1 files changed, 58 insertions, 0 deletions
diff --git a/identity/predicate_identity_test.go b/identity/predicate_identity_test.go
new file mode 100644
index 000000000..3a54dee75
--- /dev/null
+++ b/identity/predicate_identity_test.go
@@ -0,0 +1,58 @@
+// 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 provides ways to identify values in Hugo. Used for dependency tracking etc.
+package identity
+
+import (
+	"testing"
+
+	qt "github.com/frankban/quicktest"
+)
+
+func TestGlobIdentity(t *testing.T) {
+	c := qt.New(t)
+
+	gid := NewGlobIdentity("/a/b/*")
+
+	c.Assert(isNotDependent(gid, StringIdentity("/a/b/c")), qt.IsFalse)
+	c.Assert(isNotDependent(gid, StringIdentity("/a/c/d")), qt.IsTrue)
+	c.Assert(isNotDependent(StringIdentity("/a/b/c"), gid), qt.IsTrue)
+	c.Assert(isNotDependent(StringIdentity("/a/c/d"), gid), qt.IsTrue)
+}
+
+func isNotDependent(a, b Identity) bool {
+	f := NewFinder(FinderConfig{})
+	r := f.Contains(a, b, -1)
+	return r == 0
+}
+
+func TestPredicateIdentity(t *testing.T) {
+	c := qt.New(t)
+
+	isDependent := func(id Identity) bool {
+		return id.IdentifierBase() == "foo"
+	}
+	isDependency := func(id Identity) bool {
+		return id.IdentifierBase() == "baz"
+	}
+
+	id := NewPredicateIdentity(isDependent, isDependency)
+
+	c.Assert(id.IsProbablyDependent(StringIdentity("foo")), qt.IsTrue)
+	c.Assert(id.IsProbablyDependent(StringIdentity("bar")), qt.IsFalse)
+	c.Assert(id.IsProbablyDependent(id), qt.IsFalse)
+	c.Assert(id.IsProbablyDependent(NewPredicateIdentity(isDependent, nil)), qt.IsFalse)
+	c.Assert(id.IsProbablyDependency(StringIdentity("baz")), qt.IsTrue)
+	c.Assert(id.IsProbablyDependency(StringIdentity("foo")), qt.IsFalse)
+}