add more tests: mostly trivial checks

cache_test.go

@@ -24,4 +24,8 @@ func TestNopCache(t *testing.T) {
 	if ok != false {
 		t.Errorf("NopCache.Get returned ok = true, should always be false.")
 	}
+
+	// nothing to test on these methods other than to verify they exist
+	NopCache.Set("", []byte{})
+	NopCache.Delete("")
 }

data_test.go

@@ -16,6 +16,7 @@ package imageproxy
 
 import (
 	"net/http"
+	"net/url"
 	"testing"
 )
 
@@ -98,7 +99,7 @@ func TestParseOptions(t *testing.T) {
 		{"r90,fh,sc0ffee,png,q90,1x2,fv,fit", Options{1, 2, true, 90, true, true, 90, "c0ffee", false, "png", 0, 0, 0, 0, false}},
 
 		// all flags, in different orders with crop
-		{"q70,cx100,cw300,1x2,fit,cy200,r90,fv,ch400,fh,sc0ffee,png", Options{1, 2, true, 90, true, true, 70, "c0ffee", false, "png", 100, 200, 300, 400, false}},
+		{"q70,cx100,cw300,1x2,fit,cy200,r90,fv,ch400,fh,sc0ffee,png,sc,scaleUp", Options{1, 2, true, 90, true, true, 70, "c0ffee", true, "png", 100, 200, 300, 400, true}},
 		{"ch400,r90,cw300,fh,sc0ffee,png,cx100,q90,cy200,1x2,fv,fit", Options{1, 2, true, 90, true, true, 90, "c0ffee", false, "png", 100, 200, 300, 400, false}},
 
 		// all flags, in different orders with crop & different resizes
@@ -204,3 +205,19 @@ func TestNewRequest(t *testing.T) {
 		}
 	}
 }
+
+func TestNewRequest_BaseURL(t *testing.T) {
+	req, _ := http.NewRequest("GET", "/x/path", nil)
+	base, _ := url.Parse("https://example.com/")
+
+	r, err := NewRequest(req, base)
+	if err != nil {
+		t.Errorf("NewRequest(%v, %v) returned unexpected error: %v", req, base, err)
+	}
+
+	want := "https://example.com/path#0x0"
+	if got := r.String(); got != want {
+		t.Errorf("NewRequest(%v, %v) returned %q, want %q", req, base, got, want)
+	}
+
+}

imageproxy_test.go

@@ -195,6 +195,28 @@ func TestHostMatches(t *testing.T) {
 	}
 }
 
+func TestReferrerMatches(t *testing.T) {
+	hosts := []string{"a.test"}
+
+	tests := []struct {
+		referrer string
+		valid    bool
+	}{
+		{"", false},
+		{"%", false},
+		{"http://a.test/", true},
+		{"http://b.test/", false},
+	}
+
+	for _, tt := range tests {
+		r, _ := http.NewRequest("GET", "/", nil)
+		r.Header.Set("Referer", tt.referrer)
+		if got, want := referrerMatches(hosts, r), tt.valid; got != want {
+			t.Errorf("referrerMatches(%v, %v) returned %v, want %v", hosts, r, got, want)
+		}
+	}
+}
+
 func TestValidSignature(t *testing.T) {
 	key := []byte("c0ffee")
 
@@ -348,6 +370,10 @@ func TestProxy_ServeHTTP(t *testing.T) {
 		{"/http://good.test/nocontent", http.StatusNoContent},       // non-OK response
 		{"/100/http://good.test/png", http.StatusOK},
 		{"/100/http://good.test/plain", http.StatusForbidden}, // non-image response
+
+		// health-check URLs
+		{"/", http.StatusOK},
+		{"/health-check", http.StatusOK},
 	}
 
 	for _, tt := range tests {