Starting working on ambiguity exception

Author: moufmouf

src/SchemaAnalyzer.php

@@ -14,7 +14,7 @@
 
 /**
  * This class can analyze a database model.
- * In this class you will find:
+ * In this class you will find.
  *
  * - Functions to automatically detect **junction tables**
  * - Functions to compute the shortest path between 2 tables based on the relationships stored in the schema.
@@ -66,6 +66,7 @@ public function __construct(AbstractSchemaManager $schemaManager, Cache $cache =
     /**
      * Detect all junctions tables in the schema.
      * A table is a junction table if:
+     *
      * - it has exactly 2 foreign keys
      * - it has only 2 columns (or 3 columns if the third one is an autoincremented primary key).
      *
@@ -86,6 +87,7 @@ public function detectJunctionTables()
     /**
      * Returns true if $table is a junction table.
      * I.e:
+     *
      * - it must have exactly 2 foreign keys
      * - it must have only 2 columns (or 3 columns if the third one is an autoincremented primary key).
      *

src/ShortestPathAmbiguityException.php

@@ -0,0 +1,8 @@
+<?php
+namespace Mouf\Database\SchemaAnalyzer;
+
+
+class ShortestPathAmbiguityException extends SchemaAnalyzerException
+{
+
+}

tests/SchemaAnalyzerTest.php

@@ -259,5 +259,31 @@ public function testCache() {
         $r2 = $this->assertNotFalse($cache->fetch('mykey_shortest_role_right```role'));
         $this->assertTrue($r1 === $r2);
     }
+
+    /**
+     * @expectedException \Mouf\Database\SchemaAnalyzer\ShortestPathAmbiguityException
+     */
+    public function testAmbiguityException() {
+        $schema = $this->getBaseSchema();
+
+        $role_right = $schema->createTable("role_right");
+        $role_right->addColumn("role_id", "integer", array("unsigned" => true));
+        $role_right->addColumn("right_id", "integer", array("unsigned" => true));
+        $role_right->addForeignKeyConstraint($schema->getTable('role'), array("role_id"), array("id"), array("onUpdate" => "CASCADE"));
+        $role_right->addForeignKeyConstraint($schema->getTable('right'), array("right_id"), array("id"), array("onUpdate" => "CASCADE"));
+        $role_right->setPrimaryKey(["role_id", "right_id"]);
+
+        $role_right2 = $schema->createTable("role_right2");
+        $role_right2->addColumn("role_id", "integer", array("unsigned" => true));
+        $role_right2->addColumn("right_id", "integer", array("unsigned" => true));
+        $role_right2->addForeignKeyConstraint($schema->getTable('role'), array("role_id"), array("id"), array("onUpdate" => "CASCADE"));
+        $role_right2->addForeignKeyConstraint($schema->getTable('right'), array("right_id"), array("id"), array("onUpdate" => "CASCADE"));
+        $role_right2->setPrimaryKey(["role_id", "right_id"]);
+
+        $schemaAnalyzer = new SchemaAnalyzer($schema);
+
+        $schemaAnalyzer->getShortestPath("role", "right");
+    }
+
 }