plugins/dap: init + extensions + tests (#455)

tests/test-sources/plugins/dap/nvim-dap.nix

@@ -0,0 +1,85 @@
+{
+  empty = {
+    plugins.dap.enable = true;
+  };
+
+  example = {
+    plugins.dap = {
+      enable = true;
+
+      adapters = {
+        executables = {
+          python = {
+            command = ".virtualenvs/tools/bin/python";
+            args = ["-m" "debugpy.adapter"];
+          };
+        };
+        servers = {
+          java = ''
+            function(callback, config)
+              M.execute_command({command = 'vscode.java.startDebugSession'}, function(err0, port)
+                assert(not err0, vim.inspect(err0))
+                callback({ type = 'server'; host = '127.0.0.1'; port = port; })
+              end)
+            end
+          '';
+          javaEnriched = {
+            host = "127.0.0.1";
+            port = 8080;
+            enrichConfig = ''
+              function(config, on_config)
+                local final_config = vim.deepcopy(config)
+                final_config.extra_property = 'This got injected by the adapter'
+                on_config(final_config)
+              end
+            '';
+          };
+        };
+      };
+      configurations = {
+        python = [
+          {
+            type = "python";
+            request = "launch";
+            name = "Launch file";
+            program = "$\{file}";
+          }
+        ];
+      };
+    };
+  };
+
+  default = {
+    plugins.dap = {
+      enable = true;
+
+      adapters = {
+        executables = {};
+        servers = {};
+      };
+      configurations = {};
+      signs = {
+        dapStopped = {
+          text = "→";
+          texthl = "DiagnosticWarn";
+        };
+        dapBreakpoint = {
+          text = "B";
+          texthl = "DiagnosticInfo";
+        };
+        dapBreakpointRejected = {
+          text = "R";
+          texthl = "DiagnosticError";
+        };
+        dapBreakpointCondition = {
+          text = "C";
+          texthl = "DiagnosticInfo";
+        };
+        dapLogPoint = {
+          text = "L";
+          texthl = "DiagnosticInfo";
+        };
+      };
+    };
+  };
+}