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133 lines
3.4 KiB
C
133 lines
3.4 KiB
C
#include <criterion/criterion.h>
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#include "vm_segment.h"
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static vm_segment *segment;
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static int length = 128;
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static void
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setup()
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{
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segment = vm_segment_create(length);
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}
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static void
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teardown()
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{
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vm_segment_free(segment);
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}
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TestSuite(vm_segment, .init = setup, .fini = teardown);
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Test(vm_segment, create) {
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int i;
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cr_assert_neq(segment, NULL);
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cr_assert_eq(segment->size, length);
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// Test that the memory chunk itself, plus the read and write
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// tables, are all zeroed out.
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for (i = 0; i < segment->size; i++) {
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cr_assert_eq(segment->memory[i], 0);
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cr_assert_eq(segment->read_table[i], NULL);
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cr_assert_eq(segment->write_table[i], NULL);
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}
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}
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Test(vm_segment, set) {
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int index = 0;
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vm_8bit value = 123;
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cr_assert_eq(vm_segment_set(segment, index, value), OK);
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cr_assert_eq(segment->memory[index], value);
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}
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Test(vm_segment, get) {
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int index = 0;
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vm_8bit value = 123;
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segment->memory[index] = value;
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cr_assert_eq(vm_segment_get(segment, index), value);
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}
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Test(vm_segment, copy) {
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vm_segment *src, *dest;
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src = vm_segment_create(length);
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dest = vm_segment_create(length);
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vm_segment_set(src, 0, 0xDE);
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vm_segment_set(src, 1, 0xAD);
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vm_segment_set(src, 2, 0xBE);
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vm_segment_set(src, 3, 0xEF);
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cr_assert_eq(vm_segment_copy(dest, src, 8, 0, 4), OK);
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cr_assert_eq(vm_segment_get(dest, 8), 0xDE);
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cr_assert_eq(vm_segment_get(dest, 9), 0xAD);
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cr_assert_eq(vm_segment_get(dest, 10), 0xBE);
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cr_assert_eq(vm_segment_get(dest, 11), 0xEF);
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vm_segment_free(src);
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vm_segment_free(dest);
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}
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Test(vm_segment, read_map)
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{
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// We use some trickery here; I don't want to go to the trouble of
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// defining a function for this test, so I am just passing in an
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// arbitrary pointer to junk. As long as the garbage-in, garbage-out
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// principle holds, we're golden.
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cr_assert_eq(vm_segment_read_map(segment, 123, (vm_segment_read_fn)456), OK);
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cr_assert_eq(vm_segment_read_map(segment, 321, (vm_segment_read_fn)456), ERR_OOB);
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cr_assert_eq(segment->read_table[123], (vm_segment_read_fn)456);
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}
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Test(vm_segment, write_map)
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{
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// See the read_map test for more details on the following trickery
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cr_assert_eq(vm_segment_write_map(segment, 123, (vm_segment_write_fn)456), OK);
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cr_assert_eq(vm_segment_write_map(segment, 321, (vm_segment_write_fn)456), ERR_OOB);
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cr_assert_eq(segment->write_table[123], (vm_segment_write_fn)456);
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}
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static vm_8bit
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read_fn(vm_segment *segment, size_t addr)
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{
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return 222;
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}
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Test(vm_segment, use_read_map)
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{
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size_t addr = 123;
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vm_segment_set(segment, addr, 111);
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cr_assert_eq(vm_segment_get(segment, addr), 111);
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vm_segment_read_map(segment, addr, read_fn);
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cr_assert_eq(vm_segment_get(segment, addr), 222);
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vm_segment_read_map(segment, addr, NULL);
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cr_assert_eq(vm_segment_get(segment, addr), 111);
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}
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void
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write_fn(vm_segment *segment, size_t addr, vm_8bit value)
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{
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segment->memory[addr+1] = value;
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}
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Test(vm_segment, use_write_map)
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{
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size_t addr = 123;
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vm_segment_set(segment, addr, 111);
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cr_assert_eq(vm_segment_get(segment, addr), 111);
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cr_assert_neq(vm_segment_get(segment, addr + 1), 111);
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vm_segment_write_map(segment, addr, write_fn);
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vm_segment_set(segment, addr, 111);
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cr_assert_eq(vm_segment_get(segment, addr), 111);
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cr_assert_eq(vm_segment_get(segment, addr + 1), 111);
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}
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