Add js.Batch

Fixes #12626
Closes #7499
Closes #9978
Closes #12879
Closes #13113
Fixes #13116

resources/resource/resources_test.go

@@ -0,0 +1,122 @@
+// Copyright 2024 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 resource
+
+import (
+	"testing"
+
+	qt "github.com/frankban/quicktest"
+)
+
+func TestResourcesMount(t *testing.T) {
+	c := qt.New(t)
+	c.Assert(true, qt.IsTrue)
+
+	var m ResourceGetter
+	var r Resources
+
+	check := func(in, expect string) {
+		c.Helper()
+		r := m.Get(in)
+		c.Assert(r, qt.Not(qt.IsNil))
+		c.Assert(r.Name(), qt.Equals, expect)
+	}
+
+	checkNil := func(in string) {
+		c.Helper()
+		r := m.Get(in)
+		c.Assert(r, qt.IsNil)
+	}
+
+	// Misc tests.
+	r = Resources{
+		testResource{name: "/foo/theme.css"},
+	}
+
+	m = r.Mount("/foo", ".")
+	check("./theme.css", "/foo/theme.css")
+
+	// Relative target.
+	r = Resources{
+		testResource{name: "/a/b/c/d.txt"},
+		testResource{name: "/a/b/c/e/f.txt"},
+		testResource{name: "/a/b/d.txt"},
+		testResource{name: "/a/b/e.txt"},
+	}
+
+	m = r.Mount("/a/b/c", "z")
+	check("z/d.txt", "/a/b/c/d.txt")
+	check("z/e/f.txt", "/a/b/c/e/f.txt")
+
+	m = r.Mount("/a/b", "")
+	check("d.txt", "/a/b/d.txt")
+	m = r.Mount("/a/b", ".")
+	check("d.txt", "/a/b/d.txt")
+	m = r.Mount("/a/b", "./")
+	check("d.txt", "/a/b/d.txt")
+	check("./d.txt", "/a/b/d.txt")
+
+	m = r.Mount("/a/b", ".")
+	check("./d.txt", "/a/b/d.txt")
+
+	// Absolute target.
+	m = r.Mount("/a/b/c", "/z")
+	check("/z/d.txt", "/a/b/c/d.txt")
+	check("/z/e/f.txt", "/a/b/c/e/f.txt")
+	checkNil("/z/f.txt")
+
+	m = r.Mount("/a/b", "/z")
+	check("/z/c/d.txt", "/a/b/c/d.txt")
+	check("/z/c/e/f.txt", "/a/b/c/e/f.txt")
+	check("/z/d.txt", "/a/b/d.txt")
+	checkNil("/z/f.txt")
+
+	m = r.Mount("", "")
+	check("/a/b/c/d.txt", "/a/b/c/d.txt")
+	check("/a/b/c/e/f.txt", "/a/b/c/e/f.txt")
+	check("/a/b/d.txt", "/a/b/d.txt")
+	checkNil("/a/b/f.txt")
+
+	m = r.Mount("/a/b", "/a/b")
+	check("/a/b/c/d.txt", "/a/b/c/d.txt")
+	check("/a/b/c/e/f.txt", "/a/b/c/e/f.txt")
+	check("/a/b/d.txt", "/a/b/d.txt")
+	checkNil("/a/b/f.txt")
+
+	// Resources with relative paths.
+	r = Resources{
+		testResource{name: "a/b/c/d.txt"},
+		testResource{name: "a/b/c/e/f.txt"},
+		testResource{name: "a/b/d.txt"},
+		testResource{name: "a/b/e.txt"},
+		testResource{name: "n.txt"},
+	}
+
+	m = r.Mount("a/b", "z")
+	check("z/d.txt", "a/b/d.txt")
+	checkNil("/z/d.txt")
+}
+
+type testResource struct {
+	Resource
+	name string
+}
+
+func (r testResource) Name() string {
+	return r.name
+}
+
+func (r testResource) NameNormalized() string {
+	return r.name
+}