[algorithm][schema] update schema to be more specific

Also adds tests & new objects to check validation rules.
Uses new json schema draft 7 keywords

beat/core/schema/algorithm/common.json

@@ -66,7 +66,7 @@
 
     "range": {
       "type": "array",
-      "items": "number",
+      "items": { "type": "number" },
       "minItems": 2,
       "maxItems": 2
     },
@@ -78,45 +78,70 @@
     },
 
     "parameter": {
-      "type": "object",
-      "properties": {
-        "type": { "$ref": "../common/1.json#/definitions/basetype" },
-        "default": { "$ref": "../common/1.json#/definitions/value" },
-        "description": { "type": "string" }
-      },
-      "required": [
-        "type"
-      ]
+            "type": "object",
+            "properties": {
+                    "type": { "$ref": "../common/1.json#/definitions/basetype" },
+                    "default": { "$ref": "../common/1.json#/definitions/value" },
+                    "description": { "type": "string" }
+            },
+            "required": [
+                    "type"
+            ],
+            "additionalProperties": false
     },
 
     "range_parameter": {
-      "allOf": [
-        { "$ref": "#/definitions/parameter" },
-        {
-          "properties": {
-            "range": { "$ref": "#/definitions/range" }
-          },
-          "required": [
-            "range"
-          ]
-        }
-      ],
-      "additionalProperties": false
+            "type": "object",
+            "properties": {
+                    "type": { "$ref": "../common/1.json#/definitions/basetype" },
+                    "default": { "$ref": "../common/1.json#/definitions/value" },
+                    "description": { "type": "string" },
+                    "range": { "$ref": "#/definitions/range" }
+            },
+            "required": [
+                    "type",
+                    "range"
+            ],
+            "not": {
+                    "properties": {
+                            "type": {
+                                    "type": "string",
+                                    "enum": [
+                                            "string",
+                                            "bool"
+                                    ]
+                            }
+                    }
+            },
+            "additionalProperties": false
     },
 
     "choice_parameter": {
-      "allOf": [
-        { "$ref": "#/definitions/parameter" },
-        {
-          "properties": {
-            "range": { "$ref": "#/definitions/choice" }
-          },
-          "required": [
-            "choice"
-          ]
-        }
-      ],
-      "additionalProperties": false
+            "type": "object",
+            "properties": {
+                    "type": { "$ref": "../common/1.json#/definitions/basetype" },
+                    "default": { "$ref": "../common/1.json#/definitions/value" },
+                    "description": { "type": "string" },
+                    "range": { "$ref": "#/definitions/choice" }
+            },
+            "required": [
+                    "type",
+                    "choice"
+            ],
+            "not": {
+                    "properties": {
+                            "type": {
+                                    "type": "string",
+                                    "enum": [
+                                            "bool"
+                                    ]
+                            }
+                    }
+            },
+            "if": { "properties": { "type": { "const": "string" } } },
+            "then": { "properties": { "default": { "type": "string" } } },
+            "else": { "properties": { "default": { "type": "number" } } },
+            "additionalProperties": false
     },
 
     "parameters": {

beat/core/schema/dataformat/1.json

@@ -15,7 +15,7 @@
     "^[a-zA-Z_][a-zA-Z0-9_-]*$": {
       "oneOf": [
         { "$ref": "../common/1.json#/definitions/basetype" },
-        { "$ref": "#/definitions/complextypes" },
+        { "$ref": "#/definitions/complextype" },
         { "$ref": "#/definitions/array1d" },
         { "$ref": "#/definitions/array2d" },
         { "$ref": "#/definitions/array3d" },
@@ -30,7 +30,7 @@
   "additionalProperties": false,
 
   "definitions": {
-    "complextypes": {
+    "complextype": {
       "type": "string",
       "enum": [
         "complex64",

beat/core/test/prefix/algorithms/schema/invalid_range_parameter/1.json

+{
+    "api_version": 2,
+    "schema_version": 3,
+    "splittable": false,
+    "type": "sequential",
+    "uses": {},
+    "description": "this is an example of an algorithm with an invalid range parameter (range parameters cant be string types)",
+    "groups": [
+        {
+            "name": "group",
+            "inputs": {
+                "input": {
+                    "type": "user/single_integer/1"
+                }
+            },
+            "outputs": {
+                "output": {
+                    "type": "user/single_integer/1"
+                }
+            }
+        }
+    ],
+    "language": "python",
+    "parameters": {
+        "testparam": {
+            "range": [
+                0,
+                1
+            ],
+            "type": "string"
+        }
+    }
+}

