Add test cases for GetBoolFlagWithFallback() to env_test.go

Signed-off-by: David Wu <155603967+david-wu-octopus@users.noreply.github.com>

util/config/env_test.go

@@ -146,3 +146,15 @@ func TestFlagWithEqualSign(t *testing.T) {
 
 	assert.Equal(t, "bar", GetFlag("foo", ""))
 }
+
+func TestBoolFlagWithFallbackUnused(t *testing.T) {
+	loadOpts(t, "--foo")
+
+	assert.True(t, GetBoolFlagWithFallback("foo", false))
+}
+
+func TestBoolFlagWithFallbackUsed(t *testing.T) {
+	loadOpts(t, "--foo")
+
+	assert.True(t, GetBoolFlagWithFallback("bar", true))
+}