diff --git a/P03_Bounding_Box/bounding-box/Makefile b/P03_Bounding_Box/bounding-box/Makefile
new file mode 100644
index 0000000..caa3e7e
--- /dev/null
+++ b/P03_Bounding_Box/bounding-box/Makefile
@@ -0,0 +1,8 @@
+SNP_SHARED_MAKEFILE := $(if $(SNP_SHARED_MAKEFILE),$(SNP_SHARED_MAKEFILE),"~/snp/shared.mk")
+
+TARGET := bin/boundinbox
+SOURCES := src/main.c
+TSTSOURCES := tests/tests.c
+LIBS := -lm
+
+include $(SNP_SHARED_MAKEFILE)
diff --git a/P03_Bounding_Box/bounding-box/mainpage.dox b/P03_Bounding_Box/bounding-box/mainpage.dox
new file mode 100644
index 0000000..c142211
--- /dev/null
+++ b/P03_Bounding_Box/bounding-box/mainpage.dox
@@ -0,0 +1,8 @@
+/**
+ * @mainpage SNP - P03 Calculate bounding box
+ *
+ * @section Purpose
+ *
+ * This is a lab to calculate the bounding box of some triangle and to compare the boxes
+ *
+ */
diff --git a/P03_Bounding_Box/bounding-box/src/main.c b/P03_Bounding_Box/bounding-box/src/main.c
new file mode 100644
index 0000000..e66f245
--- /dev/null
+++ b/P03_Bounding_Box/bounding-box/src/main.c
@@ -0,0 +1,209 @@
+/* ----------------------------------------------------------------------------
+ * -- _____ ______ _____ -
+ * -- |_ _| | ____|/ ____| -
+ * -- | | _ __ | |__ | (___ Institute of Embedded Systems -
+ * -- | | | '_ \| __| \___ \ Zuercher Hochschule Winterthur -
+ * -- _| |_| | | | |____ ____) | (University of Applied Sciences) -
+ * -- |_____|_| |_|______|_____/ 8401 Winterthur, Switzerland -
+ * ----------------------------------------------------------------------------
+ */
+/**
+ * @file
+ * @brief Lab P03 weekday
+ */
+#include
+#include
+#include
+#include
+
+
+/// @brief point of two coordinate axes
+// BEGIN-STUDENTS-TO-ADD-CODE
+
+
+
+// END-STUDENTS-TO-ADD-CODE
+
+/// @brief box with an origin point and a dimension w and h
+// BEGIN-STUDENTS-TO-ADD-CODE
+
+
+
+// END-STUDENTS-TO-ADD-CODE
+
+/// @brief triangle given by three points a, b, and c
+// BEGIN-STUDENTS-TO-ADD-CODE
+
+
+
+// END-STUDENTS-TO-ADD-CODE
+
+/**
+ * @brief Compares two double values with a given hard coded tolerance.
+ * @param [in] a the first value
+ * @param [in] b the second value
+ * @returns 0 if fabs(a-b) <= tolerance, -1 if a < b, 1 otherwise
+ * @remark the tolerance is expected to be 0.05 (internally hard coded)
+ */
+// BEGIN-STUDENTS-TO-ADD-CODE
+
+
+
+// END-STUDENTS-TO-ADD-CODE
+
+
+/**
+ * @brief Compares two box parameters for their area (w * h of the box).
+ * @param [in] a the first box
+ * @param [in] b the second box
+ * @returns the return value from compare_double() when given the areas of both boxes as parameter to compare_double()
+ */
+// BEGIN-STUDENTS-TO-ADD-CODE
+
+
+
+// END-STUDENTS-TO-ADD-CODE
+
+
+/**
+ * @brief Compares the area of the parameter against 0.
