postgresql: Remove pg_catalog schema from tests (#638)

Author: kyleconroy

internal/engine/postgresql/catalog.go

@@ -9,3 +9,11 @@ func NewCatalog() *catalog.Catalog {
 	c.SearchPath = []string{"pg_catalog"}
 	return c
 }
+
+// The generated pg_catalog is very slow to compare because it has so
+// many entries. For testing, don't include it.
+func newTestCatalog() *catalog.Catalog {
+	c := catalog.New("public")
+	c.Schemas = append(c.Schemas, pgTemp())
+	return c
+}

internal/engine/postgresql/catalog_test.go

@@ -564,13 +564,13 @@ func TestUpdate(t *testing.T) {
 				t.Fatal(err)
 			}
 
-			c := NewCatalog()
+			c := newTestCatalog()
 			if err := c.Build(stmts); err != nil {
 				t.Log(test.stmt)
 				t.Fatal(err)
 			}
 
-			e := NewCatalog()
+			e := newTestCatalog()
 			if test.s != nil {
 				var replaced bool
 				for i := range e.Schemas {