beat/core/test/prefix/algorithms/schema/invalid_range_parameter/1.py

+#!/usr/bin/env python
+# vim: set fileencoding=utf-8 :
+
+###################################################################################
+#                                                                                 #
+# Copyright (c) 2019 Idiap Research Institute, http://www.idiap.ch/               #
+# Contact: beat.support@idiap.ch                                                  #
+#                                                                                 #
+# Redistribution and use in source and binary forms, with or without              #
+# modification, are permitted provided that the following conditions are met:     #
+#                                                                                 #
+# 1. Redistributions of source code must retain the above copyright notice, this  #
+# list of conditions and the following disclaimer.                                #
+#                                                                                 #
+# 2. Redistributions in binary form must reproduce the above copyright notice,    #
+# this list of conditions and the following disclaimer in the documentation       #
+# and/or other materials provided with the distribution.                          #
+#                                                                                 #
+# 3. Neither the name of the copyright holder nor the names of its contributors   #
+# may be used to endorse or promote products derived from this software without   #
+# specific prior written permission.                                              #
+#                                                                                 #
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND #
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED   #
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE          #
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE    #
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL      #
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR      #
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER      #
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,   #
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE   #
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.            #
+#                                                                                 #
+###################################################################################
+
+
+class Algorithm:
+    def process(self, inputs, outputs):
+        return True

beat/core/test/prefix/algorithms/schema/invalid_range_parameter/2.json

+{
+    "api_version": 2,
+    "schema_version": 3,
+    "splittable": false,
+    "type": "sequential",
+    "uses": {},
+    "description": "this is an example of an algorithm with an invalid range parameter (range parameters cant be bool types)",
+    "groups": [
+        {
+            "name": "group",
+            "inputs": {
+                "input": {
+                    "type": "user/single_integer/1"
+                }
+            },
+            "outputs": {
+                "output": {
+                    "type": "user/single_integer/1"
+                }
+            }
+        }
+    ],
+    "language": "python",
+    "parameters": {
+        "testparam": {
+            "range": [
+                0,
+                1
+            ],
+            "type": "boolean"
+        }
+    }
+}

beat/core/test/prefix/algorithms/schema/invalid_range_parameter/2.py

+#!/usr/bin/env python
+# vim: set fileencoding=utf-8 :
+
+###################################################################################
+#                                                                                 #
+# Copyright (c) 2019 Idiap Research Institute, http://www.idiap.ch/               #
+# Contact: beat.support@idiap.ch                                                  #
+#                                                                                 #
+# Redistribution and use in source and binary forms, with or without              #
+# modification, are permitted provided that the following conditions are met:     #
+#                                                                                 #
+# 1. Redistributions of source code must retain the above copyright notice, this  #
+# list of conditions and the following disclaimer.                                #
+#                                                                                 #
+# 2. Redistributions in binary form must reproduce the above copyright notice,    #
+# this list of conditions and the following disclaimer in the documentation       #
+# and/or other materials provided with the distribution.                          #
+#                                                                                 #
+# 3. Neither the name of the copyright holder nor the names of its contributors   #
+# may be used to endorse or promote products derived from this software without   #
+# specific prior written permission.                                              #
+#                                                                                 #
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND #
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED   #
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE          #
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE    #
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL      #
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR      #
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER      #
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,   #
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE   #
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.            #
+#                                                                                 #
+###################################################################################
+
+
+class Algorithm:
+    def process(self, inputs, outputs):
+        return True

beat/core/test/prefix/algorithms/schema/invalid_range_parameter/3.json

+{
+    "api_version": 2,
+    "schema_version": 3,
+    "splittable": false,
+    "type": "sequential",
+    "uses": {},
+    "description": "this is an example of an algorithm with an invalid range parameter (ranges must be numbers)",
+    "groups": [
+        {
+            "name": "group",
+            "inputs": {
+                "input": {
+                    "type": "user/single_integer/1"
+                }
+            },
+            "outputs": {
+                "output": {
+                    "type": "user/single_integer/1"
+                }
+            }
+        }
+    ],
+    "language": "python",
+    "parameters": {
+        "testparam": {
+            "range": [
+                "0",
+                "1"
+            ],
+            "type": "float64"
+        }
+    }
+}

