From 78967f3ef62438e9a3abaaa69704338e3b01757b Mon Sep 17 00:00:00 2001
From: "Gu://em_" <guillem.george@epita.fr>
Date: Thu, 8 Jan 2026 16:59:37 +0100
Subject: [PATCH] test: iob_init and iob_close tests (+ small typo fix in src)

---
 src/io_backend/io_backend.c        |   2 +-
 src/io_backend/io_backend.h        |   2 +-
 tests/unit/io_backend/io_backend.c | 122 +++++++++++++++++++++++++++++
 3 files changed, 124 insertions(+), 2 deletions(-)
 create mode 100644 tests/unit/io_backend/io_backend.c

diff --git a/src/io_backend/io_backend.c b/src/io_backend/io_backend.c
index 7e7c1c3..97fe974 100644
--- a/src/io_backend/io_backend.c
+++ b/src/io_backend/io_backend.c
@@ -17,7 +17,7 @@ static enum iob_state state = IOB_STATE_NOT_INITIALIZED;
 int iob_init(struct iob_context *ctx)
 {
     if (state != IOB_STATE_NOT_INITIALIZED)
-        return IOB_ERROR_MODULE_NOT_INITIALIZED;
+        return IOB_ERROR_MODULE_ALREADY_INITIALIZED;
 
     context = *ctx;
 
diff --git a/src/io_backend/io_backend.h b/src/io_backend/io_backend.h
index c2079f0..cd5ec8a 100644
--- a/src/io_backend/io_backend.h
+++ b/src/io_backend/io_backend.h
@@ -7,7 +7,7 @@
 #define IOB_ERROR_GENERIC -1
 #define IOB_ERROR_BAD_ARG -2
 #define IOB_ERROR_MODULE_NOT_INITIALIZED -3
-#define IOB_ERROR_MODULE_ALREADY_INITALIZED -4
+#define IOB_ERROR_MODULE_ALREADY_INITIALIZED -4
 #define IOB_ERROR_CANNOT_OPEN_FILE -5
 
 enum iob_mode {
diff --git a/tests/unit/io_backend/io_backend.c b/tests/unit/io_backend/io_backend.c
new file mode 100644
index 0000000..8640cdb
--- /dev/null
+++ b/tests/unit/io_backend/io_backend.c
@@ -0,0 +1,122 @@
+#include <criterion/criterion.h>
+#include <criterion/new/assert.h>
+
+#include <io_backend/io_backend.h>
+
+#include <stdio.h>
+
+TestSuite(IO_Backend);
+
+// IOB Init
+
+Test(IO_Backend, init_null)
+{
+    struct iob_context ctx = {
+        .iob_mode = IOB_MODE_NULL;
+        .args = NULL;
+    };
+    int actual = iob_init(ctx);
+    int expected = IOB_ERROR_BAD_ARG;
+    cr_expect(actual == expected, "Expected: %d. Got: %d", expected, actual);
+}
+
+Test(IO_Backend, init_stdin)
+{
+    struct iob_context ctx = {
+        .iob_mode = IOB_MODE_STDIN;
+        .args = NULL;
+    };
+    int actual = iob_init(ctx);
+    int expected = 0;
+    cr_expect(actual == expected, "Expected: %d. Got: %d", expected, actual);
+    iob_close();
+}
+
+// WARNING: this one could fail because of iob_close in the previous test
+// Same applies for other tests
+Test(IO_Backend, init_script)
+{
+    char* script_name = "script.tmp"
+    struct iob_context ctx = {
+        .iob_mode = IOB_MODE_SCRIPT;
+        .args = script_name;
+    };
+    // Create file
+    FILE* f = fopen(script_name, "w");
+    fclose(f);
+
+    int actual = iob_init(ctx);
+    int expected = 0;
+    cr_expect(actual == expected, "Expected: %d. Got: %d", expected, actual);
+    iob_close();
+    remove(script_name);
+}
+
+Test(IO_Backend, init_script_not_a_file)
+{
+    char* script_name = "not_a_file.tmp"
+    struct iob_context ctx = {
+        .iob_mode = IOB_MODE_SCRIPT;
+        .args = script_name;
+    };
+    int actual = iob_init(ctx);
+    int expected = IOB_ERROR_CANNOT_OPEN_FILE;
+    cr_expect(actual == expected, "Expected: %d. Got: %d", expected, actual);
+}
+
+Test(IO_Backend, init_script_null)
+{
+    struct iob_context ctx = {
+        .iob_mode = IOB_MODE_SCRIPT;
+        .args = NULL;
+    };
+    int actual = iob_init(ctx);
+    int expected = IOB_ERROR_CANNOT_OPEN_FILE;
+    cr_expect(actual == expected, "Expected: %d. Got: %d", expected, actual);
+}
+
+Test(IO_Backend, init_cmd)
+{
+    char* cmd = "iamacommand --yesido"
+    struct iob_context ctx = {
+        .iob_mode = IOB_MODE_CMD;
+        .args = cmd;
+    };
+    int actual = iob_init(ctx);
+    int expected = 0;
+    cr_expect(actual == expected, "Expected: %d. Got: %d", expected, actual);
+    iob_close();
+}
+
+Test(IO_Backend, init_cmd_null)
+{
+    struct iob_context ctx = {
+        .iob_mode = IOB_MODE_CMD;
+        .args = NULL;
+    };
+    int actual = iob_init(ctx);
+    int expected = IOB_ERROR_BAD_ARG;
+    cr_expect(actual == expected, "Expected: %d. Got: %d", expected, actual);
+}
+
+Test(IO_Backend, init_already_init)
+{
+    char* cmd = "iamacommand --yesido"
+    struct iob_context ctx = {
+        .iob_mode = IOB_MODE_CMD;
+        .args = cmd;
+    };
+    iob_init(ctx);
+    int actual = iob_init(ctx);
+    int expected = IOB_ERROR_ALREADY_INITIALIZED;
+    cr_expect(actual == expected, "Expected: %d. Got: %d", expected, actual);
+    iob_close();
+}
+
+Test(IO_Backend, close_not_init)
+{
+    iob_close(); // Shouldn't do anything
+}
+
+// IOB Stream
+// TODO