fix(parser): handler heading without value

Author: boltlessengineer

lua/rest-nvim/parser/init.lua

@@ -69,11 +69,14 @@ local function parse_headers(req_node, source, context)
   local header_nodes = req_node:field("header")
   for _, node in ipairs(header_nodes) do
     local key = assert(get_node_field_text(node, "name", source))
-    local value = assert(get_node_field_text(node, "value", source))
-    key = expand_variables(key, context)
-    value = expand_variables(value, context)
-    key = string.lower(key)
-    table.insert(headers[key], value)
+    local value = get_node_field_text(node, "value", source)
+    key = expand_variables(key, context):lower()
+    if value then
+      value = expand_variables(value, context)
+      table.insert(headers[key], value)
+    else
+      headers[key] = {}
+    end
   end
   return setmetatable(headers, nil)
 end
@@ -385,7 +388,7 @@ function parser.parse(node, source, ctx)
 
   ---@type string?
   local content_type
-  if headers["content-type"] then
+  if headers["content-type"] and #headers["content-type"] > 0 then
     content_type = headers["content-type"][1]:match("([^;]+)")
   end
   local body

spec/parser/http_parser_spec.lua

@@ -72,6 +72,26 @@ HOST: localhost:8000
     local req = assert(parser.parse(req_node, source))
     assert.same("http://localhost:8000/some/path", req.url)
   end)
+  it("parse request with headers", function ()
+    local source = [[
+http://example.com/api
+X-Header1: value1
+X-Header2:
+X-Header1: value2
+]]
+    local _, tree = utils.ts_parse_source(source)
+    local req_node = assert(tree:root():child(0))
+    assert.same({
+      url = "http://example.com/api",
+      method = "GET",
+      headers = {
+        ["x-header1"] = { "value1", "value2" },
+        ["x-header2"] = {},
+      },
+      handlers = {},
+      cookies = {},
+    }, parser.parse(req_node, source))
+  end)
 
   describe("parse body", function()
     it("json body", function()