feat: allow running commands in a shell (#49)

1 files changed, 43 insertions, 0 deletions

diff --git a/tests/runner_spec.lua b/tests/runner_spec.lua
index 10ea075..56cf8e2 100644
--- a/tests/runner_spec.lua
+++ b/tests/runner_spec.lua
@@ -102,6 +102,49 @@ describe("runner", function()
       local cmd = runner.build_cmd(ctx, config)
       assert.are.same({ "echo", "--stdin" }, cmd)
     end)
+
+    it("replaces $FILENAME in string args", function()
+      vim.cmd.edit({ args = { "README.md" } })
+      local bufnr = vim.api.nvim_get_current_buf()
+      conform.formatters.test = {
+        meta = { url = "", description = "" },
+        command = "echo",
+        args = "$FILENAME | patch",
+      }
+      local config = assert(conform.get_formatter_config("test"))
+      local ctx = runner.build_context(0, config)
+      local cmd = runner.build_cmd(ctx, config)
+      assert.equal("echo " .. vim.api.nvim_buf_get_name(bufnr) .. " | patch", cmd)
+    end)
+
+    it("replaces $DIRNAME in string args", function()
+      vim.cmd.edit({ args = { "README.md" } })
+      local bufnr = vim.api.nvim_get_current_buf()
+      conform.formatters.test = {
+        meta = { url = "", description = "" },
+        command = "echo",
+        args = "$DIRNAME | patch",
+      }
+      local config = assert(conform.get_formatter_config("test"))
+      local ctx = runner.build_context(0, config)
+      local cmd = runner.build_cmd(ctx, config)
+      assert.equal("echo " .. vim.fs.dirname(vim.api.nvim_buf_get_name(bufnr)) .. " | patch", cmd)
+    end)
+
+    it("resolves arg function with string results", function()
+      vim.cmd.edit({ args = { "README.md" } })
+      conform.formatters.test = {
+        meta = { url = "", description = "" },
+        command = "echo",
+        args = function()
+          return "| patch"
+        end,
+      }
+      local config = assert(conform.get_formatter_config("test"))
+      local ctx = runner.build_context(0, config)
+      local cmd = runner.build_cmd(ctx, config)
+      assert.equal("echo | patch", cmd)
+    end)
   end)
 
   describe("e2e", function()