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# Cgreen Cheat Sheet
## Pre-amble
#include <cgreen/cgreen.h>
#include <cgreen/mocks.h>
Describe( <sut> );
BeforeEach( <sut> ) {}
AfterEach( <sut> ) {}
## A test
Ensure( <sut>, <test_name> ) {
assert_that( <expression> );
assert_that( <expression>, <constraint> );
assert_that_double(...);
}
## Constraints
is_true
is_false
is_null
is_non_null
is_equal_to( <value> )
is_equal_to_hex( <value> )
is_not_equal_to( <value> )
is_greater_than( <value> )
is_less_than( <value> )
### Structs and general data
is_equal_to_contents_of( <pointer>, <size> )
is_not_equal_to_contents_of( <pointer>, <size> )
### Strings
is_equal_to_string( <value> )
is_not_equal_to_string( <value> )
contains_string( <value> )
does_not_contain_string( <value> )
begins_with_string( <value> )
does_not_begin_with_string( <value> )
ends_with_string( <value> )
does_not_end_with_string( <value> )
### Floating point values (Doubles)
is_equal_to_double( <value> )
is_not_equal_to_double( <value> )
is_less_than_double( <value> )
is_greater_than_double( <value> )
significant_figures_for_assert_double_are( <figures> )
## Mocks
<qualifiers> <function_name> ( <parameters> ) {
mock( <parameters> );
mock( box_double( <parameter> ) );
return ( <type> ) mock( <parameters> );
return mock_double( <parameters> );
}
Ensure( <sut> ) {
expect(<function> {, when(<parameter>, <constraint> ) }
[, <returns> ]
[, times( <n> ) ] );
always_expect(...);
never_expect(...);
}
cgreen_mocks_are( strict_mocks | loose_mocks | learning_mocks );
### Returns
will_return( <value> )
will_return_double( <value> )
will_return_by_value( <value>, <size> )
with_side_effect( <function>, <pointer_to_data> )
will_set_contents_of_parameter( <parameter_name>, <value>, <size> )
## C++
namespace cgreen;
assert_throws( <exception>, <expression>);
## Minimal Makefile
all: $(UNIT)_tests.so
cgreen-runner $^
$(UNIT)_tests.so: $(UNIT)_tests.o $(UNIT).o
$(CC) -shared -o $@ $^ -lcgreen
%.o: %.c
$(CC) $(CFLAGS) -fPIC -c -o $@ $^
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