Add integration test for file provenance type

.github/bin/diff-filter.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+FIRST_ARTIFACT=$1
+SECOND_ARTIFACT=$2
+# Comma seperated line of text of attributes to skip, examples are: buildFinishedOn,sha1
+# SKIP_LINES=$3
+
+diff_artifacts() {
+    diff -f $FIRST_ARTIFACT $SECOND_ARTIFACT > difference.txt
+    grep -vF "buildFinishedOn" difference.txt > difference2.txt
+    grep -vF "sha1" difference2.txt > difference3.txt
+    cat difference3.txt
+    # cat difference.txt | grep -vF "buildFinishedOn" | grep -vF "sha1" | grep -vF "buildInvocationId" | grep -vE "^c" | grep -vE "^."
+}
+
+diff_artifacts

.github/workflows/integration-test-file-type.yml

@@ -0,0 +1,45 @@
+name: Integration test file provenance
+
+on:
+  push:
+    branches:
+      - tests
+  workflow_dispatch:
+
+jobs:
+  build:
+    name: Build artifact
+    runs-on: ubuntu-latest
+    steps:
+      # traditionally you would build your code here and generate an artifact
+      - name: Create first artifact
+        run:  echo "onion, tomato, jalapeno, cilantro, lime, salt" > salsa.txt
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v2
+        with:
+          path: '*.txt'
+
+  generate-provenance:
+    needs: build
+    name: Generate build provenance
+    runs-on: ubuntu-latest
+    steps:
+      # checkout only required to run local action (defined in this repo)
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Download build artifact
+        uses: actions/download-artifact@v2
+
+      - name: Generate provenance
+        # use action in the root directory
+        uses: ./
+        with:
+          artifact_path: artifact/
+
+      - name: Get example build.provenance
+        run: curl https://gist.githubusercontent.com/Brend-Smits/f4cc4f6ccb140712796c23b75dbf70e0/raw/5040c0a727f9e2e6e337ac987fff36b5ff67757f/gistfile1.txt >> example-build.provance
+
+      - name: Check and Match contents of provenance
+        run: sh ../bin/diff-checker.sh artifact/build.provance example-build.provance