Add seperate test job installing test deps

.github/workflows/ci.yml

@@ -3,9 +3,11 @@ name: CI
 on: push
 
 jobs:
-  mypy:
+
+  basic_install:
     name: 'pip install'
     runs-on: ubuntu-latest
+
     steps:
 
       - name: Checkout
@@ -24,5 +26,20 @@ jobs:
       - name: Run piker cli
         run: piker 
 
-      - name: Run test suite
-        run: pytest tests
+  testing:
+
+    steps:
+
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Setup python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.9'
+
+      - name: Install dependencies
+        run: pip install -U . -r requirements-test.txt --upgrade-strategy eager
+
+      - name: Test suite
+        run: pytest tests -rs

requirements-test.txt

@@ -0,0 +1 @@
+pytest