Add Node planner test and additional checks for planner fields (#87)

## Summary
Add Node planner test and additional checks for planner fields

## How was it tested?
go test ./...

Author: LucilleH

devbox_test.go

@@ -50,16 +50,34 @@ func testIndividualPlan(t *testing.T, testPath string) {
 		assert.NoError(err, "plan.json should parse correctly")
 		expected.Errors = nil
 
-		// For now we only compare the DevPackages and RuntimePackages fields:
 		assert.ElementsMatch(expected.DevPackages, plan.DevPackages, "DevPackages should match")
 		assert.ElementsMatch(expected.RuntimePackages, plan.RuntimePackages, "RuntimePackages should match")
 		assert.Equal(expected.InstallStage.GetCommand(), plan.InstallStage.GetCommand(), "Install stage should match")
 		assert.Equal(expected.BuildStage.GetCommand(), plan.BuildStage.GetCommand(), "Build stage should match")
 		assert.Equal(expected.StartStage.GetCommand(), plan.StartStage.GetCommand(), "Start stage should match")
+		// Check that input files are the same for all stages.
+		// Depending on where the test command is invoked, the input file paths can be different.
+		// We will compare the file name only.
+		assert.ElementsMatch(expected.InstallStage.GetInputFiles(), getFileNames(plan.InstallStage.GetInputFiles()), "InstallStage.InputFiles should match")
+		assert.ElementsMatch(expected.BuildStage.GetInputFiles(), getFileNames(plan.BuildStage.GetInputFiles()), "BuildStage.InputFiles should match")
+		assert.ElementsMatch(expected.StartStage.GetInputFiles(), getFileNames(plan.StartStage.GetInputFiles()), "StartStage.InputFiles should match")
 	})
 }
 
 func fileExists(path string) bool {
 	_, err := os.Stat(path)
 	return err == nil
 }
+
+func getFileNames(paths []string) []string {
+	names := []string{}
+	for _, path := range paths {
+		if path == "." {
+			names = append(names, path)
+		} else {
+			names = append(names, filepath.Base(path))
+		}
+	}
+
+	return names
+}

examples/go/devbox.json

@@ -0,0 +1,3 @@
+{
+  "packages": []
+}

examples/nodejs/devbox.json

@@ -0,0 +1,3 @@
+{
+  "packages": []
+}

examples/php/devbox.json

@@ -0,0 +1,3 @@
+{
+  "packages": []
+}

examples/python-poetry-not-buildable/devbox.json

@@ -0,0 +1,3 @@
+{
+  "packages": []
+}

examples/python-poetry/devbox.json

@@ -0,0 +1,3 @@
+{
+  "packages": []
+}

planner/plan.go

@@ -59,6 +59,13 @@ func (s *Stage) GetCommand() string {
 	return s.Command
 }
 
+func (s *Stage) GetInputFiles() []string {
+	if s == nil {
+		return []string{}
+	}
+	return s.InputFiles
+}
+
 func (p *Plan) String() string {
 	b, err := json.MarshalIndent(p, "", "  ")
 	if err != nil {

testdata/go/go-1.17/plan.json

@@ -1,15 +1,21 @@
 {
-  "dev_packages": [
-    "go_1_17"
-  ],
-  "runtime_packages": [],
   "install_stage": {
-    "command": "go get"
+    "command": "go get",
+    "input_files": [
+      "."
+    ]
   },
   "build_stage": {
     "command": "CGO_ENABLED=0 go build -o app"
   },
   "start_stage": {
-    "command": "./app"
-  }
-}
+    "command": "./app",
+    "input_files": [
+      "."
+    ]
+  },
+  "dev_packages": [
+    "go_1_17"
+  ],
+  "runtime_packages": []
+}

testdata/go/go-1.18/plan.json

@@ -1,15 +1,21 @@
 {
-  "dev_packages": [
-    "go"
-  ],
-  "runtime_packages": [],
   "install_stage": {
-    "command": "go get"
+    "command": "go get",
+    "input_files": [
+      "."
+    ]
   },
   "build_stage": {
     "command": "CGO_ENABLED=0 go build -o app"
   },
   "start_stage": {
-    "command": "./app"
-  }
-}
+    "command": "./app",
+    "input_files": [
+      "."
+    ]
+  },
+  "dev_packages": [
+    "go"
+  ],
+  "runtime_packages": []
+}

testdata/go/go-1.19/plan.json

@@ -1,15 +1,21 @@
 {
-  "dev_packages": [
-    "go_1_19"
-  ],
-  "runtime_packages": [],
   "install_stage": {
-    "command": "go get"
+    "command": "go get",
+    "input_files": [
+      "."
+    ]
   },
   "build_stage": {
     "command": "CGO_ENABLED=0 go build -o app"
   },
   "start_stage": {
-    "command": "./app"
-  }
-}
+    "command": "./app",
+    "input_files": [
+      "."
+    ]
+  },
+  "dev_packages": [
+    "go_1_19"
+  ],
+  "runtime_packages": []
+}