diff --git a/tests/local.am b/tests/local.am
index ecf9b35..7e1e3d8 100644
--- a/tests/local.am
+++ b/tests/local.am
@@ -27,6 +27,7 @@ testsuite_SOURCES = \
     %D%/unit/common.c \
     %D%/unit/common.h \
     %D%/unit/eval.c \
+    %D%/unit/jit.c \
     %D%/unit/parse.c \
     $(NULL)
 
@@ -34,6 +35,7 @@ testsuite_SOURCES = \
 testsuite_LDADD = \
     libast.a \
     libeval.a \
+    libjit.a \
     libparse.a \
     $(NULL)
 
diff --git a/tests/unit/jit.c b/tests/unit/jit.c
new file mode 100644
index 0000000..e10a347
--- /dev/null
+++ b/tests/unit/jit.c
@@ -0,0 +1,138 @@
+#include <criterion/criterion.h>
+#include <criterion/redirect.h>
+
+#include "common.h"
+
+#include "ast/ast.h"
+#include "eval/evaluator.h"
+#include "jit/jitter.h"
+#include "parse/parse-jitters.h"
+
+TestSuite(jit, .init = redirect_streams);
+
+#define ERR_STRING "Input '%s' = %d, JIT got %d\n"
+void do_compare(const char *input)
+{
+    write_to_stdin(input);
+    struct ast_node *ast = NULL;
+
+    cr_assert_eq(yyparse(&ast), 0);
+    cr_assert_not_null(ast);
+
+    int eval = evaluate_ast(ast);
+    int jit = jit_eval_ast(ast);
+
+    cr_expect_eq(eval, jit, ERR_STRING, input, eval, jit);
+
+    destroy_ast(ast);
+}
+
+Test(jit, one)
+{
+    do_compare("1");
+}
+
+Test(jit, the_answer)
+{
+    do_compare("42");
+}
+
+Test(jit, int_max)
+{
+    do_compare("2147483647");
+}
+
+Test(jit, int_max_plus_one)
+{
+    do_compare("2147483647 + 1");
+}
+
+Test(jit, whitespace)
+{
+    do_compare("   1   ");
+}
+
+Test(jit, more_whitespace)
+{
+    do_compare("   1   + 2     ");
+}
+
+Test(jit, one_plus_one)
+{
+    do_compare("1+1");
+}
+
+Test(jit, one_minus_one)
+{
+    do_compare("1-1");
+}
+
+Test(jit, additions)
+{
+    do_compare("1+1+1+1+1");
+}
+
+Test(jit, substractions)
+{
+    do_compare("1-1-1-1-1");
+}
+
+Test(jit, multiplication)
+{
+    do_compare("2 * 3");
+}
+
+Test(jit, multiplications)
+{
+    do_compare("1 * 2 * 3 * 4");
+}
+
+Test(jit, division)
+{
+    do_compare("12 / 3");
+}
+
+Test(jit, divisions)
+{
+    do_compare("24 / 4 / 3 / 2");
+}
+
+Test(jit, simple_priority)
+{
+    do_compare("1  + 2 * 3");
+}
+
+Test(jit, more_priorities)
+{
+    do_compare("1 + 6 / 3 + 4 * 6 + 14 / 7");
+}
+
+Test(jit, simple_parenthesis)
+{
+    do_compare("(1 + 2) * 3");
+}
+
+Test(jit, more_parenthesis)
+{
+    do_compare("(1 + 2) * (3 - 4)");
+}
+
+Test(jit, unary_minus)
+{
+    do_compare("-1");
+}
+
+Test(jit, unary_plus)
+{
+    do_compare("+1");
+}
+
+Test(jit, unary_torture)
+{
+    do_compare("--+++--+-+-+-1");
+}
+
+Test(jit, altogether)
+{
+    do_compare("  -   3 + - 4 * 8 / 2 + + 3 -- 2 + ((-1) + 1) * 2 ");
+}