🌱 Add tests for probe output format (#3841)

* rename probe format file

Signed-off-by: Spencer Schrock <sschrock@google.com>

* add option parameter to probe result output function

the ability to pretty print will help write a test function

Signed-off-by: Spencer Schrock <sschrock@google.com>

* add test func

Signed-off-by: Spencer Schrock <sschrock@google.com>

* add docstring

Signed-off-by: Spencer Schrock <sschrock@google.com>

* clarify test. add another finding

Signed-off-by: Spencer Schrock <sschrock@google.com>

* force add the test file

Signed-off-by: Spencer Schrock <sschrock@google.com>

---------

Signed-off-by: Spencer Schrock <sschrock@google.com>

pkg/probe.go

@@ -31,7 +31,15 @@ type JSONScorecardProbeResult struct {
 	Findings  []finding.Finding `json:"findings"`
 }
 
-func (r *ScorecardResult) AsPJSON(writer io.Writer) error {
+// ProbeResultOption provides configuration options for the ScorecardResult probe output format.
+type ProbeResultOption struct {
+	// Indent is used to control the JSON indentation. For example, if you want to pretty print.
+	Indent string
+}
+
+// AsPJSON writes results as JSON for flat findings without checks.
+// It accepts an optional argument to configure the output.
+func (r *ScorecardResult) AsPJSON(writer io.Writer, o *ProbeResultOption) error {
 	encoder := json.NewEncoder(writer)
 	out := JSONScorecardProbeResult{
 		Repo: jsonRepoV2{
@@ -46,6 +54,10 @@ func (r *ScorecardResult) AsPJSON(writer io.Writer) error {
 		Findings: r.Findings,
 	}
 
+	if o != nil {
+		encoder.SetIndent("", o.Indent)
+	}
+
 	if err := encoder.Encode(out); err != nil {
 		return sce.WithMessage(sce.ErrScorecardInternal, fmt.Sprintf("encoder.Encode: %v", err))
 	}

pkg/probe_test.go

@@ -0,0 +1,88 @@
+// Copyright 2024 OpenSSF Scorecard Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package pkg
+
+import (
+	"bytes"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/google/go-cmp/cmp"
+
+	"github.com/ossf/scorecard/v4/finding"
+)
+
+func Test_AsPJSON(t *testing.T) {
+	t.Parallel()
+	tests := []struct {
+		name     string
+		expected string
+		result   ScorecardResult
+	}{
+		{
+			name:     "multiple findings displayed",
+			expected: "./testdata/probe1.json",
+			result: ScorecardResult{
+				Repo: RepoInfo{
+					Name:      "foo",
+					CommitSHA: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
+				},
+				Scorecard: ScorecardInfo{
+					Version:   "1.2.3",
+					CommitSHA: "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
+				},
+				Date: time.Date(2024, time.February, 1, 13, 48, 0, 0, time.UTC),
+				Findings: []finding.Finding{
+					{
+						Probe:   "check for X",
+						Outcome: finding.OutcomePositive,
+						Message: "found X",
+						Location: &finding.Location{
+							Path: "some/path/to/file",
+							Type: finding.FileTypeText,
+						},
+					},
+					{
+						Probe:   "check for Y",
+						Outcome: finding.OutcomeNegative,
+						Message: "did not find Y",
+					},
+				},
+			},
+		},
+	}
+	// pretty print results so the test files are easier to read
+	opt := &ProbeResultOption{Indent: "    "}
+	for _, tt := range tests {
+		tt := tt
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+			expected, err := os.ReadFile(tt.expected)
+			if err != nil {
+				t.Fatalf("cannot read expected results file: %v", err)
+			}
+
+			var result bytes.Buffer
+			if err = tt.result.AsPJSON(&result, opt); err != nil {
+				t.Fatalf("AsPJSON: %v", err)
+			}
+
+			if diff := cmp.Diff(expected, result.Bytes()); diff != "" {
+				t.Errorf("results differ: %s", diff)
+			}
+		})
+	}
+}

pkg/scorecard_result.go

@@ -138,7 +138,8 @@ func FormatResults(
 	case options.FormatFJSON:
 		err = results.AsFJSON(opts.ShowDetails, log.ParseLevel(opts.LogLevel), doc, output)
 	case options.FormatPJSON:
-		err = results.AsPJSON(output)
+		var opts *ProbeResultOption
+		err = results.AsPJSON(output, opts)
 	case options.FormatRaw:
 		err = results.AsRawJSON(output)
 	default:

pkg/testdata/probe1.json

@@ -0,0 +1,27 @@
+{
+    "date": "2024-02-01",
+    "repo": {
+        "name": "foo",
+        "commit": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+    },
+    "scorecard": {
+        "version": "1.2.3",
+        "commit": "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"
+    },
+    "findings": [
+        {
+            "location": {
+                "path": "some/path/to/file",
+                "type": 3
+            },
+            "probe": "check for X",
+            "message": "found X",
+            "outcome": 12
+        },
+        {
+            "probe": "check for Y",
+            "message": "did not find Y",
+            "outcome": 0
+        }
+    ]
+}