98 lines
4.9 KiB
Java
98 lines
4.9 KiB
Java
package ch.usi.inf.sp.cfg;
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import org.junit.jupiter.api.Test;
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import static org.junit.jupiter.api.Assertions.*;
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/**
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* Tests ControlFlowGraphRenderer by
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* asking it to render simple, artificially generated CFGs.
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* The test is VERY WEAK.
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* That is, there are many bugs it will not discover.
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*/
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class ControlFlowGraphRendererTest {
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@Test
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public void renderEmptyControlFlowGraph() {
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ControlFlowGraph cfg = new ControlFlowGraph();
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String result = ControlFlowGraphRenderer.renderControlFlowGraph("THELABEL", cfg);
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//System.out.println(result);
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assertTrue(result.contains("THELABEL"), "must include the given label");
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assertTrue(result.startsWith("digraph "));
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assertTrue(result.contains("{"));
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assertTrue(result.contains("}"));
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assertTrue(result.contains("["), "must set properties of entry/exit nodes");
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assertTrue(result.contains("]"), "must set properties of entry/exit nodes");
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assertTrue(result.contains("label"), "must set label for graph, and for nodes");
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assertTrue(result.contains("-1"), "must contain entry node's ID: -1");
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assertTrue(result.contains("-2"), "must contain exit node's ID: -2");
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assertTrue(result.contains("shape"), "must set shape for entry/exit nodes");
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}
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@Test
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public void renderSingleBlockControlFlowGraph() {
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ControlFlowGraph cfg = new ControlFlowGraph();
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BasicBlock bb = new BasicBlock(99);
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bb.appendInstruction("THEINSTRUCTION");
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cfg.addNode(bb);
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cfg.addEntryEdge(bb);
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cfg.addExitEdge(bb);
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String result = ControlFlowGraphRenderer.renderControlFlowGraph("THELABEL", cfg);
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//System.out.println(result);
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assertTrue(result.contains("THELABEL"), "must include the given label");
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assertTrue(result.startsWith("digraph "));
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assertTrue(result.contains("{"));
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assertTrue(result.contains("}"));
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assertTrue(result.contains("["), "must set properties of entry/exit nodes");
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assertTrue(result.contains("]"), "must set properties of entry/exit nodes");
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assertTrue(result.contains("label"), "must set label for graph, and for nodes");
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assertTrue(result.contains("-1"), "must contain entry node's ID: -1");
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assertTrue(result.contains("-2"), "must contain exit node's ID: -2");
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assertTrue(result.contains("shape"), "must set shape for entry/exit nodes");
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assertTrue(result.contains("->"), "must contain an edge (->)");
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assertTrue(result.contains("99"), "must include the basic block's ID (99)");
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assertTrue(result.contains("THEINSTRUCTION"), "must contain THEINSTRUCTION in the label of the basic block");
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assertTrue(result.contains("record"), "must use a record shape for the basic block");
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}
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@Test
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public void renderTwoBlockControlFlowGraph() {
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ControlFlowGraph cfg = new ControlFlowGraph();
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BasicBlock bb1 = new BasicBlock(11);
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bb1.appendInstruction("I11.1");
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bb1.appendInstruction("I11.2");
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cfg.addNode(bb1);
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BasicBlock bb2 = new BasicBlock(22);
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bb2.appendInstruction("I22.1");
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bb2.appendInstruction("I22.2");
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cfg.addNode(bb2);
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cfg.addEntryEdge(bb1);
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cfg.addFallthroughEdge(bb1, bb2);
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cfg.addExitEdge(bb2);
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String result = ControlFlowGraphRenderer.renderControlFlowGraph("THELABEL", cfg);
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//System.out.println(result);
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assertTrue(result.contains("THELABEL"), "must include the given label");
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assertTrue(result.startsWith("digraph "));
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assertTrue(result.contains("{"));
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assertTrue(result.contains("}"));
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assertTrue(result.contains("["), "must set properties of entry/exit nodes");
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assertTrue(result.contains("]"), "must set properties of entry/exit nodes");
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assertTrue(result.contains("label"), "must set label for graph, and for nodes");
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assertTrue(result.contains("-1"), "must contain entry node's ID: -1");
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assertTrue(result.contains("-2"), "must contain exit node's ID: -2");
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assertTrue(result.contains("shape"), "must set shape for entry/exit nodes");
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assertTrue(result.contains("->"), "must contain an edge (->)");
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assertTrue(result.contains("11"), "must include the first basic block's ID (11)");
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assertTrue(result.contains("22"), "must include the second basic block's ID (22)");
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assertTrue(result.contains("I11.1"), "must contain instruction I11.1 in the label of the first basic block");
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assertTrue(result.contains("I11.2"), "must contain instruction I11.2 in the label of the first basic block");
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assertTrue(result.contains("I22.1"), "must contain instruction I22.1 in the label of the first basic block");
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assertTrue(result.contains("I22.2"), "must contain instruction I22.2 in the label of the first basic block");
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assertTrue(result.contains("record"), "must use a record shape for the basic block");
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}
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} |