From ff7651875e34a377df943ce2f11e950bf88aed5e Mon Sep 17 00:00:00 2001
From: David Woodhouse <dwmw2@infradead.org>
Date: Sat, 13 Dec 2025 10:19:31 +0900
Subject: [PATCH] Add HMAC-MD5 component tests (#12459)

---
 esphome/components/hmac_md5/__init__.py       |  4 +++
 tests/components/hmac_md5/common.yaml         | 34 +++++++++++++++++++
 .../components/hmac_md5/test.bk72xx-ard.yaml  |  1 +
 tests/components/hmac_md5/test.esp32-idf.yaml |  1 +
 .../components/hmac_md5/test.esp8266-ard.yaml |  1 +
 .../components/hmac_md5/test.rp2040-ard.yaml  |  1 +
 6 files changed, 42 insertions(+)
 create mode 100644 tests/components/hmac_md5/common.yaml
 create mode 100644 tests/components/hmac_md5/test.bk72xx-ard.yaml
 create mode 100644 tests/components/hmac_md5/test.esp32-idf.yaml
 create mode 100644 tests/components/hmac_md5/test.esp8266-ard.yaml
 create mode 100644 tests/components/hmac_md5/test.rp2040-ard.yaml

diff --git a/esphome/components/hmac_md5/__init__.py b/esphome/components/hmac_md5/__init__.py
index fe245c0cf..e37eb9b11 100644
--- a/esphome/components/hmac_md5/__init__.py
+++ b/esphome/components/hmac_md5/__init__.py
@@ -1,2 +1,6 @@
+import esphome.config_validation as cv
+
 AUTO_LOAD = ["md5"]
 CODEOWNERS = ["@dwmw2"]
+
+CONFIG_SCHEMA = cv.Schema({})
diff --git a/tests/components/hmac_md5/common.yaml b/tests/components/hmac_md5/common.yaml
new file mode 100644
index 000000000..ac6d7ecba
--- /dev/null
+++ b/tests/components/hmac_md5/common.yaml
@@ -0,0 +1,34 @@
+esphome:
+  on_boot:
+    - lambda: |-
+        // Test HMAC-MD5 functionality
+        #ifdef USE_MD5
+        using esphome::hmac_md5::HmacMD5;
+        HmacMD5 hmac;
+
+        // Test with key "key" and message "The quick brown fox jumps over the lazy dog"
+        const char* key = "key";
+        const char* message = "The quick brown fox jumps over the lazy dog";
+
+        hmac.init(key, strlen(key));
+        hmac.add(message, strlen(message));
+        hmac.calculate();
+
+        char hex_output[33];
+        hmac.get_hex(hex_output);
+        hex_output[32] = '\0';
+
+        ESP_LOGD("HMAC_MD5", "HMAC-MD5('%s', '%s') = %s", key, message, hex_output);
+
+        // Expected: 80070713463e7749b90c2dc24911e275
+        const char* expected = "80070713463e7749b90c2dc24911e275";
+        if (strcmp(hex_output, expected) == 0) {
+          ESP_LOGI("HMAC_MD5", "Test PASSED");
+        } else {
+          ESP_LOGE("HMAC_MD5", "Test FAILED. Expected %s", expected);
+        }
+        #else
+        ESP_LOGW("HMAC_MD5", "HMAC-MD5 not available on this platform");
+        #endif
+
+hmac_md5:
diff --git a/tests/components/hmac_md5/test.bk72xx-ard.yaml b/tests/components/hmac_md5/test.bk72xx-ard.yaml
new file mode 100644
index 000000000..dade44d14
--- /dev/null
+++ b/tests/components/hmac_md5/test.bk72xx-ard.yaml
@@ -0,0 +1 @@
+<<: !include common.yaml
diff --git a/tests/components/hmac_md5/test.esp32-idf.yaml b/tests/components/hmac_md5/test.esp32-idf.yaml
new file mode 100644
index 000000000..dade44d14
--- /dev/null
+++ b/tests/components/hmac_md5/test.esp32-idf.yaml
@@ -0,0 +1 @@
+<<: !include common.yaml
diff --git a/tests/components/hmac_md5/test.esp8266-ard.yaml b/tests/components/hmac_md5/test.esp8266-ard.yaml
new file mode 100644
index 000000000..dade44d14
--- /dev/null
+++ b/tests/components/hmac_md5/test.esp8266-ard.yaml
@@ -0,0 +1 @@
+<<: !include common.yaml
diff --git a/tests/components/hmac_md5/test.rp2040-ard.yaml b/tests/components/hmac_md5/test.rp2040-ard.yaml
new file mode 100644
index 000000000..dade44d14
--- /dev/null
+++ b/tests/components/hmac_md5/test.rp2040-ard.yaml
@@ -0,0 +1 @@
+<<: !include common.yaml