86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
#include "c_Test.h"
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#include "c_Digraph.h"
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#include "c_Topological.h"
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#include "c_VertexIdList.h"
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TEST_CASE(test_topological_sort_dag) {
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c_Digraph_t g;
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c_Digraph_Init(&g, 3, NULL);
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/* Construct a valid DAG:
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* 0 -> 1
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* 1 -> 2
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* 0 -> 2
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*/
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c_Digraph_AddEdge(&g, 0, 1);
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c_Digraph_AddEdge(&g, 1, 2);
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c_Digraph_AddEdge(&g, 0, 2);
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c_Topological_t topo;
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c_err_t err = c_Topological_Init(&topo, &g, 0);
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ASSERT_INT_EQ(C_SUCCESS, err);
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/* It must successfully identify the graph as a DAG */
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ASSERT_TRUE(c_Topological_HasOrder(&topo));
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c_VertexIdList_t result_order;
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c_VertexIdList_Init(&result_order, 0, 0);
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err = c_Topological_GetOrder(&topo, &result_order);
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ASSERT_INT_EQ(C_SUCCESS, err);
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ASSERT_INT_EQ(3, c_VertexIdList_GetSize(&result_order));
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/* Verify the sequence yields a valid dependency layout (0, 1, 2) */
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c_uint_t v0 = 0, v1 = 0, v2 = 0;
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c_VertexIdList_Get(&result_order, 0, &v0);
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c_VertexIdList_Get(&result_order, 1, &v1);
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c_VertexIdList_Get(&result_order, 2, &v2);
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ASSERT_LL_EQ(0, v0);
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ASSERT_LL_EQ(1, v1);
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ASSERT_LL_EQ(2, v2);
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c_VertexIdList_Destroy(&result_order);
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c_Topological_Destroy(&topo);
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c_Digraph_Destroy(&g);
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}
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TEST_CASE(test_topological_sort_cyclic_fail) {
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c_Digraph_t g;
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c_Digraph_Init(&g, 2, NULL);
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/* Construct a cyclic graph (0 -> 1 -> 0) */
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c_Digraph_AddEdge(&g, 0, 1);
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c_Digraph_AddEdge(&g, 1, 0);
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c_Topological_t topo;
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c_err_t err = c_Topological_Init(&topo, &g, &g.allocator);
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ASSERT_INT_EQ(C_SUCCESS, err);
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/* It should gracefully determine that no valid topological order exists */
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ASSERT_FALSE(c_Topological_HasOrder(&topo));
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c_VertexIdList_t result_order;
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c_VertexIdList_Init(&result_order, 0, 0);
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err = c_Topological_GetOrder(&topo, &result_order);
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ASSERT_INT_EQ(C_ERR_FAIL, err); /* Query must fail */
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c_VertexIdList_Destroy(&result_order);
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c_Topological_Destroy(&topo);
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c_Digraph_Destroy(&g);
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}
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int main(int argc, char** argv){
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TEST_START(c_NonrecursiveDFS Component Tests);
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// Execution list configurations
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RUN_TEST(test_topological_sort_dag);
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RUN_TEST(test_topological_sort_cyclic_fail);
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TEST_REPORT();
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RETURN_TEST_STATUS;
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}
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