1 files changed, 49 insertions, 0 deletions
diff --git a/src/go/collectors/go.d.plugin/pkg/matcher/doc_test.go b/src/go/collectors/go.d.plugin/pkg/matcher/doc_test.go
new file mode 100644
index 000000000..d04b39a54
--- /dev/null
+++ b/src/go/collectors/go.d.plugin/pkg/matcher/doc_test.go
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package matcher_test
+
+import "github.com/netdata/netdata/go/go.d.plugin/pkg/matcher"
+
+func ExampleNew_string_format() {
+	// create a string matcher, which perform full text match
+	m, err := matcher.New(matcher.FmtString, "hello")
+	if err != nil {
+		panic(err)
+	}
+	m.MatchString("hello")       // => true
+	m.MatchString("hello world") // => false
+}
+
+func ExampleNew_glob_format() {
+	// create a glob matcher, which perform wildcard match
+	m, err := matcher.New(matcher.FmtString, "hello*")
+	if err != nil {
+		panic(err)
+	}
+	m.MatchString("hello")       // => true
+	m.MatchString("hello world") // => true
+	m.MatchString("Hello world") // => false
+}
+
+func ExampleNew_simple_patterns_format() {
+	// create a simple patterns matcher, which perform wildcard match
+	m, err := matcher.New(matcher.FmtSimplePattern, "hello* !*world *")
+	if err != nil {
+		panic(err)
+	}
+	m.MatchString("hello")        // => true
+	m.MatchString("hello world")  // => true
+	m.MatchString("Hello world")  // => false
+	m.MatchString("Hello world!") // => false
+}
+
+func ExampleNew_regexp_format() {
+	// create a regexp matcher, which perform wildcard match
+	m, err := matcher.New(matcher.FmtRegExp, "[0-9]+")
+	if err != nil {
+		panic(err)
+	}
+	m.MatchString("1")  // => true
+	m.MatchString("1a") // => true
+	m.MatchString("a")  // => false
+}