example_route_test.go

Documentation: github.com/gorilla/mux

     1  package mux_test
     2  
     3  import (
     4  	"fmt"
     5  	"net/http"
     6  
     7  	"github.com/gorilla/mux"
     8  )
     9  
    10  // This example demonstrates setting a regular expression matcher for
    11  // the header value. A plain word will match any value that contains a
    12  // matching substring as if the pattern was wrapped with `.*`.
    13  func ExampleRoute_HeadersRegexp() {
    14  	r := mux.NewRouter()
    15  	route := r.NewRoute().HeadersRegexp("Accept", "html")
    16  
    17  	req1, _ := http.NewRequest("GET", "example.com", nil)
    18  	req1.Header.Add("Accept", "text/plain")
    19  	req1.Header.Add("Accept", "text/html")
    20  
    21  	req2, _ := http.NewRequest("GET", "example.com", nil)
    22  	req2.Header.Set("Accept", "application/xhtml+xml")
    23  
    24  	matchInfo := &mux.RouteMatch{}
    25  	fmt.Printf("Match: %v %q\n", route.Match(req1, matchInfo), req1.Header["Accept"])
    26  	fmt.Printf("Match: %v %q\n", route.Match(req2, matchInfo), req2.Header["Accept"])
    27  	// Output:
    28  	// Match: true ["text/plain" "text/html"]
    29  	// Match: true ["application/xhtml+xml"]
    30  }
    31  
    32  // This example demonstrates setting a strict regular expression matcher
    33  // for the header value. Using the start and end of string anchors, the
    34  // value must be an exact match.
    35  func ExampleRoute_HeadersRegexp_exactMatch() {
    36  	r := mux.NewRouter()
    37  	route := r.NewRoute().HeadersRegexp("Origin", "^https://example.co$")
    38  
    39  	yes, _ := http.NewRequest("GET", "example.co", nil)
    40  	yes.Header.Set("Origin", "https://example.co")
    41  
    42  	no, _ := http.NewRequest("GET", "example.co.uk", nil)
    43  	no.Header.Set("Origin", "https://example.co.uk")
    44  
    45  	matchInfo := &mux.RouteMatch{}
    46  	fmt.Printf("Match: %v %q\n", route.Match(yes, matchInfo), yes.Header["Origin"])
    47  	fmt.Printf("Match: %v %q\n", route.Match(no, matchInfo), no.Header["Origin"])
    48  	// Output:
    49  	// Match: true ["https://example.co"]
    50  	// Match: false ["https://example.co.uk"]
    51  }
    52
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