Add test for invalid CSE key

src/test/kotlin/net/thauvin/erik/mobibot/modules/Gemini2Test.kt

@@ -47,11 +47,16 @@ class Gemini2Test : LocalProperties() {
     @DisplayName("Chat Tests")
     inner class ChatTests {
         private val apiKey = getProperty(Gemini2.GEMINI_API_KEY)
-        private val maxTokens = getProperty(Gemini2.MAX_TOKENS_PROP).toInt()
 
         @Test
         @DisableOnCi
         fun chatHttpRequestInJavascript() {
+            val maxTokens = try {
+                getProperty(Gemini2.MAX_TOKENS_PROP).toInt()
+            } catch (_: NumberFormatException) {
+                1024
+            }
+
             assertThat(
                 Gemini2.chat(
                     "javascript function to make a request with XMLHttpRequest, just code",

src/test/kotlin/net/thauvin/erik/mobibot/modules/GoogleSearchTest.kt

@@ -113,21 +113,30 @@ class GoogleSearchTest : LocalProperties() {
         @Test
         fun `API key should not be empty`() {
             assertFailure { sanitizedSearch("test", "", "apiKey") }
-                .isInstanceOf(ModuleException::class.java).hasNoCause()
+                .isInstanceOf(ModuleException::class.java)
+                .hasMessage("${GoogleSearch.SERVICE_NAME} is disabled. The API keys are missing.")
         }
 
         @Test
-        fun `CSE key should not empty`() {
+        fun `CSE key should not be empty`() {
             assertFailure { sanitizedSearch("test", "apiKey", "") }
-                .isInstanceOf(ModuleException::class.java).hasNoCause()
+                .isInstanceOf(ModuleException::class.java)
+                .hasMessage("${GoogleSearch.SERVICE_NAME} is disabled. The API keys are missing.")
         }
 
         @Test
         fun `Invalid API key should throw exception`() {
-            assertFailure { sanitizedSearch("test", "apiKey", "cssKey") }
+            assertFailure { sanitizedSearch("test", "apiKey", "cseKey") }
                 .isInstanceOf(ModuleException::class.java)
                 .hasMessage("API key not valid. Please pass a valid API key.")
         }
+
+        @Test
+        fun `Invalid CSE key should throw exception`() {
+            assertFailure { sanitizedSearch("test", apiKey, "cseKey") }
+                .isInstanceOf(ModuleException::class.java)
+                .hasMessage("Request contains an invalid argument.")
+        }
     }
 
     @Nested