diff --git a/.travis.yml b/.travis.yml
index b7f0a2af..4bb4326a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,4 +9,4 @@ matrix:
 notifications:
   email: false
 script:
-- go get -u -v github.com/go-task/task/cmd/task && task build
+- go get -u -v github.com/go-task/task/cmd/task && task ci
diff --git a/Taskfile.yml b/Taskfile.yml
index 4022a733..64480f09 100644
--- a/Taskfile.yml
+++ b/Taskfile.yml
@@ -60,3 +60,10 @@ tasks:
       CGO_ENABLED: '0'
       GOOS: '{{OS}}'
       GOARCH: '{{ARCH}}'
+
+  ci:
+    desc: CI build and tests
+    cmds:
+    - task: build
+    - if [ -n "$(git status --porcelain)" ];then echo "Diff in generated files and/or formatting" && exit 1; fi
+    silent: true
diff --git a/e2e/e2e_test.go b/e2e/e2e_test.go
index adec379a..02c6b981 100644
--- a/e2e/e2e_test.go
+++ b/e2e/e2e_test.go
@@ -153,6 +153,7 @@ func TestGetAndPutE2E(t *testing.T) {
 		putParameters       resource.PutParameters
 		versionString       string
 		metadataString      string
+		filesString         string
 		metadataFiles       map[string]string
 		expectedCommitCount int
 		expectedCommits     []string
@@ -308,6 +309,27 @@ func TestGetAndPutE2E(t *testing.T) {
 				"Add comment after creating first pull request.",
 			},
 		},
+		{
+			description: "get works with list_changed_files",
+			source: resource.Source{
+				Repository:  "itsdalmo/test-repository",
+				AccessToken: os.Getenv("GITHUB_ACCESS_TOKEN"),
+			},
+			version: resource.Version{
+				PR:            targetPullRequestID,
+				Commit:        targetCommitID,
+				CommittedDate: time.Time{},
+			},
+			getParameters: resource.GetParameters{
+				ListChangedFiles: true,
+			},
+			putParameters:       resource.PutParameters{},
+			versionString:       `{"pr":"4","commit":"a5114f6ab89f4b736655642a11e8d15ce363d882","committed":"0001-01-01T00:00:00Z"}`,
+			metadataString:      `[{"name":"pr","value":"4"},{"name":"url","value":"https://github.com/itsdalmo/test-repository/pull/4"},{"name":"head_name","value":"my_second_pull"},{"name":"head_sha","value":"a5114f6ab89f4b736655642a11e8d15ce363d882"},{"name":"base_name","value":"master"},{"name":"base_sha","value":"93eeeedb8a16e6662062d1eca5655108977cc59a"},{"name":"message","value":"Push 2."},{"name":"author","value":"itsdalmo"}]`,
+			filesString:         "README.md\ntest.txt\n",
+			expectedCommitCount: 10,
+			expectedCommits:     []string{"Merge commit 'a5114f6ab89f4b736655642a11e8d15ce363d882'"},
+		},
 	}
 
 	for _, tc := range tests {
@@ -336,6 +358,11 @@ func TestGetAndPutE2E(t *testing.T) {
 			metadata := readTestFile(t, filepath.Join(dir, ".git", "resource", "metadata.json"))
 			assert.Equal(t, tc.metadataString, metadata)
 
+			if tc.getParameters.ListChangedFiles {
+				changedFiles := readTestFile(t, filepath.Join(dir, ".git", "resource", "changed_files"))
+				assert.Equal(t, tc.filesString, changedFiles)
+			}
+
 			for filename, expected := range tc.metadataFiles {
 				actual := readTestFile(t, filepath.Join(dir, ".git", "resource", filename))
 				assert.Equal(t, expected, actual)
diff --git a/in_test.go b/in_test.go
index e493ce09..77807990 100644
--- a/in_test.go
+++ b/in_test.go
@@ -39,21 +39,10 @@ func TestGet(t *testing.T) {
 				Commit:        "commit1",
 				CommittedDate: time.Time{},
 			},
-			parameters:     resource.GetParameters{
-				ListChangedFiles: true,
-			},
+			parameters:     resource.GetParameters{},
 			pullRequest:    createTestPR(1, "master", false, false),
 			versionString:  `{"pr":"pr1","commit":"commit1","committed":"0001-01-01T00:00:00Z"}`,
 			metadataString: `[{"name":"pr","value":"1"},{"name":"url","value":"pr1 url"},{"name":"head_name","value":"pr1"},{"name":"head_sha","value":"oid1"},{"name":"base_name","value":"master"},{"name":"base_sha","value":"sha"},{"name":"message","value":"commit message1"},{"name":"author","value":"login1"}]`,
-			files:    		[]resource.ChangedFileObject{
-				{
-					Path: "README.md",
-				},
-				{
-					Path: "Other.md",
-				},
-			},
-			filesString:    "README.md\nOther.md\n",
 		},
 		{
 			description: "get supports unlocking with git crypt",
@@ -67,21 +56,10 @@ func TestGet(t *testing.T) {
 				Commit:        "commit1",
 				CommittedDate: time.Time{},
 			},
-			parameters:     resource.GetParameters{
-				ListChangedFiles: true,
-			},
+			parameters:     resource.GetParameters{},
 			pullRequest:    createTestPR(1, "master", false, false),
 			versionString:  `{"pr":"pr1","commit":"commit1","committed":"0001-01-01T00:00:00Z"}`,
