Graph

2026-09-07 18:48:16 +08:00
parent 1564716731
commit c945aa211f
138 changed files with 10337 additions and 150 deletions
@@ -0,0 +1,57 @@
+#include "c_Test.h"
+#include "c_Digraph.h"
+#include "c_KosarajuSharirSCC.h"
+
+TEST_CASE(test_kosaraju_sharir_scc_clustering) {
+    c_Digraph_t g;
+    c_err_t err = c_Digraph_Init(&g, 5, NULL);
+    ASSERT_INT_EQ(C_SUCCESS, err);
+
+    /* Construct a graph topology with 2 separate SCC groups:
+     * Component 1 (Loop group): 0 -> 1 -> 2 -> 0
+     * Bridge link exiting out:  2 -> 3
+     * Component 2 (Loop group): 3 -> 4 -> 3
+     */
+    c_Digraph_AddEdge(&g, 0, 1);
+    c_Digraph_AddEdge(&g, 1, 2);
+    c_Digraph_AddEdge(&g, 2, 0);
+
+    c_Digraph_AddEdge(&g, 2, 3); /* Bridge connection */
+
+    c_Digraph_AddEdge(&g, 3, 4);
+    c_Digraph_AddEdge(&g, 4, 3);
+
+    c_KosarajuSharirSCC_t scc;
+    err = c_KosarajuSharirSCC_Init(&scc, &g, 0);
+    ASSERT_INT_EQ(C_SUCCESS, err);
+
+    /* Total strong connected component clusters count must equal exactly 2 */
+    ASSERT_LL_EQ(2, c_KosarajuSharirSCC_GetCount(&scc));
+
+    /* Verify cluster properties (0, 1, 2 must have the exact same group ID) */
+    ASSERT_TRUE(c_KosarajuSharirSCC_StronglyConnected(&scc, 0, 1));
+    ASSERT_TRUE(c_KosarajuSharirSCC_StronglyConnected(&scc, 1, 2));
+
+    /* 3 and 4 must have the exact same group ID */
+    ASSERT_TRUE(c_KosarajuSharirSCC_StronglyConnected(&scc, 3, 4));
+
+    /* Cross verification check (0 and 3 are isolated in different clusters) */
+    ASSERT_FALSE(c_KosarajuSharirSCC_StronglyConnected(&scc, 0, 3));
+
+    c_KosarajuSharirSCC_Destroy(&scc);
+    c_Digraph_Destroy(&g);
+}
+
+
+int main(int argc, char** argv){
+    TEST_START(c_NonrecursiveDFS Component Tests);
+
+    // Execution list configurations
+    RUN_TEST(test_kosaraju_sharir_scc_clustering);
+
+    TEST_REPORT();
+
+    RETURN_TEST_STATUS;
+
+    return 0;
+}