+ * @param [in] box the box to check against area 0
+ * @returns compare_double() == 0 with the boxes area and 0 as parameters
+ */
+// BEGIN-STUDENTS-TO-ADD-CODE
+
+
+
+// END-STUDENTS-TO-ADD-CODE
+
+
+/**
+ * @brief Calculates the bounding box of a triangle
+ * @param [in] t the trinagle for which the baounding box is to be calculated
+ * @returns the bounding box of the triangle
+ * @remark calculates first the point with the minimum x and y of the triangle's points,
+ * plus as second point the one with the max coordinates of all points
+ * @remark the minial point is the origin of the bounding box, the width and hight is the x/y delta of the two points
+ *
+ */
+// BEGIN-STUDENTS-TO-ADD-CODE
+
+
+
+// END-STUDENTS-TO-ADD-CODE
+
+
+// forward declaration of used functions in main()
+static box_t get_match(box_t board, triangle_t t);
+static triangle_t triangle_rotate(triangle_t t, double degree);
+static void write_data(box_t board, triangle_t t, int degree);
+
+
+/**
+ * @brief main function
+ * @param argc [in] number of entries in argv
+ * @param argv [in] program name plus command line arguments
+ * @returns returns success if valid date is given, failure otherwise
+ */
+int main(int argc, const char *argv[])
+{
+ int x1, x2, x3, y1, y2, y3;
+ if (argc < 2 || sscanf(argv[1], "%d/%d-%d/%d-%d/%d", &x1, &y1, &x2, &y2, &x3, &y3) != 6) {
+ fprintf(stderr, "Usage: %s x1/y1-x2/y2-x3/y3\ne.g. 0/0-100/0-50/50\n", argv[0]);
+ return EXIT_FAILURE;
+
+ }
+
+ box_t board = { { 0, 0 }, 100, 200 };
+
+ // rotate the triangle in steps of 1 degree to find the "best position" of the triangle in the board
+ triangle_t t = { { x1, y1 }, { x2, y2 }, { x3, y3 } };
+ int degree_best = -1;
+ box_t best;
+ for(int degree = 0; degree < 360; degree++) {
+ box_t match = get_match(board, triangle_rotate(t, degree));
+ if (!is_zero_area(match)) {
+ if (degree_best == -1 || compare_area(match, best) < 0) {
+ degree_best = degree;
+ best = match;
+ }
+ }
+ }
+
+ // write as tabular file
+ write_data(board, t, degree_best);
+
+ return EXIT_SUCCESS;
+}
+
+
+/****************** internal functions ********************/
+
+// forward declarations
+static point_t point_rotate(point_t p, double degree);
+static point_t point_move(point_t p, double dx, double dy);
+static triangle_t triangle_move(triangle_t t, double dx, double dy);
+
+
+static box_t get_match(box_t board, triangle_t t)
+{
+ box_t b = triangle_bounding_box(t);
+ if (compare_double(board.w, b.w) < 0) return (box_t){ board.p, 0, 0 };
+ if (compare_double(board.h, b.h) < 0) return (box_t){ board.p, 0, 0 };
+ return (box_t){ board.p, b.w, b.h };
+}
+
+static triangle_t triangle_rotate(triangle_t t, double degree)
+{
+ return (triangle_t){ point_rotate(t.a, degree), point_rotate(t.b, degree), point_rotate(t.c, degree) };
+}
+
+static triangle_t triangle_move(triangle_t t, double dx, double dy)
+{
+ return (triangle_t){ point_move(t.a, dx, dy), point_move(t.b, dx, dy), point_move(t.c, dx, dy) };
+}
+
+static point_t point_rotate(point_t p, double degree)
+{
+ double rad = fmod(degree, 360.0) * acos(-1.0) / 180.0;
+ double s = sin(rad);
+ double c = cos(rad);
+
+ return (point_t){ c*p.x - s*p.y, s*p.x + c*p.y };
+}
+
+static point_t point_move(point_t p, double dx, double dy)
+{
+ return (point_t) { p.x+dx, p.y+dy };
+}
+
+static void write_data(box_t board, triangle_t t, int degree)
+{