 			metadataString: `[{"name":"pr","value":"1"},{"name":"url","value":"pr1 url"},{"name":"head_name","value":"pr1"},{"name":"head_sha","value":"oid1"},{"name":"base_name","value":"master"},{"name":"base_sha","value":"sha"},{"name":"message","value":"commit message1"},{"name":"author","value":"login1"}]`,
-			files:    		[]resource.ChangedFileObject{
-				{
-					Path: "README.md",
-				},
-				{
-					Path: "Other.md",
-				},
-			},
-			filesString:    "README.md\nOther.md\n",
 		},
 		{
 			description: "get supports rebasing",
@@ -95,21 +73,11 @@ func TestGet(t *testing.T) {
 				CommittedDate: time.Time{},
 			},
 			parameters: resource.GetParameters{
-				IntegrationTool:  "rebase",
-				ListChangedFiles: true,
+				IntegrationTool: "rebase",
 			},
 			pullRequest:    createTestPR(1, "master", false, false),
 			versionString:  `{"pr":"pr1","commit":"commit1","committed":"0001-01-01T00:00:00Z"}`,
 			metadataString: `[{"name":"pr","value":"1"},{"name":"url","value":"pr1 url"},{"name":"head_name","value":"pr1"},{"name":"head_sha","value":"oid1"},{"name":"base_name","value":"master"},{"name":"base_sha","value":"sha"},{"name":"message","value":"commit message1"},{"name":"author","value":"login1"}]`,
-			files:    		[]resource.ChangedFileObject{
-				{
-					Path: "README.md",
-				},
-				{
-					Path: "Other.md",
-				},
-			},
-			filesString:    "README.md\nOther.md\n",
 		},
 		{
 			description: "get supports checkout",
@@ -123,21 +91,11 @@ func TestGet(t *testing.T) {
 				CommittedDate: time.Time{},
 			},
 			parameters: resource.GetParameters{
-				IntegrationTool:  "checkout",
-				ListChangedFiles: true,
+				IntegrationTool: "checkout",
 			},
 			pullRequest:    createTestPR(1, "master", false, false),
 			versionString:  `{"pr":"pr1","commit":"commit1","committed":"0001-01-01T00:00:00Z"}`,
 			metadataString: `[{"name":"pr","value":"1"},{"name":"url","value":"pr1 url"},{"name":"head_name","value":"pr1"},{"name":"head_sha","value":"oid1"},{"name":"base_name","value":"master"},{"name":"base_sha","value":"sha"},{"name":"message","value":"commit message1"},{"name":"author","value":"login1"}]`,
-			files:    		[]resource.ChangedFileObject{
-				{
-					Path: "README.md",
-				},
-				{
-					Path: "Other.md",
-				},
-			},
-			filesString:    "README.md\nOther.md\n",
 		},
 		{
 			description: "get supports git_depth",
@@ -150,25 +108,15 @@ func TestGet(t *testing.T) {
 				Commit:        "commit1",
 				CommittedDate: time.Time{},
 			},
-			parameters:     resource.GetParameters{
-				GitDepth:         2,
-				ListChangedFiles: true,
+			parameters: resource.GetParameters{
+				GitDepth: 2,
 			},
 			pullRequest:    createTestPR(1, "master", false, false),
 			versionString:  `{"pr":"pr1","commit":"commit1","committed":"0001-01-01T00:00:00Z"}`,
 			metadataString: `[{"name":"pr","value":"1"},{"name":"url","value":"pr1 url"},{"name":"head_name","value":"pr1"},{"name":"head_sha","value":"oid1"},{"name":"base_name","value":"master"},{"name":"base_sha","value":"sha"},{"name":"message","value":"commit message1"},{"name":"author","value":"login1"}]`,
-			files:    		[]resource.ChangedFileObject{
-				{
-					Path: "README.md",
-				},
-				{
-					Path: "Other.md",
-				},
-			},
-			filesString:    "README.md\nOther.md\n",
 		},
 		{
-			description: "get works no file list",
+			description: "get supports list_changed_files",
 			source: resource.Source{
 				Repository:  "itsdalmo/test-repository",
 				AccessToken: "oauthtoken",
@@ -178,12 +126,21 @@ func TestGet(t *testing.T) {
 				Commit:        "commit1",
 				CommittedDate: time.Time{},
 			},
-			parameters:     resource.GetParameters{
-				ListChangedFiles: false,
+			parameters: resource.GetParameters{
+				ListChangedFiles: true,
+			},
+			pullRequest: createTestPR(1, "master", false, false),
+			files: []resource.ChangedFileObject{
+				{
+					Path: "README.md",
+				},
+				{
+					Path: "Other.md",
+				},
 			},
-			pullRequest:    createTestPR(1, "master", false, false),
 			versionString:  `{"pr":"pr1","commit":"commit1","committed":"0001-01-01T00:00:00Z"}`,
 			metadataString: `[{"name":"pr","value":"1"},{"name":"url","value":"pr1 url"},{"name":"head_name","value":"pr1"},{"name":"head_sha","value":"oid1"},{"name":"base_name","value":"master"},{"name":"base_sha","value":"sha"},{"name":"message","value":"commit message1"},{"name":"author","value":"login1"}]`,
+			filesString:    "README.md\nOther.md\n",
 		},
 	}