CI: Migrate slow test suit from Travis CI

Signed-off-by: Jessica Wagantall <[email protected]>

.github/workflows/tests.yml

@@ -1,6 +1,6 @@
 name: urchin tests
 
-on: [push]
+on: [pull_request, push]
 
 permissions:
   contents: read
@@ -31,6 +31,7 @@ jobs:
         suite:
           - install_script
           - sourcing
+          - slow
         shell:
           - sh
           - bash
@@ -52,7 +53,7 @@ jobs:
             packages.microsoft.com:443
       - uses: actions/checkout@v4
       - run: sudo apt-get update; sudo apt-get install ${{ matrix.shell }}
-        if: matrix.shell == 'zsh' || matrix.shell == 'ksh'
+        if: matrix.shell == 'zsh' || matrix.shell == 'ksh' || matrix.shell == 'sh'
         # zsh (https://github.com/actions/runner-images/issues/264) and ksh are not in the ubuntu image
         shell: bash
       - run: sudo ${{ matrix.shell }} --version 2> /dev/null || dpkg -s ${{ matrix.shell }} 2> /dev/null || which ${{ matrix.shell }}

.travis.yml

@@ -87,11 +87,6 @@ env:
     - SHELL=bash TEST_SUITE=fast
     - SHELL=zsh TEST_SUITE=fast
     #  - SHELL=ksh TEST_SUITE=fast
-    - SHELL=sh TEST_SUITE=slow
-    - SHELL=dash TEST_SUITE=slow
-    - SHELL=bash TEST_SUITE=slow
-    - SHELL=zsh TEST_SUITE=slow
-    #  - SHELL=ksh TEST_SUITE=slow
     - SHELL=sh TEST_SUITE=installation_iojs
     - SHELL=sh TEST_SUITE=installation_iojs WITHOUT_CURL=1
     - SHELL=dash TEST_SUITE=installation_iojs