+ double border = 10.0;
+ double gap = 2*border;
+
+ // move board to origin
+ board.p.x = 0.0;
+ board.p.y = 0.0;
+
+ // move original triangle to above the board
+ box_t tbb = triangle_bounding_box(t);
+ t = triangle_move(t, -tbb.p.x, -tbb.p.y + board.h + gap);
+ tbb.p.x = 0.0;
+ tbb.p.y = board.h + gap;
+
+ // view box
+ box_t view = { { -border, -border }, fmax(board.w, tbb.w) + 2 * border, board.h + gap + tbb.h + 2 * border };
+ printf("viewbox:%.1f:%.1f:%.1f:%.1f\n", view.p.x, view.p.y, view.w, view.h);
+
+ printf("rect:%.1f:%.1f:%.1f:%.1f:%s\n", board.p.x, board.p.y, board.w, board.h, "gray");
+ printf("polygon:%.1f:%.1f:%.1f:%.1f:%.1f:%.1f:%s\n", t.a.x, t.a.y, t.b.x, t.b.y, t.c.x, t.c.y, "green");
+
+ // there was a match, show it
+ if (degree >= 0) {
+ triangle_t rotated = triangle_rotate(t, degree);
+ box_t rbb = triangle_bounding_box(rotated);
+ t = triangle_move(rotated, -rbb.p.x, -rbb.p.y); // move to origin
+ printf("polygon:%.1f:%.1f:%.1f:%.1f:%.1f:%.1f:%s\n", t.a.x, t.a.y, t.b.x, t.b.y, t.c.x, t.c.y, "yellow");
+ }
+}
diff --git a/P03_Bounding_Box/bounding-box/tab2svg.sh b/P03_Bounding_Box/bounding-box/tab2svg.sh
new file mode 100755
index 0000000..a74dbf6
--- /dev/null
+++ b/P03_Bounding_Box/bounding-box/tab2svg.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+
+#!/bin/bash
+
+# produces a crude HTML embedded SVG drawing from a tabular file (given on stdin) with columns separated by ":"
+# usage: tab2svg < inbut.txt > output.html
+
+awk $* -- '
+BEGIN {
+ FS=":" # field-separator: which character separats fields in a record (i.e. in a line)
+ print ""
+ print ""
+ print " "
+ print " SVG Data"
+ print " "
+ print " "
+}
+/^viewbox/ {
+ x = $2
+ y = $3
+ w = $4
+ h = $5
+}
+/^rect/ {
+ if (h > 0) {
+ printf " board = %dmm x %dmm\n
\n", $4, $5
+ printf " "
+ print " "
+ print ""
+}
+'
diff --git a/P03_Bounding_Box/bounding-box/tests/tests.c b/P03_Bounding_Box/bounding-box/tests/tests.c
new file mode 100755
index 0000000..51844a0
--- /dev/null
+++ b/P03_Bounding_Box/bounding-box/tests/tests.c
@@ -0,0 +1,109 @@
+/* ----------------------------------------------------------------------------
+ * -- _____ ______ _____ -
+ * -- |_ _| | ____|/ ____| -
+ * -- | | _ __ | |__ | (___ Institute of Embedded Systems -
+ * -- | | | '_ \| __| \___ \ Zuercher Hochschule Winterthur -
+ * -- _| |_| | | | |____ ____) | (University of Applied Sciences) -
+ * -- |_____|_| |_|______|_____/ 8401 Winterthur, Switzerland -
+ * ----------------------------------------------------------------------------
+ */
+/**
+ * @file
+ * @brief Test suite for the given package.
+ */
+#include
+#include
+#include
+#include
+#include
+#include
+#include "test_utils.h"
+
+#ifndef TARGET // must be given by the make file --> see test target
+#error missing TARGET define
+#endif
+
+/// @brief alias for EXIT_SUCCESS
+#define OK EXIT_SUCCESS
+/// @brief alias for EXIT_FAILURE
+#define FAIL EXIT_FAILURE
+
+/// @brief The name of the STDOUT text file.
+#define OUTFILE "stdout.txt"
+/// @brief The name of the STDERR text file.
+#define ERRFILE "stderr.txt"
+
+// setup & cleanup
+static int setup(void)
+{
+ remove_file_if_exists(OUTFILE);
+ remove_file_if_exists(ERRFILE);
+ return 0; // success
+}
+
+static int teardown(void)
+{
+ // Do nothing.
+ // Especially: do not remove result files - they are removed in int setup(void) *before* running a test.
