54 lines
1.9 KiB
C
54 lines
1.9 KiB
C
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#include "c_Test.h"
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#include "c_EdgeWeightedDigraph.h"
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#include "c_EdgeWeightedDirectedCycle.h"
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#include "c_VertexIdList.h"
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TEST_CASE(test_edge_weighted_directed_cycle_detection) {
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c_EdgeWeightedDigraph_t g;
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c_err_t err = c_EdgeWeightedDigraph_Init(&g, 3, NULL);
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ASSERT_INT_EQ(C_SUCCESS, err);
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/* Construct a simple cyclic network loop topology:
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* 0 -> 1 (Weight: 1.5) [Edge ID: 0]
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* 1 -> 2 (Weight: 2.3) [Edge ID: 1]
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* 2 -> 0 (Weight: 0.8) [Edge ID: 2] -> Closes the cycle
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*/
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c_EdgeWeightedDigraph_AddEdge(&g, 0, 1, 1.5);
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c_EdgeWeightedDigraph_AddEdge(&g, 1, 2, 2.3);
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c_EdgeWeightedDigraph_AddEdge(&g, 2, 0, 0.8);
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c_EdgeWeightedDirectedCycle_t detector;
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err = c_EdgeWeightedDirectedCycle_Init(&detector, &g, &g.allocator);
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ASSERT_INT_EQ(C_SUCCESS, err);
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/* Assert that a cycle is captured */
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ASSERT_TRUE(c_EdgeWeightedDirectedCycle_HasCycle(&detector));
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c_VertexIdList_t extracted;
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c_VertexIdList_Init(&extracted, 0, 0);
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err = c_EdgeWeightedDirectedCycle_GetCycle(&detector, &extracted);
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ASSERT_INT_EQ(C_SUCCESS, err);
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/* The loop cycle size must match exactly 3 edge elements */
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c_size_t cycle_size = (c_size_t)c_VertexIdList_GetSize(&extracted);
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ASSERT_LL_EQ(3, cycle_size);
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/* Verify the extracted sequential edge tokens order matches forward travel steps */
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c_uint_t e0 = 0, e1 = 0, e2 = 0;
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c_VertexIdList_Get(&extracted, 0, &e0); ASSERT_LL_EQ(0, e0); /* Edge 0 (0->1) */
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c_VertexIdList_Get(&extracted, 1, &e1); ASSERT_LL_EQ(1, e1); /* Edge 1 (1->2) */
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c_VertexIdList_Get(&extracted, 2, &e2); ASSERT_LL_EQ(2, e2); /* Edge 2 (2->0) */
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c_VertexIdList_Destroy(&extracted);
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c_EdgeWeightedDirectedCycle_Destroy(&detector);
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c_EdgeWeightedDigraph_Destroy(&g);
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}
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int main(void) {
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TEST_START(EdgeWeightedDirectedCycle_Suite);
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RUN_TEST(test_edge_weighted_directed_cycle_detection);
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TEST_REPORT();
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RETURN_TEST_STATUS;
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}
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