test.lua: Dump some DF globals

This should help identify differences in environments, e.g. what the screen
resolution is in `PRINT_MODE:TEXT`. The `scripts/gui/blueprint:render_labels`
test currently fails in an 80x25 resolution, which implies that our CI is using
something else.

.github/workflows/build.yml

@@ -89,7 +89,7 @@ jobs:
         script -qe -c "python ci/run-tests.py --headless --keep-status \"$DF_FOLDER\"" || status=$((status + 1))
         python ci/check-rpc.py "$DF_FOLDER/dfhack-rpc.txt" || status=$((status + 2))
         mkdir -p artifacts
-        cp "$DF_FOLDER/test_status.json" "$DF_FOLDER"/*.log artifacts || status=$((status + 4))
+        cp "$DF_FOLDER"/test*.json "$DF_FOLDER"/*.log artifacts || status=$((status + 4))
         exit $status
     - name: Upload test artifacts
       uses: actions/upload-artifact@v1

ci/test.lua

@@ -72,6 +72,7 @@ arrays. For example:
 
 local CONFIG_FILE = 'test_config.json'
 local STATUS_FILE = 'test_status.json'
+local DF_STATE_FILE = 'test_df_state.json'
 local TestStatus = {
     PENDING = 'pending',
     PASSED = 'passed',
@@ -569,6 +570,23 @@ local function run_tests(tests, status, counts, config)
     save_test_status(status)
 end
 
+local function dump_df_state()
+    local state = {
+        enabler = {
+            fps = df.global.enabler.fps,
+            gfps = df.global.enabler.gfps,
+            fullscreen = df.global.enabler.fullscreen,
+        },
+        gps = {
+            dimx = df.global.gps.dimx,
+            dimy = df.global.gps.dimy,
+            display_frames = df.global.gps.display_frames,
+        },
+    }
+    json.encode_file(state, DF_STATE_FILE)
+    print('DF global state: ' .. json.encode(state, {pretty = false}))
+end
+
 local function main(args)
     local help, resume, test_dir, mode_filter, save_dir, test_filter =
             false, false, nil, {}, nil, {}
@@ -610,6 +628,7 @@ local function main(args)
         file_errors = 0,
     }
 
+    dump_df_state()
     local test_files = get_test_files(config.test_dir)
     local tests = get_tests(test_files, counts)
     local status = filter_tests(tests, config)