Improve minifier MIME type resolution

This commit also removes the deprecated `Suffix` from MediaType. Now use `Suffixes` and put the MIME type suffix in the type, e.g. `application/svg+xml`.

Fixes #5093

1 files changed, 6 insertions, 0 deletions

diff --git a/minifiers/minifiers_test.go b/minifiers/minifiers_test.go
index 6d72dc44e..a0f0f97b4 100644
--- a/minifiers/minifiers_test.go
+++ b/minifiers/minifiers_test.go
@@ -32,4 +32,10 @@ func TestNew(t *testing.T) {
 
 	assert.NoError(m.Minify(media.CSSType, &b, strings.NewReader("body { color: blue; }")))
 	assert.Equal("body{color:blue}", b.String())
+
+	b.Reset()
+
+	// RSS should be handled as XML
+	assert.NoError(m.Minify(media.RSSType, &b, strings.NewReader("<hello>  Hugo!   </hello>  ")))
+	assert.Equal("<hello>Hugo!</hello>", b.String())
 }