handling multiple separators (#650)

# Description
Generator would break with the [new DBaaS enums for
Datadog](https://github.com/exoscale/dbaas-api/blob/40b1ba53298095740a736f55905f3e4aff62a542/modules/dbaas-schemas/resources/schemas/dbaas-api.edn#L2562)

```clojure
  :enum-datadog-site
  #{"us3.datadoghq.com"
    "ddog-gov.com"
    "datadoghq.eu"
    "us5.datadoghq.com"
    "ap1.datadoghq.com"
    "datadoghq.com"}
```
For the entry "ddog-gov.com" the existing code considers only one
separator and it generates
```go
EnumDatadogSiteDdogGov.com      EnumDatadogSite = "ddog-gov.com"
```

With these changes it would generate 
```go
EnumDatadogSiteDdogGovCom      EnumDatadogSite = "ddog-gov.com"
```

## Checklist
(For exoscale contributors)

* [x] Changelog updated (under *Unreleased* block)
* [x] For a new resource or new attributes: test added/updated

---------

Co-authored-by: Philipp Sauter <philipp.sauter@exoscale.ch>

CHANGELOG.md

@@ -5,6 +5,7 @@ Unreleased
 ----------
 
 - generate_v3: replace deprecated ::set-output #647 
+- generate_v3: handle multiple separators #650
 
 3.1.1
 ----------

Makefile

@@ -1,4 +1,4 @@
-GO_MK_REF := v2.0.0
+GO_MK_REF := v2.0.2
 
 # make go.mk a dependency for all targets
 .EXTRA_PREREQS = go.mk

request_test.go

@@ -96,7 +96,7 @@ func TestRequest(t *testing.T) {
 	}
 	resp, err := cs.Request(req)
 	if err != nil {
-		t.Fatalf(err.Error())
+		t.Fatal(err.Error())
 	}
 	apis := resp.(*ListAPIsResponse)
 	if apis.Count != 1 {

v3/generator/helpers/helpers_test.go

@@ -13,6 +13,30 @@ func TestToCamel(t *testing.T) {
 	require.Equal(t, "Test", ToCamel("test"))
 	require.Equal(t, "", ToCamel("."))
 	require.Equal(t, "TestFoo", ToCamel("test...foo"))
+
+	// trimming
+	require.Equal(t, "Test", ToCamel("---test"))
+	require.Equal(t, "Test", ToCamel("test___"))
+	require.Equal(t, "Test", ToCamel(".-_test_-."))
+	require.Equal(t, "Test", ToCamel("  test  "))
+	require.Equal(t, "Test", ToCamel(" .-_test_-. "))
+
+	// splitting
+	require.Equal(t, "TestFooBarBaz", ToCamel("test-foo_bar.baz"))
+	require.Equal(t, "TestFooBar", ToCamel("test--_foo..bar"))
+	require.Equal(t, "TESTFooBAR", ToCamel("TEST-Foo-BAR"))
+	require.Equal(t, "Test123Foo", ToCamel("test-123-foo"))
+	require.Equal(t, "123", ToCamel("1-2-3"))
+
+	// trimming and splitting
+	require.Equal(t, "TrimMixedSeparators", ToCamel("-_. trim-mixed/separators ._-"))
+
+	// Acronym handling
+	require.Equal(t, "HandleXMLHTTPRequest", ToCamel("handle-xml-http-request"))
+	require.Equal(t, "ParseJSONAPI", ToCamel("parse_json_api"))
+	require.Equal(t, "NewURLForID", ToCamel("new-url-for-id"))
+	require.Equal(t, "SupportSQLQueries", ToCamel("support-sql-queries"))
+
 }
 
 func TestToLowerCamel(t *testing.T) {