beat/core/test/prefix/algorithms/schema/invalid_range_parameter/3.py

+#!/usr/bin/env python
+# vim: set fileencoding=utf-8 :
+
+###################################################################################
+#                                                                                 #
+# Copyright (c) 2019 Idiap Research Institute, http://www.idiap.ch/               #
+# Contact: beat.support@idiap.ch                                                  #
+#                                                                                 #
+# Redistribution and use in source and binary forms, with or without              #
+# modification, are permitted provided that the following conditions are met:     #
+#                                                                                 #
+# 1. Redistributions of source code must retain the above copyright notice, this  #
+# list of conditions and the following disclaimer.                                #
+#                                                                                 #
+# 2. Redistributions in binary form must reproduce the above copyright notice,    #
+# this list of conditions and the following disclaimer in the documentation       #
+# and/or other materials provided with the distribution.                          #
+#                                                                                 #
+# 3. Neither the name of the copyright holder nor the names of its contributors   #
+# may be used to endorse or promote products derived from this software without   #
+# specific prior written permission.                                              #
+#                                                                                 #
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND #
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED   #
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE          #
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE    #
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL      #
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR      #
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER      #
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,   #
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE   #
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.            #
+#                                                                                 #
+###################################################################################
+
+
+class Algorithm:
+    def process(self, inputs, outputs):
+        return True

beat/core/test/prefix/algorithms/schema/invalid_range_parameter/4.json

+{
+    "api_version": 2,
+    "schema_version": 3,
+    "splittable": false,
+    "type": "sequential",
+    "uses": {},
+    "description": "this is an example of an algorithm with an invalid range parameter (ranges must be numbers)",
+    "groups": [
+        {
+            "name": "group",
+            "inputs": {
+                "input": {
+                    "type": "user/single_integer/1"
+                }
+            },
+            "outputs": {
+                "output": {
+                    "type": "user/single_integer/1"
+                }
+            }
+        }
+    ],
+    "language": "python",
+    "parameters": {
+        "testparam": {
+            "range": [
+                null,
+                true
+            ],
+            "type": "float64"
+        }
+    }
+}

beat/core/test/prefix/algorithms/schema/invalid_range_parameter/4.py

+#!/usr/bin/env python
+# vim: set fileencoding=utf-8 :
+
+###################################################################################
+#                                                                                 #
+# Copyright (c) 2019 Idiap Research Institute, http://www.idiap.ch/               #
+# Contact: beat.support@idiap.ch                                                  #
+#                                                                                 #
+# Redistribution and use in source and binary forms, with or without              #
+# modification, are permitted provided that the following conditions are met:     #
+#                                                                                 #
+# 1. Redistributions of source code must retain the above copyright notice, this  #
+# list of conditions and the following disclaimer.                                #
+#                                                                                 #
+# 2. Redistributions in binary form must reproduce the above copyright notice,    #
+# this list of conditions and the following disclaimer in the documentation       #
+# and/or other materials provided with the distribution.                          #
+#                                                                                 #
+# 3. Neither the name of the copyright holder nor the names of its contributors   #
+# may be used to endorse or promote products derived from this software without   #
+# specific prior written permission.                                              #
+#                                                                                 #
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND #
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED   #
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE          #
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE    #
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL      #
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR      #
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER      #
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,   #
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE   #
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.            #
+#                                                                                 #
+###################################################################################
+
+
+class Algorithm:
+    def process(self, inputs, outputs):
+        return True

beat/core/test/prefix/algorithms/schema/invalid_range_parameter/5.json

+{
+    "api_version": 2,
+    "schema_version": 3,
+    "splittable": false,
+    "type": "sequential",
+    "uses": {},
+    "description": "this is an example of an algorithm with an invalid range parameter (ranges cant have choices as well)",
+    "groups": [
+        {
+            "name": "group",
+            "inputs": {
+                "input": {
+                    "type": "user/single_integer/1"
+                }
+            },
+            "outputs": {
+                "output": {
+                    "type": "user/single_integer/1"
+                }
+            }
+        }
+    ],
+    "language": "python",
+    "parameters": {
+        "testparam": {
+            "range": [
+                0,
+                1
+            ],
+            "choice": [
+                    1,
+                    2,
+                    3
+            ],
+            "type": "float64"
+        }
+    }
+}

