Add build.UseResourceCacheWhen

Fixes #6993

config/commonConfig_test.go

@@ -0,0 +1,60 @@
+// Copyright 2020 The Hugo Authors. All rights reserved.
+//
+// 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 config
+
+import (
+	"errors"
+	"testing"
+
+	"github.com/gohugoio/hugo/common/herrors"
+
+	qt "github.com/frankban/quicktest"
+
+	"github.com/spf13/viper"
+)
+
+func TestBuild(t *testing.T) {
+	c := qt.New(t)
+
+	v := viper.New()
+	v.Set("build", map[string]interface{}{
+		"useResourceCacheWhen": "always",
+	})
+
+	b := DecodeBuild(v)
+
+	c.Assert(b.UseResourceCacheWhen, qt.Equals, "always")
+
+	v.Set("build", map[string]interface{}{
+		"useResourceCacheWhen": "foo",
+	})
+
+	b = DecodeBuild(v)
+
+	c.Assert(b.UseResourceCacheWhen, qt.Equals, "fallback")
+
+	c.Assert(b.UseResourceCache(herrors.ErrFeatureNotAvailable), qt.Equals, true)
+	c.Assert(b.UseResourceCache(errors.New("err")), qt.Equals, false)
+
+	b.UseResourceCacheWhen = "always"
+	c.Assert(b.UseResourceCache(herrors.ErrFeatureNotAvailable), qt.Equals, true)
+	c.Assert(b.UseResourceCache(errors.New("err")), qt.Equals, true)
+	c.Assert(b.UseResourceCache(nil), qt.Equals, true)
+
+	b.UseResourceCacheWhen = "never"
+	c.Assert(b.UseResourceCache(herrors.ErrFeatureNotAvailable), qt.Equals, false)
+	c.Assert(b.UseResourceCache(errors.New("err")), qt.Equals, false)
+	c.Assert(b.UseResourceCache(nil), qt.Equals, false)
+
+}