Add small improvements and tests, new prediction quality metric

.github/workflows/on-pr.yaml

@@ -0,0 +1,14 @@
+name: Build
+
+on:
+  pull_request:
+    branches:
+      - main
+      - stable
+      - release
+
+jobs:
+  test:
+    uses: ./.github/workflows/test.yaml
+    with: 
+      branch: ${{ github.ref }}

.github/workflows/publish.yaml → .github/workflows/on-push.yaml

@@ -14,8 +14,14 @@ env:
   IMAGE_NAME: ${{ github.repository }}
 
 jobs:
+  test:
+    uses: ./.github/workflows/test.yaml
+    with: 
+      branch: ${{ github.ref }}
+
   publish:
-    runs-on: self-hosted
+    needs: test
+    runs-on: ubuntu-latest
     container: docker:latest
 
     permissions:

.github/workflows/test.yaml

@@ -0,0 +1,32 @@
+name: Run unit tests
+
+on:
+  workflow_call:
+    inputs:
+      branch:
+        description: 'The branch to test'
+        required: true
+        type: string
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go-version: [ '1.19', '1.20', '1.21.x' ]
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: ${{ matrix.go-version }}
+      - name: Install dependencies
+        run: go get .
+      - name: Test with Go
+        run: go test -json > TestResults-${{ matrix.go-version }}.json
+      - name: Upload Go test results
+        uses: actions/upload-artifact@v4
+        with:
+          name: Go-results-${{ matrix.go-version }}
+          path: TestResults-${{ matrix.go-version }}.json

LICENSE

@@ -0,0 +1,201 @@
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README.md

@@ -1,6 +1,6 @@
 # Predictor
 
-A minimalistic service that syncs signal groups from a SensorThings API and publishes predictions about them. This project is a proof-of-work for a prediction algorithm that has many advantages over the "old" prediction service:
+A minimalistic service that syncs signal groups from a SensorThings API and publishes predictions about them. This project is a proof-of-concept for a prediction algorithm that has many advantages over our current "old" prediction service:
 
 - Predictions are published with every possible signal state, not only green and red. This allows for signals that change between other states (e.g. black/red or black/amber) and the displaying of indermediate states (amber-red/amber) in the PrioBike app.
 - Predictions are immediately available due to a history persistence which reacts to the currently running program.

calc/abs_test.go

@@ -0,0 +1,11 @@
+package calc
+
+import (
+	"testing"
+)
+
+func TestAbs(t *testing.T) {
+	if Abs(-1) != 1 || Abs(1) != 1 {
+		t.Errorf("abs doesn't work")
+	}
+}

calc/max_test.go

@@ -0,0 +1,21 @@
+package calc
+
+import "testing"
+
+func TestMax(t *testing.T) {
+	if Max(1_000_000, 2) != 1_000_000 {
+		t.Errorf("max doesn't work")
+	}
+	if Max(-1, 1_000_000) != 1_000_000 {
+		t.Errorf("max doesn't work")
+	}
+}
+
+func TestMax64(t *testing.T) {
+	if Max64(1_000_000_000_000, 2) != 1_000_000_000_000 {
+		t.Errorf("max64 doesn't work")
+	}
+	if Max64(-1, 1_000_000_000_000) != 1_000_000_000_000 {
+		t.Errorf("max64 doesn't work")
+	}
+}

calc/min_test.go

@@ -0,0 +1,21 @@
+package calc
+
+import "testing"
+
+func TestMin(t *testing.T) {
+	if Min(1_000_000, 2) != 2 {
+		t.Errorf("Min doesn't work")
+	}
+	if Min(-1, 1_000_000) != -1 {
+		t.Errorf("Min doesn't work")
+	}
+}
+
+func TestMin64(t *testing.T) {
+	if Min64(1_000_000_000_000, 2) != 2 {
+		t.Errorf("Min64 doesn't work")
+	}
+	if Min64(-1, 1_000_000_000_000) != -1 {
+		t.Errorf("Min64 doesn't work")
+	}
+}