5 +25,5 @@ parser.c parser.h: parser.bison
 # clean causes all intermediate files to be deleted.
 
 clean:
-	rm -f parser.c parser.output parser.h scanner.c *.o interpreter.out
+	rm -f parser.c parser.output parser.h scanner.c *.o interpreter.out interpreter_test.out test_evaluate.txt test_print.txt
 

lab-5/main_test.c

@@ -0,0 +1,161 @@
+// https://github.com/sheredom/utest.h/blob/master/utest.h
+#include "utest.h"
+#include "expr.h"
+#include <stdio.h>
+
+/* Clunky: Declare the parse function generated from parser.bison */
+extern int yyparse();
+
+/* Clunky: Declare the result of the parser from parser.bison */
+extern struct stmt *parser_result;
+
+typedef struct yy_buffer_state *YY_BUFFER_STATE;
+extern int yyrestart();
+extern YY_BUFFER_STATE yy_scan_buffer(char *str, int i);
+extern YY_BUFFER_STATE yy_scan_string(char *str);
+extern void yy_delete_buffer(YY_BUFFER_STATE buffer);
+extern FILE *yyin;
+extern int yylineno;
+
+UTEST_MAIN();
+
+void read_file(const char *filename, char *expected_output) {
+  // Read the expected output from a file
+  FILE *expected_file = fopen(filename, "r");
+  if (expected_file == NULL) {
+    perror("fopen");
+    exit(EXIT_FAILURE);
+  }
+  size_t n =
+      fread(expected_output, 1, sizeof(expected_output) - 1, expected_file);
+  expected_output[n] = '\0';
+  fclose(expected_file);
+}
+
+void redirect_stdout(const char *filename, int evalutate) {
+  // Redirect stdout to a temporary file
+  FILE *temp_file = fopen(filename, "w");
+  if (temp_file == NULL) {
+    perror("tmpfile");
+    exit(EXIT_FAILURE);
+  }
+  int temp_fd = fileno(temp_file);
+  int stdout_fd = dup(STDOUT_FILENO);
+  dup2(temp_fd, STDOUT_FILENO);
+
+  // Perform operations that generate output
+  if (evalutate != 0) {
+    stmt_evaluate(parser_result);
+  } else {
+    stmt_print(parser_result);
+  }
+
+  // Flush and close stdout
+  fflush(stdout);
+  dup2(stdout_fd, STDOUT_FILENO);
+  close(stdout_fd);
+}
+
+UTEST(interpreter, print) {
+
+  yyin = fopen("samples/multiple_statements.c", "r");
+  yyrestart(yyin);
+  ASSERT_TRUE(yyin);
+
+//   yylineno = 1;
+  yylineno = 1;
+  int result = yyparse();
+
+  if (result == 0) {
+    // Catch the standard output and compare with expected test result
+    redirect_stdout("test_print.txt", 0);
+    redirect_stdout("test_evaluate.txt", 1);
+  }
+
+  // Assert the result to test correctness
+  ASSERT_EQ(result, 0);
+
+  char actual_print[1024];
+  read_file("test_print.txt", actual_print);
+  char expected_print[1024];
+  read_file("samples/multiple_statements_print.txt", expected_print);
+  ASSERT_STREQ(actual_print, expected_print);
+
+  char actual_evaluate[1024];
+  read_file("test_evaluate.txt", actual_evaluate);
+  char expected_evaluate[1024];
+  read_file("samples/multiple_statements_evaluate.txt", expected_evaluate);
+  ASSERT_STREQ(actual_evaluate, expected_evaluate);
+}
+
+
+
+UTEST(interpreter, program) {
+  yyin = fopen("samples/program.c", "r");
+  yyrestart(yyin);
+  ASSERT_TRUE(yyin);
+
+  yylineno = 1;
+  int result = yyparse();
+
+  if (result == 0) {
+    // Catch the standard output and compare with expected test result
+    redirect_stdout("test_print.txt", 0);
+    redirect_stdout("test_evaluate.txt", 1);
+  }
+
+  // Assert the result to test correctness
+  ASSERT_EQ(result, 0);
+
+  char actual_print[1024];
+  read_file("test_print.txt", actual_print);
+  char expected_print[1024];
+  read_file("samples/program_print.txt", expected_print);
+  ASSERT_STREQ(actual_print, expected_print);
+
+  char actual_evaluate[1024];
+  read_file("test_evaluate.txt", actual_evaluate);
+  char expected_evaluate[1024];
+  read_file("samples/program_evaluate.txt", expected_evaluate);
+  ASSERT_STREQ(actual_evaluate, expected_evaluate);
+}
+
+// UTEST(parser, missing_new_line) {
+//   // Must include the null character to terminate input
+//   char string[] = "1+8/4-3\0";
+//   YY_BUFFER_STATE buffer = yy_scan_buffer(string, sizeof(string));
+
+//   yylineno = 1;
+//   int result = yyparse();
+
+//   yy_delete_buffer(buffer);
+
+//   // Assert the result to test correctness
+//   ASSERT_EQ(result, 1);
+// }
+
+// UTEST(parser, hello_world) {
+//   // Read sample file as input
+//   yyin = fopen("samples/hello.py", "r");
+//   yyrestart(yyin);
+//   ASSERT_TRUE(yyin);
+
+//   yylineno = 1;
+//   int result = yyparse();
+
+//   // Assert the result to test correctness
+//   ASSERT_EQ(result, 0);
+// }
+
+// UTEST(parser, quadratic) {
+//   // Read sample file as input
+//   yyin = fopen("samples/quadratic.py", "r");
+//   yyrestart(yyin);
+//   ASSERT_TRUE(yyin);
+
+//   yylineno = 1;
+//   int result = yyparse();
+
+//   // Assert the result to test correctness
+//   ASSERT_EQ(result, 0);
+// }

lab-5/samples/multiple_statements_evaluate.txt

@@ -0,0 +1 @@
+56

lab-5/samples/multiple_statements_print.txt

@@ -0,0 +1,2 @@
+print 5;
+print 6;

lab-5/samples/program_evaluate.txt

@@ -0,0 +1 @@
+2024

lab-5/samples/program_print.txt

@@ -0,0 +1,2 @@
+a = ((101*20)+4);
+print(a);