Add more tests for different schema settings

This is mainly to keep this coverage around in v1, where the `schema_for_schema` tests are no longer viable

schemars/tests/expected/schema_settings-2019_09.json

@@ -0,0 +1,65 @@
+{
+  "$schema": "https://json-schema.org/draft/2019-09/schema",
+  "title": "Outer",
+  "type": "object",
+  "required": [
+    "int",
+    "value",
+    "values"
+  ],
+  "properties": {
+    "int": {
+      "examples": [
+        8,
+        null
+      ],
+      "type": "integer",
+      "format": "int32"
+    },
+    "values": {
+      "type": "object",
+      "additionalProperties": true
+    },
+    "value": true,
+    "inner": {
+      "anyOf": [
+        {
+          "$ref": "#/definitions/Inner"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    }
+  },
+  "definitions": {
+    "Inner": {
+      "oneOf": [
+        {
+          "type": "string",
+          "enum": [
+            "UndocumentedUnit1",
+            "UndocumentedUnit2"
+          ]
+        },
+        {
+          "description": "This is a documented unit variant",
+          "type": "string",
+          "enum": [
+            "DocumentedUnit"
+          ]
+        },
+        {
+          "type": "object",
+          "required": [
+            "ValueNewType"
+          ],
+          "properties": {
+            "ValueNewType": true
+          },
+          "additionalProperties": false
+        }
+      ]
+    }
+  }
+}

schemars/tests/expected/schema_settings-openapi3.json

@@ -0,0 +1,60 @@
+{
+  "$schema": "https://spec.openapis.org/oas/3.0/schema/2019-04-02#/definitions/Schema",
+  "title": "Outer",
+  "type": "object",
+  "required": [
+    "int",
+    "value",
+    "values"
+  ],
+  "properties": {
+    "int": {
+      "type": "integer",
+      "format": "int32",
+      "example": 8
+    },
+    "values": {
+      "type": "object",
+      "additionalProperties": true
+    },
+    "value": {},
+    "inner": {
+      "allOf": [
+        {
+          "$ref": "#/components/schemas/Inner"
+        }
+      ],
+      "nullable": true
+    }
+  },
+  "definitions": {
+    "Inner": {
+      "oneOf": [
+        {
+          "type": "string",
+          "enum": [
+            "UndocumentedUnit1",
+            "UndocumentedUnit2"
+          ]
+        },
+        {
+          "description": "This is a documented unit variant",
+          "type": "string",
+          "enum": [
+            "DocumentedUnit"
+          ]
+        },
+        {
+          "type": "object",
+          "required": [
+            "ValueNewType"
+          ],
+          "properties": {
+            "ValueNewType": {}
+          },
+          "additionalProperties": false
+        }
+      ]
+    }
+  }
+}

schemars/tests/expected/schema_settings.json

@@ -0,0 +1,65 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Outer",
+  "type": "object",
+  "required": [
+    "int",
+    "value",
+    "values"
+  ],
+  "properties": {
+    "int": {
+      "examples": [
+        8,
+        null
+      ],
+      "type": "integer",
+      "format": "int32"
+    },
+    "values": {
+      "type": "object",
+      "additionalProperties": true
+    },
+    "value": true,
+    "inner": {
+      "anyOf": [
+        {
+          "$ref": "#/definitions/Inner"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    }
+  },
+  "definitions": {
+    "Inner": {
+      "oneOf": [
+        {
+          "type": "string",
+          "enum": [
+            "UndocumentedUnit1",
+            "UndocumentedUnit2"
+          ]
+        },
+        {
+          "description": "This is a documented unit variant",
+          "type": "string",
+          "enum": [
+            "DocumentedUnit"
+          ]
+        },
+        {
+          "type": "object",
+          "required": [
+            "ValueNewType"
+          ],
+          "properties": {
+            "ValueNewType": true
+          },
+          "additionalProperties": false
+        }
+      ]
+    }
+  }
+}

schemars/tests/schema_settings.rs

@@ -0,0 +1,45 @@
+mod util;
+use schemars::gen::SchemaSettings;
+use schemars::JsonSchema;
+use serde_json::Value;
+use std::collections::BTreeMap;
+use util::*;
+
+#[derive(JsonSchema)]
+pub struct Outer {
+    #[schemars(example = "eight", example = "null")]
+    pub int: i32,
+    pub values: BTreeMap<&'static str, Value>,
+    pub value: Value,
+    pub inner: Option<Inner>,
+}
+
+#[derive(JsonSchema)]
+pub enum Inner {
+    UndocumentedUnit1,
+    UndocumentedUnit2,
+    /// This is a documented unit variant
+    DocumentedUnit,
+    ValueNewType(Value),
+}
+
+fn eight() -> i32 {
+    8
+}
+
+fn null() {}
+
+#[test]
+fn schema_matches_draft07() -> TestResult {
+    test_generated_schema::<Outer>("schema_settings", SchemaSettings::draft07())
+}
+
+#[test]
+fn schema_matches_2019_09() -> TestResult {
+    test_generated_schema::<Outer>("schema_settings-2019_09", SchemaSettings::draft2019_09())
+}
+
+#[test]
+fn schema_matches_openapi3() -> TestResult {
+    test_generated_schema::<Outer>("schema_settings-openapi3", SchemaSettings::openapi3())
+}