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#include <cgreen/cgreen.h>
#include <cgreen/mocks.h>
char *read_paragraph(int (*read)(void *), void *stream);
static int stream_stub(void *stream) {
return (int)mock(stream);
}
Describe(ParagraphReader);
BeforeEach(ParagraphReader) {}
AfterEach(ParagraphReader) {}
Ensure(ParagraphReader, gives_null_when_reading_empty_stream) {
always_expect(stream_stub, will_return(EOF)); // <1>
assert_that(read_paragraph(&stream_stub, NULL), is_null);
}
Ensure(ParagraphReader, gives_one_character_line_for_one_character_stream) {
expect(stream_stub, will_return('a'));
expect(stream_stub, will_return(EOF));
char *line = read_paragraph(&stream_stub, NULL);
assert_that(line, is_equal_to_string("a"));
free(line);
}
Ensure(ParagraphReader, gives_one_word_line_for_one_word_stream) {
expect(stream_stub, will_return('t'));
expect(stream_stub, will_return('h'));
expect(stream_stub, will_return('e'));
always_expect(stream_stub, will_return(EOF));
assert_that(read_paragraph(&stream_stub, NULL), is_equal_to_string("the"));
}
Ensure(ParagraphReader, drops_line_ending_from_word_and_stops) {
expect(stream_stub, will_return('t'));
expect(stream_stub, will_return('h'));
expect(stream_stub, will_return('e'));
expect(stream_stub, will_return('\n'));
assert_that(read_paragraph(&stream_stub, NULL), is_equal_to_string("the"));
}
Ensure(ParagraphReader, gives_empty_line_for_single_line_ending) {
expect(stream_stub, will_return('\n'));
assert_that(read_paragraph(&stream_stub, NULL), is_equal_to_string(""));
}
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