add gemini_cli test

Author: olimorris

tests/adapters/acp/test_gemini_cli.lua

@@ -0,0 +1,74 @@
+local h = require("tests.helpers")
+local adapter
+
+local new_set = MiniTest.new_set
+T = new_set()
+
+T["Gemini CLI adapter"] = new_set({
+  hooks = {
+    pre_case = function()
+      adapter = require("codecompanion.adapters").resolve("gemini_cli")
+    end,
+  },
+})
+
+T["Gemini CLI adapter"]["only sends fresh user messages to the LLM"] = function()
+  local messages = {
+    {
+      _meta = {
+        sent = true,
+      },
+      content = "Can you explain Ruby in two words?",
+      role = "user",
+    },
+    {
+      _meta = {},
+      content = "Dynamic. Elegant",
+      role = "llm",
+    },
+    {
+      _meta = {},
+      content = "Awesome! Thanks",
+      role = "user",
+    },
+  }
+
+  local output = {
+    {
+      text = "Awesome! Thanks",
+      type = "text",
+    },
+  }
+
+  h.eq(output, adapter.handlers.form_messages(adapter, messages))
+end
+
+T["Gemini CLI adapter"]["can form multiple messages to be sent"] = function()
+  local messages = {
+    {
+      _meta = {},
+      content = "Can you explain Ruby in two words?",
+      role = "user",
+    },
+    {
+      _meta = {},
+      content = "Make it snappy",
+      role = "user",
+    },
+  }
+
+  local output = {
+    {
+      text = "Can you explain Ruby in two words?",
+      type = "text",
+    },
+    {
+      text = "Make it snappy",
+      type = "text",
+    },
+  }
+
+  h.eq(output, adapter.handlers.form_messages(adapter, messages))
+end
+
+return T