INSTALL.md: document expected output

Author: pmbittner

INSTALL.md

@@ -43,4 +43,43 @@ Once the image has been build, you can start the demo with
 ./docker.sh demo
 ```
 
-## Nix Setup
+## Nix Setup
+
+## Expected Output
+
+The expected output is close to the output shown at the end of the [screencast](https://www.youtube.com/watch?v=q6ight5EDQY).
+When you run the demo, a text-based diff should be printed to the terminal, followed by four windows opening up:
+![Screenshot of expected output](docs/expected_output_1.png).
+After closing these windows (use `ESC` key for fast closing), there should be another four windows opening with the same trees and diffs but not in the simplified "foo/bar" version.
+After closing these windows, a small example analysis of the xterm repository should run in the terminal.
+The analysis should take about 30s-5min, and its output to terminal should look similar to this:
+```
+2024-04-27 11:40:46 INFO    [AnalysisRunner.run] Reading and cloning git repositories from/to: data\repos
+2024-04-27 11:40:46 INFO    [AnalysisRunner.run] Writing output to: data\output
+2024-04-27 11:40:46 INFO    [AnalysisRunner.run] Loading datasets file: data\demo-dataset.md
+2024-04-27 11:40:46 INFO    [AnalysisRunner.run] Performing validation on the following repositories:
+2024-04-27 11:40:46 INFO    [AnalysisRunner.run]   - xterm from https://github.com/DiffDetective/xterm.git
+2024-04-27 11:40:46 INFO    [AnalysisRunner.run] Preloading repositories:
+2024-04-27 11:40:46 INFO    [Repository.load] Loading git at data\repos\xterm ...
+2024-04-27 11:40:47 INFO    [Analysis.forEachRepository]  === Begin Processing xterm ===
+2024-04-27 11:40:47 INFO    [Analysis.forEachCommit] >>> Scheduling asynchronous analysis on 8 threads.
+2024-04-27 11:40:47 INFO    [Analysis.forEachCommit] <<< done in 0.222s
+2024-04-27 11:40:47 INFO    [Analysis.forEachCommit] >>> Run Analysis
+2024-04-27 11:41:21 INFO    [DemoAnalysis.endBatch] Batch done: 11 commits analyzed
+2024-04-27 11:41:38 INFO    [DemoAnalysis.endBatch] Batch done: 20 commits analyzed
+2024-04-27 11:41:39 INFO    [DemoAnalysis.endBatch] Batch done: 20 commits analyzed
+2024-04-27 11:41:39 INFO    [DemoAnalysis.endBatch] Batch done: 20 commits analyzed
+2024-04-27 11:41:40 INFO    [DemoAnalysis.endBatch] Batch done: 20 commits analyzed
+2024-04-27 11:41:40 INFO    [DemoAnalysis.endBatch] Batch done: 20 commits analyzed
+2024-04-27 11:41:40 INFO    [Analysis.forEachCommit] <<< done in 53.09s
+2024-04-27 11:41:40 INFO    [Analysis.exportMetadataToFile] Metadata:
+    analysis: my analysis
+    repository: xterm
+    big diffs: 188
+    runtime with multithreading in seconds: 53.09
+    total commits: 111
+
+2024-04-27 11:41:40 INFO    [Analysis.forEachRepository]  === End Processing xterm after 53.379s ===
+2024-04-27 11:41:40 INFO    [AnalysisRunner.run] Done
+```
+The output files of the analysis should be located at [data/output](data/output).