Add tests for JSON reading

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>

3 files changed, 160 insertions, 0 deletions

diff --git a/tests/json/mod.rs b/tests/json/mod.rs
new file mode 100644
index 0000000..0bec210
--- /dev/null
+++ b/tests/json/mod.rs
@@ -0,0 +1 @@
+mod read;
diff --git a/tests/json/read.rs b/tests/json/read.rs
new file mode 100644
index 0000000..253e1f3
--- /dev/null
+++ b/tests/json/read.rs
@@ -0,0 +1,157 @@
+use std::str::FromStr;
+
+use serde_json::from_str as json_from_str;
+use serde_json::Value;
+use serde_json::Number;
+
+use serde_select::read::Read;
+use serde_select::query::Query;
+use serde_select::error::Error;
+
+#[test]
+fn test_read_empty() {
+    let json: Value = json_from_str("{}").unwrap();
+
+    let query = Query::from_str("a").unwrap();
+    let val = json.read(&query);
+
+    assert!(val.is_ok());
+    let val = val.unwrap();
+
+    assert!(val.is_none());
+}
+
+#[test]
+fn test_read_table() {
+    let json: Value = json_from_str("{\"table\":{}}").unwrap();
+
+    let query = Query::from_str("table").unwrap();
+    let val = json.read(&query);
+
+    assert!(val.is_ok());
+    let val = val.unwrap();
+
+    assert!(val.is_some());
+    let val = val.unwrap();
+
+    assert!(is_match!(val, &Value::Object(_)));
+    match val {
+        Value::Object(ref t) => assert!(t.is_empty()),
+        _ => panic!("What just happened?"),
+    }
+}
+
+#[test]
+fn test_read_table_value() {
+    let json: Value = json_from_str("{\"table\":{\"a\":1}}").unwrap();
+
+    let query = Query::from_str("table.a").unwrap();
+    let val = json.read(&query);
+
+    assert!(val.is_ok());
+    let val = val.unwrap();
+
+    assert!(val.is_some());
+    let val = val.unwrap();
+
+    assert!(match val { Value::Number(n) => n.as_i64().unwrap() == 1, _ => false });
+}
+
+#[test]
+fn test_read_empty_table_value() {
+    let json: Value = json_from_str("{\"table\":{}}").unwrap();
+
+    let query = Query::from_str("table.a").unwrap();
+    let val = json.read(&query);
+    assert!(val.is_ok());
+    let val = val.unwrap();
+
+    assert!(val.is_none());
+}
+
+#[test]
+fn test_read_table_index() {
+    let json: Value = json_from_str("{\"table\":{}}").unwrap();
+
+    let query = Query::from_str("table.[0]").unwrap();
+    let val = json.read(&query);
+    assert!(val.is_err());
+    let err = val.unwrap_err();
+
+    assert!(is_match!(err, Error::NoIndexInTable(_)));
+}
+
+///
+///
+/// Querying without specifying the seperator
+///
+///
+
+#[test]
+fn test_read_empty_without_seperator() {
+    let json: Value = json_from_str("{}").unwrap();
+
+    let val = json.read(&Query::from_str("a").unwrap());
+    assert!(val.is_ok());
+    let val = val.unwrap();
+
+    assert!(val.is_none());
+}
+
+#[test]
+fn test_read_table_without_seperator() {
+    let json: Value = json_from_str("{\"table\":{}}").unwrap();
+
+    let val = json.read(&Query::from_str("table").unwrap());
+
+    assert!(val.is_ok());
+    let val = val.unwrap();
+
+    assert!(val.is_some());
+    let val = val.unwrap();
+
+    assert!(is_match!(val, &Value::Object(_)));
+    match val {
+        Value::Object(ref t) => assert!(t.is_empty()),
+        _ => panic!("What just happened?"),
+    }
+}
+
+#[test]
+fn test_read_table_value_without_seperator() {
+    let json: Value = json_from_str("{\"table\":{\"a\":1}}").unwrap();
+
+    let val = json.read(&Query::from_str("table.a").unwrap());
+
+    assert!(val.is_ok());
+    let val = val.unwrap();
+
+    assert!(val.is_some());
+    let val = val.unwrap();
+
+    assert!(match val { Value::Number(n) => n.as_i64().unwrap() == 1, _ => false });
+}
+
+#[test]
+fn test_read_empty_table_value_without_seperator() {
+    let json: Value = json_from_str("{\"table\":{}}").unwrap();
+
+    let val = json.read(&Query::from_str("table.a").unwrap());
+    assert!(val.is_ok());
+    let val = val.unwrap();
+
+    assert!(val.is_none());
+}
+
+#[test]
+fn test_read_table_index_without_seperator() {
+    let json: Value = json_from_str("{\"table\":{}}").unwrap();
+
+    let val = json.read(&Query::from_str("table.[0]").unwrap());
+    assert!(val.is_err());
+    let err = val.unwrap_err();
+
+    assert!(is_match!(err, Error::NoIndexInTable(_)));
+}
+
+
diff --git a/tests/tests.rs b/tests/tests.rs
index 9c7a9f3..c5cb5c0 100644
--- a/tests/tests.rs
+++ b/tests/tests.rs
@@ -1,2 +1,4 @@
 #[macro_use] extern crate is_match;
+
 mod toml;
+mod json;