From c3828dd35789dedb6294d477b9d3739aabe3debe Mon Sep 17 00:00:00 2001
From: apio <blobs.trading@gmail.com>
Date: Sat, 22 Oct 2022 17:58:54 +0200
Subject: [PATCH] Tests: add tests for strchr() and strrchr()

---
 tests/libc/Test.c   |  4 ++++
 tests/libc/string.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)

diff --git a/tests/libc/Test.c b/tests/libc/Test.c
index 8b808383..df274377 100644
--- a/tests/libc/Test.c
+++ b/tests/libc/Test.c
@@ -4,6 +4,8 @@ DEFINE_TEST(strlen);
 DEFINE_TEST(strnlen);
 DEFINE_TEST(strcspn);
 DEFINE_TEST(strspn);
+DEFINE_TEST(strchr);
+DEFINE_TEST(strrchr);
 
 DEFINE_TEST(atoi);
 DEFINE_TEST(atol);
@@ -17,6 +19,8 @@ int main()
     RUN_TEST(strnlen);
     RUN_TEST(strcspn);
     RUN_TEST(strspn);
+    RUN_TEST(strchr);
+    RUN_TEST(strrchr);
 
     START_TEST_CASE(stdlib.h);
     RUN_TEST(atoi);
diff --git a/tests/libc/string.c b/tests/libc/string.c
index d3c75626..b6e52258 100644
--- a/tests/libc/string.c
+++ b/tests/libc/string.c
@@ -83,5 +83,47 @@ DEFINE_TEST(strspn)
 
     EXPECT_EQ(len, 10);
 
+    TEST_SUCCESS();
+}
+
+DEFINE_TEST(strchr)
+{
+    START_TEST(strchr);
+
+    const char* str = "Hello, world!";
+
+    char* ptr = strchr(str, 'l');
+
+    EXPECT_EQ(ptr, str + 2);
+
+    ptr = strchr(str, 'u');
+
+    EXPECT_EQ(ptr, NULL);
+
+    ptr = strchr(str, '!');
+
+    EXPECT_EQ(ptr, str + 12);
+
+    TEST_SUCCESS();
+}
+
+DEFINE_TEST(strrchr)
+{
+    START_TEST(strrchr);
+
+    const char* str = "Hello, world!";
+
+    char* ptr = strrchr(str, 'l');
+
+    EXPECT_EQ(ptr, str + 10);
+
+    ptr = strrchr(str, 'u');
+
+    EXPECT_EQ(ptr, NULL);
+
+    ptr = strrchr(str, '!');
+
+    EXPECT_EQ(ptr, str + 12);
+
     TEST_SUCCESS();
 }
\ No newline at end of file