Add integration tests

tests/CMakeLists.txt

@@ -13,6 +13,7 @@ add_test_suites(
   env_tests.c
   eval_tests.c
   expr_tests.c
+  integration_tests.c
   parse_tests.c
   prim_tests.c
   print_tests.c

tests/integration_tests.c

@@ -0,0 +1,48 @@
+#include "eval.h"
+#include "memory_stream.h"
+#include "print.h"
+#include "read.h"
+#include "unity.h"
+
+#include <string.h>
+
+#define BUFFER_SIZE 256U
+
+static am_t am;
+static char buffer[BUFFER_SIZE];
+
+static const char *read_eval_print(const char *input)
+{
+	memory_stream_t stream;
+	memory_stream_init(&stream, (const uint8_t *)input, strlen(input));
+	read(&am, (stream_t *)&stream);
+
+	eval(&am);
+
+	memset(buffer, 0, sizeof(buffer));
+	print(&am, buffer, BUFFER_SIZE - 1);
+	return buffer;
+}
+
+void setUp(void)
+{
+	am_init(&am);
+}
+
+void tearDown(void)
+{
+}
+
+static void test_unnested_arithmetic(void)
+{
+	TEST_ASSERT_EQUAL_STRING("10", read_eval_print("(+ 1 2 3 4)"));
+	TEST_ASSERT_EQUAL_STRING("42", read_eval_print("(* 2 21)"));
+	TEST_ASSERT_EQUAL_STRING("64", read_eval_print("(- 100 36)"));
+}
+
+int main(void)
+{
+	UNITY_BEGIN();
+	RUN_TEST(test_unnested_arithmetic);
+	return UNITY_END();
+}