Start of tests.

.gitignore

@@ -1,8 +1,13 @@
 *.mo
 *.o
 src/ralcalc
+src/ralcalc_test
 po/*.po~
 po/*.pot~
 *.1
 dist/
 cov-int/
+*.gcda
+*.gcno
+coverage.info
+out/

Makefile

@@ -56,3 +56,8 @@ pottar : distclean
 
 	cd dist; tar -zcf ralcalc-man-pot.tar.gz ralcalc-man-pot
 
+test : all
+	make -C src test
+lcov : all
+	lcov --capture --directory src --output-file coverage.info
+	genhtml coverage.info --output-directory out

config.mk

@@ -3,8 +3,9 @@ VERSION=1.4.2
 MANCOUNTRIES=da en_GB es eu fr it nl pl pt pt_BR tr vi
 
 # Add "-DDEBUG" to CFLAGS for verbose debug output
-CFLAGS=-ggdb -Wall -O2
-LDFLAGS=-lm
+#COVERAGE=-coverage
+CFLAGS=-ggdb -Wall -O2 ${COVERAGE}
+LDFLAGS=-lm ${COVERAGE}
 
 CC=gcc
 INSTALL=install

src/Makefile

@@ -9,7 +9,7 @@ ralcalc_OBJS=$(ralcalc_SOURCES:.c=.o)
 
 .PHONY : all clean install uninstall
 
-all : ralcalc
+all : ralcalc ralcalc_test
 
 ralcalc : $(ralcalc_OBJS)
 	$(CC) -o $@ $^ $(LDFLAGS)
@@ -18,7 +18,7 @@ ralcalc : $(ralcalc_OBJS)
 	$(CC) -DVERSION=\"${VERSION}\" -DLOCALEDIR=\"${localedir}\" ${CFLAGS} -c $^
 
 clean :
-	-rm -f ralcalc *.o
+	-rm -f ralcalc *.o ralcalc_test *.gcda *.gcno
 
 install : ralcalc
 	$(INSTALL) -d ${DESTDIR}${prefix}/bin/
@@ -27,3 +27,11 @@ install : ralcalc
 
 uninstall :
 	-rm -f ${DESTDIR}${prefix}/bin/= ${DESTDIR}${prefix}/bin/ralcalc
+
+# Testing
+#
+ralcalc_test : test.o output.o
+	$(CC) -o $@ $^ $(LDFLAGS) -lcunit
+
+test : ralcalc_test
+	./ralcalc_test

src/test.c

@@ -0,0 +1,100 @@
+#include <CUnit/CUnit.h>
+#include <CUnit/Basic.h>
+
+#include "output.h"
+
+#define STR_SIZE 100
+
+struct output_test {
+	double value;
+	const char result[STR_SIZE];
+	char siPrefix;
+	int precision;
+};
+
+
+void TEST_output(void)
+{
+	struct output_test tests[] = {
+		{1e-22, "100y", '\0', -1},
+		{1e0, "1", '\0', -1},
+		{1e22, "10Z", '\0', -1},
+		{1.123456089, "1.12346", '\0', -1},
+		{1.123456089, "1", '\0', 0},
+		{1.123456089, "1.1", '\0', 2},
+		{1.123456089, "1.12", '\0', 3},
+		{1.123456089, "1.123", '\0', 4},
+		{1.123456089, "1.1235", '\0', 5},
+		{1.123456089, "1.12346", '\0', 6},
+		{1.123456089, "1.123456", '\0', 7},
+		{1.123456089, "1.1234561", '\0', 8},
+		{1.123456089, "1.12345609", '\0', 9},
+		{1.123456089, "1.123456089", '\0', 10},
+		{1.123456089, "1.123456089", '\0', 11},
+		{0.001, "1m", 'm', -1},
+		{-8.7e-4, "-870u", 'u', -1},
+		{8.7e-10, "0.87n", 'n', -1},
+		{3.141e24, "3.141Y", 'Y', -1},
+		{3.141e18, "3.141E", 'E', -1},
+		{3.141e15, "3.141P", 'P', -1},
+		{3.141e12, "3.141T", 'T', -1},
+		{3.141e9, "3.141G", 'G', -1},
+		{3.141e6, "3.141M", 'M', -1},
+		{3.141e3, "3.141k", 'k', -1},
+		{3.141e-21, "3.141z", 'z', -1},
+		{3.141e-18, "3.141a", 'a', -1},
+		{3.141e-15, "3.141f", 'f', -1},
+		{3.141e-12, "3.141p", 'p', -1},
+		{3.141e-9, "3.141n", 'n', -1}
+	};
+	int test_count = sizeof(tests)/sizeof(struct output_test);
+	int i;
+
+	char str[STR_SIZE];
+
+	for(i=0; i<test_count; i++){
+		doubleToString(tests[i].value, str, STR_SIZE, tests[i].siPrefix, tests[i].precision);
+		CU_ASSERT_STRING_EQUAL(str, tests[i].result);
+		if(strcmp(str, tests[i].result)){
+			printf("FAIL: %s %s\n", tests[i].result, str);
+		}
+	}
+}
+
+
+int init_tests(void)
+{
+	CU_pSuite test_suite = NULL;
+
+	test_suite = CU_add_suite("tests", NULL, NULL);
+	if(!test_suite){
+		printf("Error adding CUnit test suite.\n");
+		return 1;
+	}
+
+	if(!CU_add_test(test_suite, "output", TEST_output)){
+		printf("Error adding CUnit tests.\n");
+		return 1;
+	}
+	return 0;
+}
+
+
+int main(int argc, char *argv[])
+{
+	if(CU_initialize_registry() != CUE_SUCCESS){
+		printf("Error initializing CUnit registry.\n");
+		return 1;
+	}
+
+	if(init_tests()){
+		CU_cleanup_registry();
+		return 1;
+	}
+
+	CU_basic_set_mode(CU_BRM_VERBOSE);
+	CU_basic_run_tests();
+	CU_cleanup_registry();
+
+	return 0;
+}