test: Authprovider test improvement (#1170)

pkg/common/oras/authprovider/authprovider_test.go

@@ -21,6 +21,8 @@ import (
 	"path/filepath"
 	"testing"
 	"time"
+
+	re "github.com/deislabs/ratify/errors"
 )
 
 const (
@@ -60,6 +62,51 @@ func (ap *TestAuthProvider) Provide(_ context.Context, _ string) (AuthConfig, er
 	}, nil
 }
 
+// Checks for creation of defaultAuthProvider with invalid config input
+func TestProvide_CreationOfAuthProvider_ExpectedResults(t *testing.T) {
+	var testProviderFactory defaultProviderFactory
+	tests := []struct {
+		name       string
+		configMap  map[string]interface{}
+		isNegative bool
+		expect     error
+	}{
+		{
+			name: "input type for unmarshal is unsupported",
+			configMap: map[string]interface{}{
+				"key1": 1,
+				"key2": true,
+				"key3": make(chan int),
+			},
+			isNegative: true,
+			expect:     re.ErrorCodeConfigInvalid,
+		},
+		{
+			name: "input type can not be transformed accordingly",
+			configMap: map[string]interface{}{
+				"Name": 1,
+			},
+			isNegative: true,
+			expect:     re.ErrorCodeConfigInvalid,
+		},
+		{
+			name: "successfully creation of authProvider",
+			configMap: map[string]interface{}{
+				"Name":       "sample",
+				"ConfigPath": "/tmp",
+			},
+			isNegative: false,
+			expect:     nil,
+		},
+	}
+	for _, testCase := range tests {
+		_, err := testProviderFactory.Create(AuthProviderConfig(testCase.configMap))
+		if testCase.isNegative != (err != nil) {
+			t.Errorf("Expected %v in case %v, but got %v", testCase.expect, testCase.name, err)
+		}
+	}
+}
+
 // Checks for correct credential resolution when external docker config
 // path is provided
 func TestProvide_ExternalDockerConfigPath_ExpectedResults(t *testing.T) {