+ return 0; // success
+}
+
+// tests
+static void test_no_match(void)
+{
+ // arrange
+ const char *out_txt[] = {
+ "viewbox:-10.0:-10.0:250.0:290.0\n",
+ "rect:0.0:0.0:100.0:200.0:gray\n",
+ "polygon:0.0:220.0:230.0:220.0:100.0:270.0:green\n",
+ };
+
+ // act & assert
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 0/0-230/0-100/50 >" OUTFILE " 2>" ERRFILE)), OK);
+ assert_lines(OUTFILE, out_txt, sizeof(out_txt)/sizeof(*out_txt));
+}
+
+static void test_initial_match(void)
+{
+ // arrange
+ const char *out_txt[] = {
+ "viewbox:-10.0:-10.0:120.0:340.0\n",
+ "rect:0.0:0.0:100.0:200.0:gray\n",
+ "polygon:0.0:220.0:100.0:220.0:100.0:320.0:green\n",
+ "polygon:0.0:0.0:100.0:0.0:100.0:100.0:yellow\n",
+ };
+
+ // act & assert
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 0/0-100/0-100/100 >" OUTFILE " 2>" ERRFILE)), OK);
+ assert_lines(OUTFILE, out_txt, sizeof(out_txt)/sizeof(*out_txt));
+}
+
+static void test_tight_match(void)
+{
+ // arrange
+ const char *out_txt[] = {
+ "viewbox:-10.0:-10.0:225.0:290.0\n",
+ "rect:0.0:0.0:100.0:200.0:gray\n",
+ "polygon:0.0:220.0:205.0:220.0:205.0:270.0:green\n",
+ "polygon:94.8:0.0:48.7:199.7:0.0:188.5:yellow\n",
+ };
+
+ // act & assert
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 0/0-205/0-205/50 >" OUTFILE " 2>" ERRFILE)), OK);
+ assert_lines(OUTFILE, out_txt, sizeof(out_txt)/sizeof(*out_txt));
+}
+
+
+/**
+ * @brief Registers and runs the tests.
+ * @returns success (0) or one of the CU_ErrorCode (>0)
+ */
+int main(void)
+{
+ // setup, run, teardown
+ TestMainBasic("lab test", setup, teardown
+ , test_no_match
+ , test_initial_match
+ , test_tight_match
+ );
+}
diff --git a/P03_Bounding_Box/wochentag-berechnung/Makefile b/P03_Bounding_Box/wochentag-berechnung/Makefile
new file mode 100644
index 0000000..b3a1fea
--- /dev/null
+++ b/P03_Bounding_Box/wochentag-berechnung/Makefile
@@ -0,0 +1,7 @@
+SNP_SHARED_MAKEFILE := $(if $(SNP_SHARED_MAKEFILE),$(SNP_SHARED_MAKEFILE),"~/snp/shared.mk")
+
+TARGET := bin/weekday
+SOURCES := src/main.c
+TSTSOURCES := tests/tests.c
+
+include $(SNP_SHARED_MAKEFILE)
diff --git a/P03_Bounding_Box/wochentag-berechnung/mainpage.dox b/P03_Bounding_Box/wochentag-berechnung/mainpage.dox
new file mode 100644
index 0000000..79fdc99
--- /dev/null
+++ b/P03_Bounding_Box/wochentag-berechnung/mainpage.dox
@@ -0,0 +1,8 @@
+/**
+ * @mainpage SNP - P03 Calculate the week day
+ *
+ * @section Purpose
+ *
+ * This is a lab to calculate the week day from a given Gregorian date.
+ *
+ */
diff --git a/P03_Bounding_Box/wochentag-berechnung/src/main.c b/P03_Bounding_Box/wochentag-berechnung/src/main.c
new file mode 100644
index 0000000..131f587
--- /dev/null
+++ b/P03_Bounding_Box/wochentag-berechnung/src/main.c
@@ -0,0 +1,121 @@
+ /* ----------------------------------------------------------------------------
+ * -- _____ ______ _____ -
+ * -- |_ _| | ____|/ ____| -
+ * -- | | _ __ | |__ | (___ Institute of Embedded Systems -
+ * -- | | | '_ \| __| \___ \ Zuercher Hochschule Winterthur -
+ * -- _| |_| | | | |____ ____) | (University of Applied Sciences) -
+ * -- |_____|_| |_|______|_____/ 8401 Winterthur, Switzerland -
+ * ----------------------------------------------------------------------------
+ */
+/**
+ * @file
+ * @brief Lab P03 weekday
+ */
+#include
+#include
+#include
+
+
+// *** TASK1: typedef enum types for month_t (Jan=1,...Dec} ***
+// BEGIN-STUDENTS-TO-ADD-CODE
+
+
+// END-STUDENTS-TO-ADD-CODE
+
+
+
+// *** TASK1: typedef struct for date_t ***
+// BEGIN-STUDENTS-TO-ADD-CODE
+
+
+// END-STUDENTS-TO-ADD-CODE
+
+
+
+// *** TASK2: typedef enum weekday_t (Sun=0, Mon, ...Sat) ***
+// BEGIN-STUDENTS-TO-ADD-CODE
+
+
+// END-STUDENTS-TO-ADD-CODE
+
+/**
+ * @brief TASK1: Checks if the given date is a leap year.
