login_source: migrate to GORM and add tests (#6090)

* Use GORM in all write paths

* Migrate to GORM

* Fix lint errors

* Use GORM  to init table

* dbutil: make writer detect error

* Add more tests

* Rename to clearTables

* db: finish adding tests

* osutil: add tests

* Fix load source files path

2 files changed, 33 insertions, 0 deletions

diff --git a/internal/osutil/osutil.go b/internal/osutil/osutil.go
index 3af67570..b2205a46 100644
--- a/internal/osutil/osutil.go
+++ b/internal/osutil/osutil.go
@@ -17,6 +17,16 @@ func IsFile(path string) bool {
 	return !f.IsDir()
 }
 
+// IsDir returns true if given path is a directory, and returns false when it's
+// a file or does not exist.
+func IsDir(dir string) bool {
+	f, e := os.Stat(dir)
+	if e != nil {
+		return false
+	}
+	return f.IsDir()
+}
+
 // IsExist returns true if a file or directory exists.
 func IsExist(path string) bool {
 	_, err := os.Stat(path)
diff --git a/internal/osutil/osutil_test.go b/internal/osutil/osutil_test.go
index 8c45f5c0..ca2c75bf 100644
--- a/internal/osutil/osutil_test.go
+++ b/internal/osutil/osutil_test.go
@@ -33,6 +33,29 @@ func TestIsFile(t *testing.T) {
 	}
 }
 
+func TestIsDir(t *testing.T) {
+	tests := []struct {
+		path   string
+		expVal bool
+	}{
+		{
+			path:   "osutil.go",
+			expVal: false,
+		}, {
+			path:   "../osutil",
+			expVal: true,
+		}, {
+			path:   "not_found",
+			expVal: false,
+		},
+	}
+	for _, test := range tests {
+		t.Run("", func(t *testing.T) {
+			assert.Equal(t, test.expVal, IsDir(test.path))
+		})
+	}
+}
+
 func TestIsExist(t *testing.T) {
 	tests := []struct {
 		path   string