beat/core/test/prefix/algorithms/schema/invalid_range_parameter/5.py

+#!/usr/bin/env python
+# vim: set fileencoding=utf-8 :
+
+###################################################################################
+#                                                                                 #
+# Copyright (c) 2019 Idiap Research Institute, http://www.idiap.ch/               #
+# Contact: beat.support@idiap.ch                                                  #
+#                                                                                 #
+# Redistribution and use in source and binary forms, with or without              #
+# modification, are permitted provided that the following conditions are met:     #
+#                                                                                 #
+# 1. Redistributions of source code must retain the above copyright notice, this  #
+# list of conditions and the following disclaimer.                                #
+#                                                                                 #
+# 2. Redistributions in binary form must reproduce the above copyright notice,    #
+# this list of conditions and the following disclaimer in the documentation       #
+# and/or other materials provided with the distribution.                          #
+#                                                                                 #
+# 3. Neither the name of the copyright holder nor the names of its contributors   #
+# may be used to endorse or promote products derived from this software without   #
+# specific prior written permission.                                              #
+#                                                                                 #
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND #
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED   #
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE          #
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE    #
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL      #
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR      #
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER      #
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,   #
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE   #
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.            #
+#                                                                                 #
+###################################################################################
+
+
+class Algorithm:
+    def process(self, inputs, outputs):
+        return True

beat/core/test/prefix/algorithms/user/valid_parameter/1.json

+{
+    "api_version": 2,
+    "schema_version": 3,
+    "splittable": false,
+    "type": "sequential",
+    "uses": {},
+    "description": "this is an example of an algorithm with a valid range parameter",
+    "groups": [
+        {
+            "name": "group",
+            "inputs": {
+                "input": {
+                    "type": "user/single_integer/1"
+                }
+            },
+            "outputs": {
+                "output": {
+                    "type": "user/single_integer/1"
+                }
+            }
+        }
+    ],
+    "language": "python",
+    "parameters": {
+        "testparam": {
+            "range": [
+                0,
+                1
+            ],
+            "type": "float64"
+        }
+    }
+}

beat/core/test/prefix/algorithms/user/valid_parameter/1.py

+#!/usr/bin/env python
+# vim: set fileencoding=utf-8 :
+
+###################################################################################
+#                                                                                 #
+# Copyright (c) 2019 Idiap Research Institute, http://www.idiap.ch/               #
+# Contact: beat.support@idiap.ch                                                  #
+#                                                                                 #
+# Redistribution and use in source and binary forms, with or without              #
+# modification, are permitted provided that the following conditions are met:     #
+#                                                                                 #
+# 1. Redistributions of source code must retain the above copyright notice, this  #
+# list of conditions and the following disclaimer.                                #
+#                                                                                 #
+# 2. Redistributions in binary form must reproduce the above copyright notice,    #
+# this list of conditions and the following disclaimer in the documentation       #
+# and/or other materials provided with the distribution.                          #
+#                                                                                 #
+# 3. Neither the name of the copyright holder nor the names of its contributors   #
+# may be used to endorse or promote products derived from this software without   #
+# specific prior written permission.                                              #
+#                                                                                 #
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND #
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED   #
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE          #
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE    #
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL      #
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR      #
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER      #
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,   #
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE   #
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.            #
+#                                                                                 #
+###################################################################################
+
+
+class Algorithm:
+    def __init__(self):
+        pass
+
+    def setup(self, parameters):
+        return True
+
+    def process(self, inputs, outputs):
+        return True

beat/core/test/test_algorithm_loading.py

@@ -135,6 +135,34 @@ def test_invalid_v3():
 # ----------------------------------------------------------
 
 
+def test_valid_parameters():
+    algorithm = Algorithm(prefix, "user/valid_parameter/1")
+    nose.tools.assert_true(
+        algorithm.valid, "\n  * %s" % "\n  * ".join(algorithm.errors)
+    )
+
+
+def test_invalid_parameters():
+    # range params cant have type: "string"
+    algorithm = Algorithm(prefix, "schema/invalid_range_parameter/1")
+    nose.tools.assert_false(algorithm.valid)
+
+    algorithm = Algorithm(prefix, "schema/invalid_range_parameter/2")
+    nose.tools.assert_false(algorithm.valid)
+
+    algorithm = Algorithm(prefix, "schema/invalid_range_parameter/3")
+    nose.tools.assert_false(algorithm.valid)
+
+    algorithm = Algorithm(prefix, "schema/invalid_range_parameter/4")
+    nose.tools.assert_false(algorithm.valid)
+
+    algorithm = Algorithm(prefix, "schema/invalid_range_parameter/5")
+    nose.tools.assert_false(algorithm.valid)
+
+
+# ----------------------------------------------------------
+
+
 @nose.tools.with_setup(teardown=cleanup)
 def test_export():