+ * @returns 0 = is not leap year, 1 = is leap year
+ */
+// BEGIN-STUDENTS-TO-ADD-CODE
+
+
+// END-STUDENTS-TO-ADD-CODE
+
+
+/**
+ * @brief TASK1: Calculates the length of the month given by the data parameter
+ * @returns 28, 29, 30, 31 if a valid month, else 0
+ */
+// BEGIN-STUDENTS-TO-ADD-CODE
+
+
+// END-STUDENTS-TO-ADD-CODE
+
+/**
+ * @brief TASK1: Checks if the given date is in the gregorian date range
+ * @returns 0 = no, 1 = yes
+ */
+// BEGIN-STUDENTS-TO-ADD-CODE
+
+
+// END-STUDENTS-TO-ADD-CODE
+
+
+/**
+ * @brief TASK1: Checks if the given date is a valid date.
+ * @returns 0 = is not valid date, 1 = is valid date
+ */
+// BEGIN-STUDENTS-TO-ADD-CODE
+
+
+// END-STUDENTS-TO-ADD-CODE
+
+
+/**
+ * @brief TASK2: calculated from a valid date the weekday
+ * @returns returns a weekday in the range Sun...Sat
+ */
+// BEGIN-STUDENTS-TO-ADD-CODE
+
+
+// END-STUDENTS-TO-ADD-CODE
+
+
+
+/**
+ * @brief TASK2: print weekday as 3-letter abreviated English day name
+ */
+// BEGIN-STUDENTS-TO-ADD-CODE
+
+
+// END-STUDENTS-TO-ADD-CODE
+
+/**
+ * @brief main function
+ * @param argc [in] number of entries in argv
+ * @param argv [in] program name plus command line arguments
+ * @returns returns success if valid date is given, failure otherwise
+ */
+int main(int argc, const char *argv[])
+{
+ // TASK1: parse the mandatory argument into a date_t variable and check if the date is valid
+ // BEGIN-STUDENTS-TO-ADD-CODE
+
+
+ // END-STUDENTS-TO-ADD-CODE
+
+
+ // TASK2: calculate the weekday and print it in this format: "%04d-%02d-%02d is a %s\n"
+ // BEGIN-STUDENTS-TO-ADD-CODE
+
+
+ // END-STUDENTS-TO-ADD-CODE
+
+ return EXIT_SUCCESS;
+}
diff --git a/P03_Bounding_Box/wochentag-berechnung/tests/tests.c b/P03_Bounding_Box/wochentag-berechnung/tests/tests.c
new file mode 100755
index 0000000..3a784db
--- /dev/null
+++ b/P03_Bounding_Box/wochentag-berechnung/tests/tests.c
@@ -0,0 +1,196 @@
+/* ----------------------------------------------------------------------------
+ * -- _____ ______ _____ -
+ * -- |_ _| | ____|/ ____| -
+ * -- | | _ __ | |__ | (___ Institute of Embedded Systems -
+ * -- | | | '_ \| __| \___ \ Zuercher Hochschule Winterthur -
+ * -- _| |_| | | | |____ ____) | (University of Applied Sciences) -
+ * -- |_____|_| |_|______|_____/ 8401 Winterthur, Switzerland -
+ * ----------------------------------------------------------------------------
+ */
+/**
+ * @file
+ * @brief Test suite for the given package.
+ */
+#include
+#include
+#include
+#include
+#include
+#include
+#include "test_utils.h"
+
+#ifndef TARGET // must be given by the make file --> see test target
+#error missing TARGET define
+#endif
+
+/// @brief alias for EXIT_SUCCESS
+#define OK EXIT_SUCCESS
+/// @brief alias for EXIT_FAILURE
+#define FAIL EXIT_FAILURE
+
+/// @brief The name of the STDOUT text file.
+#define OUTFILE "stdout.txt"
+/// @brief The name of the STDERR text file.
+#define ERRFILE "stderr.txt"
+
+// setup & cleanup
+static int setup(void)
+{
+ remove_file_if_exists(OUTFILE);
+ remove_file_if_exists(ERRFILE);
+ return 0; // success
+}
+
+static int teardown(void)
+{
+ // Do nothing.
+ // Especially: do not remove result files - they are removed in int setup(void) *before* running a test.
