Concurrency

tests/build/graph_test.d

@@ -0,0 +1,35 @@
+/// Unit tests for the dependency graph construction.
+///
+/// Tests DAG building from AST rules, cycle detection, and
+/// topological ordering.
+module antelope.tests.build.graph_test;
+
+import antelope.build.graph;
+import antelope.build.target;
+
+/// Test constructing a simple linear dependency graph.
+unittest
+{
+    Target[] targets = [
+        Target("all", TargetKind.phony, ["hello"], []),
+        Target("hello", TargetKind.file, ["hello.o"], []),
+        Target("hello.o", TargetKind.file, ["hello.c"], []),
+        Target("hello.c", TargetKind.file, [], []),
+    ];
+
+    auto graph = DependencyGraph.fromTargets(targets);
+    assert(graph.nodes.length == 4);
+}
+
+/// Test cycle detection.
+unittest
+{
+    Target[] targets = [
+        Target("a", TargetKind.file, ["b"], []),
+        Target("b", TargetKind.file, ["c"], []),
+        Target("c", TargetKind.file, ["a"], []),
+    ];
+
+    auto graph = DependencyGraph.fromTargets(targets);
+    assert(graph.hasCycle());
+}