Create a test for progress reporting in the initialize request

Author: eliericha

testsuite/ada_lsp/initialize_progress/hello.gpr

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+project Hello is
+   
+end Hello;

testsuite/ada_lsp/initialize_progress/test.py

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+# The goal of this test is to check that if the initialize request includes a progress
+# reporting token, then progress is reported by the ALS.
+import os
+
+from drivers import pylsp
+from drivers.pylsp import URI, to_str
+from lsprotocol.types import ClientCapabilities, InitializeParams, InitializedParams
+
+
+@pylsp.test(initialize=False)
+async def test(lsp: pylsp.ALSLanguageClient):
+    lsp.capabilities = ClientCapabilities()
+    progress_token = "init-progress"
+    result = await lsp.initialize_async(
+        InitializeParams(
+            capabilities=lsp.capabilities,
+            root_uri=URI(os.getcwd()),
+            initialization_options={},
+            # Include a progress token to check that we receive progress reports during
+            # the initialize request
+            work_done_token=progress_token,
+        )
+    )
+
+    # Assert that we received progress reports
+    lsp.assertEqual(
+        to_str(lsp.progress_reports.get(progress_token, None)),
+        """
+[
+  {
+    "title": "Initializing Ada Language Server",
+    "kind": "begin",
+    "cancellable": false
+  },
+  {
+    "kind": "end"
+  }
+]
+""".strip(),
+    )
+
+    # Assert a non-null result
+    lsp.assertNotEqual(result, None)
+
+    lsp.initialized(InitializedParams())
+
+    lsp.assertEqual(await lsp.getCurrentProject(), URI("hello.gpr"))

testsuite/ada_lsp/initialize_progress/test.yaml

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+driver: pylsp