+ return 0; // success
+}
+
+static struct tm now()
+{
+ time_t t = time(NULL);
+ return *localtime(&t);
+}
+
+static const char* weekday_name(int wday)
+{
+ assert(0 <= wday && wday <= 6);
+ static const char* days[] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
+ return days[wday];
+}
+
+// tests
+static void test_task1_fail_no_arg(void)
+{
+ // arrange & act & assert
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " >" OUTFILE " 2>" ERRFILE)), FAIL);
+}
+
+static void test_task1_fail_not_gregorian(void)
+{
+ // arrange & act & assert
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 1291-08-01 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 1582-10-14 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 1583-10-14 >" OUTFILE " 2>" ERRFILE)), OK);
+}
+
+static void test_task1_fail_month_out_of_range(void)
+{
+ // arrange & act & assert
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-13-13 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-00-13 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-12-13 >" OUTFILE " 2>" ERRFILE)), OK);
+}
+
+static void test_task1_fail_day_out_of_range(void)
+{
+ // arrange & act & assert
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-01-32 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-01-31 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-02-30 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-02-29 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2019-02-29 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2019-02-28 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2019-02-29 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2019-02-28 >" OUTFILE " 2>" ERRFILE)), OK);
+}
+
+static void test_task1_fail_leap_year(void)
+{
+ // arrange & act & assert
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 1900-02-29 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 1900-02-28 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2000-02-30 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2000-02-29 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2001-02-29 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2001-02-28 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2004-02-30 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2004-02-29 >" OUTFILE " 2>" ERRFILE)), OK);
+}
+
+static void test_task1_valid_date(void)
+{
+ // arrange & act & assert
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-01-01 >" OUTFILE " 2>" ERRFILE)), OK);
+
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-01-31 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-02-29 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-03-31 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-04-30 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-05-31 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-06-30 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-07-31 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-08-31 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-09-30 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-10-31 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-11-30 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-12-31 >" OUTFILE " 2>" ERRFILE)), OK);
+
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-01-32 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-02-30 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-03-32 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-04-31 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-05-32 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-06-31 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-07-32 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-08-32 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-09-31 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-10-32 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-11-31 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 2020-12-32 >" OUTFILE " 2>" ERRFILE)), FAIL);
+}
+
+static void test_task2_start_gregorian(void)
+{
+ // arrange & act & assert
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 1581-10-14 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 1581-10-15 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 1582-10-14 >" OUTFILE " 2>" ERRFILE)), FAIL);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 1582-10-15 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 1583-10-14 >" OUTFILE " 2>" ERRFILE)), OK);
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 1583-10-15 >" OUTFILE " 2>" ERRFILE)), OK);
+
+ const char *out_txt[] = { "1582-10-15 is a Fri\n" };
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(XSTR(TARGET) " 1582-10-15 >" OUTFILE " 2>" ERRFILE)), OK);
+ assert_lines(OUTFILE, out_txt, sizeof(out_txt)/sizeof(*out_txt));
+}
+
+static void test_task2_today(void)
+{
+ // arrange
+ const size_t SIZE = 1000;
+ char command[SIZE];
+ struct tm t = now();
+ snprintf(command, SIZE, "%s %04d-%02d-%02d 2>%s | tail -1 >%s", XSTR(TARGET), t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, ERRFILE, OUTFILE);
+
+ char buffer[SIZE];
+ snprintf(buffer, SIZE, "%04d-%02d-%02d is a %s\n", t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, weekday_name(t.tm_wday));
+ const char *out_txt[] = { buffer };
+ const char *err_txt[] = { NULL };
+
+ // act & assert
+ CU_ASSERT_EQUAL(WEXITSTATUS(system(command)), OK);
+ assert_lines(OUTFILE, out_txt, sizeof(out_txt)/sizeof(*out_txt));
+ assert_lines(ERRFILE, err_txt, sizeof(err_txt)/sizeof(*err_txt));
+}
+
+/**
+ * @brief Registers and runs the tests.
+ * @returns success (0) or one of the CU_ErrorCode (>0)
+ */
+int main(void)
+{
+ // setup, run, teardown
+ TestMainBasic("lab test", setup, teardown
+ , test_task1_fail_no_arg
+ , test_task1_fail_not_gregorian
+ , test_task1_fail_month_out_of_range
+ , test_task1_fail_day_out_of_range
+ , test_task1_fail_leap_year
+ , test_task1_valid_date
+ , test_task2_start_gregorian
+ , test_task2_today
+ );
+}