From 80281a34258e45d4e2b414d80524e3930849dc46 Mon Sep 17 00:00:00 2001
From: Oliver Zott <zott_oliver@web.de>
Date: Thu, 26 Jun 2025 12:07:07 +0200
Subject: [PATCH 1/3] pipeline test

---
 setup.py                          | 2 +-
 src/velosaurus_calc/calculator.py | 7 ++++---
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/setup.py b/setup.py
index 562d544..5f46929 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 
 setup(
     name="velosaurus_calc",
-    version="1.0.7",
+    version="1.0.9",
     description="Most awesome math package ever.",
     long_description=long_description,
     long_description_content_type="text/markdown",
diff --git a/src/velosaurus_calc/calculator.py b/src/velosaurus_calc/calculator.py
index d47ac97..e2ecf5c 100644
--- a/src/velosaurus_calc/calculator.py
+++ b/src/velosaurus_calc/calculator.py
@@ -1,10 +1,11 @@
 def add_floats(a: float, b: float) -> float:
-    return a + b
+    res = a - b
+    return res
 
 
 def subtract_floats(a: float, b: float) -> float:
-    return a + b
+    return a - b
 
 
 if __name__ == "__main__":
-    print(sum(2, 4))
+    print(add_floats(2, 4))

From 9472aa22c3cba87fc9d59ebaf548a19292b6d9b5 Mon Sep 17 00:00:00 2001
From: Oliver Zott <zott_oliver@web.de>
Date: Thu, 26 Jun 2025 12:21:53 +0200
Subject: [PATCH 2/3] pipeline test - fix

---
 README.md                         | 49 +++++++++++++++++++++++++++++++
 src/velosaurus_calc/calculator.py |  2 +-
 2 files changed, 50 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 89e70ee..445b8c9 100644
--- a/README.md
+++ b/README.md
@@ -64,3 +64,52 @@ Use Ruff instead of flake8 (linter), black (formatter) and isort (import sorter)
 
 - **mypy** (static type annotations)
   - `mypy --exclude venv .`
+
+## Pipelines (Workflows)
+
+- The overall automation process, defined in a YAML file, that runs on certain triggers (like push, pull request, etc.).
+- e.g. `python-linting.yml` file defines a pipeline (workflow).
+
+### Hierarchy in Github
+
+**In GitHub Actions, there are no native "stages"** like in Azure DevOps or GitLab CI.  
+The highest hierarchy in a workflow is:
+
+- **Workflow** (the whole YAML file, sometimes called a pipeline)
+  - **Jobs** (can run in parallel or in sequence using `needs`)
+    - **Steps** (run sequentially within a job)
+
+If you want to mimic "stages," you use multiple jobs and control their order with the `needs:` keyword. But officially, **jobs** are the top-level execution units inside a workflow.
+
+### **Runner**
+
+- **Definition:** A server (virtual machine or container) that executes your workflow jobs.
+- **Example:** `runs-on: ubuntu-latest` tells GitHub to use an Ubuntu runner.
+
+---
+
+### **Job**
+
+- **Definition:**
+  - A set of steps that run sequentially on the same runner.
+  - Multiple jobs in one pipeline (workflow) can run in parallel (unless you specify dependencies between them).
+  - Each job can specify its own runner using the runs-on key.
+  - By default, jobs run on separate runners (virtual machines or containers), which allows them to run in parallel and in isolated environments.
+- **Example:** Your `lint` job runs all the steps (checkout, setup Python, install, test, lint).
+
+---
+
+### **Action**
+
+- **Definition:** A reusable unit of code that performs a specific task in a workflow step.
+- **Example:** `actions/checkout@v2` is an action that checks out your code.
+
+---
+
+| Term     | GitHub Actions Example         | Description                                   |
+|----------|-------------------------------|-----------------------------------------------|
+| Runner   | `runs-on: ubuntu-latest`      | Where jobs run                                |
+| Action   | `actions/checkout@v2`         | Reusable step/task                            |
+| Pipeline | `.github/workflows/*.yml`     | The whole workflow process                    |
+| Stage    | (Not native, use jobs)        | Logical phase (build/test/deploy)             |
+| Job      | `jobs: lint:`                 | Group of steps on one runner                  |
diff --git a/src/velosaurus_calc/calculator.py b/src/velosaurus_calc/calculator.py
index e2ecf5c..eaac759 100644
--- a/src/velosaurus_calc/calculator.py
+++ b/src/velosaurus_calc/calculator.py
@@ -1,5 +1,5 @@
 def add_floats(a: float, b: float) -> float:
-    res = a - b
+    res = a + b
     return res
 
 

From d50530aa5ee6acaffc3bfbc0b079a7f0fbae1958 Mon Sep 17 00:00:00 2001
From: Oliver Zott <zott_oliver@web.de>
Date: Thu, 26 Jun 2025 12:42:31 +0200
Subject: [PATCH 3/3] pipeline test - fix bump2version

---
 .bumpversion.cfg | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 830cede..357ed61 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,6 +1,6 @@
 [bumpversion]
-current_version = 1.0.7
-commit = False
-tag = False
+current_version = 1.0.9
+commit = True
+tag = True
 
 [bumpversion:file:setup.py]
\ No newline at end of file