run server installation in async execution context (#525)

1 files changed, 47 insertions, 0 deletions

diff --git a/tests/core/async/spawn_spec.lua b/tests/core/async/spawn_spec.lua
new file mode 100644
index 00000000..721e4d08
--- /dev/null
+++ b/tests/core/async/spawn_spec.lua
@@ -0,0 +1,47 @@
+local spawn = require "nvim-lsp-installer.core.async.spawn"
+local process = require "nvim-lsp-installer.process"
+
+describe("async spawn", function()
+    it(
+        "should spawn commands and return stdout & stderr",
+        async_test(function()
+            local result = spawn.env {
+                env = { "FOO=bar" },
+            }
+            assert.is_true(result:is_success())
+            assert.equals("FOO=bar\n", result:get_or_nil().stdout)
+            assert.equals("", result:get_or_nil().stderr)
+        end)
+    )
+
+    it(
+        "should use provided stdio_sink",
+        async_test(function()
+            local stdio = process.in_memory_sink()
+            local result = spawn.env {
+                env = { "FOO=bar" },
+                stdio_sink = stdio.sink,
+            }
+            assert.is_true(result:is_success())
+            assert.equals(nil, result:get_or_nil().stdout)
+            assert.equals(nil, result:get_or_nil().stderr)
+            assert.equals("FOO=bar\n", table.concat(stdio.buffers.stdout, ""))
+            assert.equals("", table.concat(stdio.buffers.stderr, ""))
+        end)
+    )
+
+    it(
+        "should pass command arguments",
+        async_test(function()
+            local result = spawn.bash {
+                "-c",
+                'echo "Hello $VAR"',
+                env = { "VAR=world" },
+            }
+
+            assert.is_true(result:is_success())
+            assert.equals("Hello world\n", result:get_or_nil().stdout)
+            assert.equals("", result:get_or_nil().stderr)
+        end)
+    )
+end)