it('should append a value to the list', () => {
const headers = new HttpHeaders();
const second = headers.append('foo', 'bar');
const third = second.append('foo', 'baz');
expect(third.get('foo')).toEqual('bar');
expect(third.getAll('foo')).toEqual(['bar', 'baz']);
});
it('should keep the last value when initialized from an object', () => {
const headers = new HttpHeaders({
'foo': 'first',
'fOo': 'second',
});
expect(headers.getAll('foo')).toEqual(['second']);
});
it('should conform to spec', () => {
const httpHeaders = {
'Content-Type': 'image/jpeg',
'Accept-Charset': 'utf-8',
'X-My-Custom-Header': 'Zeke are cool',
};
const secondHeaders = new HttpHeaders(httpHeaders);
expect(secondHeaders.get('Content-Type')).toEqual('image/jpeg');
});
it('should clear all values and re-set for the provided key', () => {
const headers = new HttpHeaders({'foo': 'bar'});
expect(headers.get('foo')).toEqual('bar');
const second = headers.set('foo', 'baz');
expect(second.get('foo')).toEqual('baz');
const third = headers.set('fOO', 'bat');
expect(third.get('foo')).toEqual('bat');
});
it('should lazily append values', () => {
const src = new HttpHeaders();
const a = src.append('foo', 'a');
const b = a.append('foo', 'b');
const c = b.append('foo', 'c');
expect(src.getAll('foo')).toBeNull();
expect(a.getAll('foo')).toEqual(['a']);
expect(b.getAll('foo')).toEqual(['a', 'b']);
expect(c.getAll('foo')).toEqual(['a', 'b', 'c']);
});
it('should be case insensitive', () => {
const headers = new HttpHeaders({'foo': 'baz'});
expect(headers.has('foo')).toEqual(true);
const second = headers.delete('foo');
expect(second.has('foo')).toEqual(false);
const third = second.set('foo', 'baz');
expect(third.has('foo')).toEqual(true);
const fourth = third.delete('FOO');
expect(fourth.has('foo')).toEqual(false);
});
it('should be parsed by the constructor', () => {
const response = `Date: Fri, 20 Nov 2015 01:45:26 GMT\n` +
`Content-Type: application/json; charset=utf-8\n` +
`Transfer-Encoding: chunked\n` +
`Connection: keep-alive`;
const headers = new HttpHeaders(response);
expect(headers.get('Date')).toEqual('Fri, 20 Nov 2015 01:45:26 GMT');
expect(headers.get('Content-Type')).toEqual('application/json; charset=utf-8');
expect(headers.get('Transfer-Encoding')).toEqual('chunked');
expect(headers.get('Connection')).toEqual('keep-alive');
});
it('should return null if the header is not present', () => {
const headers = new HttpHeaders();
expect(headers.getAll('foo')).toEqual(null);
});
it('should be case insensitive', () => {
const headers = new HttpHeaders({foo: ['bar', 'baz']});
expect(headers.getAll('foo')).toEqual(['bar', 'baz']);
expect(headers.getAll('FOO')).toEqual(['bar', 'baz']);
});
it('should be case insensitive', () => {
const headers = new HttpHeaders({'foo': 'baz'});
expect(headers.get('foo')).toEqual('baz');
expect(headers.get('FOO')).toEqual('baz');
});
