feat: p0 and p1

search/test_cases/q4/astar_0.test

@@ -0,0 +1,39 @@
+class: "GraphSearchTest"
+algorithm: "aStarSearch"
+
+diagram: """
+          C
+          ^
+          | 2
+     2    V   4 
+*A <----> B -----> [H]
+          | 
+     1.5  V  2.5
+ G <----- D -----> E
+          |
+        2 | 
+          V
+         [F]
+
+A is the start state, F and H is the goal.  Arrows mark possible state 
+transitions.  The number next to the arrow is the cost of that transition.
+"""
+# The following section specifies the search problem and the solution.
+# The graph is specified by first the set of start states, followed by
+# the set of goal states, and lastly by the state transitions which are
+# of the form: 
+#      <start state> <actions> <end state> <cost>
+graph: """
+start_state: A
+goal_states: H F
+A Right B 2.0
+B Right H 4.0
+B Down D 1.0
+B Up C 2.0
+B Left A 2.0
+C Down B 2.0
+D Right E 2.5
+D Down F 2.0
+D Left G 1.5
+"""
+