add tests for writing generated report to file

Signed-off-by: Edmund Ochieng <[email protected]>

.gitignore

@@ -32,4 +32,7 @@ Dockerfile.cross
 *~
 
 # omit coverage files
-coverage.out
+coverage.out
+
+# omit generated reports
+report-info.*

cmd/report_test.go

@@ -177,6 +177,28 @@ func TestReport(t *testing.T) {
 			},
 			wantMetadata: expectedMetadata,
 		},
+		{
+			name: "Should pass writing output to yaml file",
+			args: []string{
+				"-w",
+				"-o",
+				"yaml",
+				string(apireportsummary.AnnotationsSummary),
+				"test/report.yaml",
+			},
+			wantErr: false,
+		},
+		{
+			name: "Should pass writing output to json file",
+			args: []string{
+				"-w",
+				"-o",
+				"json",
+				string(apireportsummary.AnnotationsSummary),
+				"test/report.yaml",
+			},
+			wantErr: false,
+		},
 		{
 			name: "Should pass for skip digest check",
 			args: []string{