Fixed unit tests.

.gitignore

@@ -3,3 +3,4 @@
 /*.sqlite
 /result
 /.idea
+.tmp

flake.nix

@@ -41,7 +41,9 @@
                          pre-commit
                          rustPackages.clippy
                          cargo-tarpaulin
-                         deno];
+                         deno
+                         foreman
+                         postgresql];
           RUST_SRC_PATH = rustPlatform.rustLibSrc;
         };
       });

src/db/_accounts.rs

@@ -1,12 +1,12 @@
 use fraction::Fraction;
-use rusqlite::{params, Connection, OptionalExtension, Result, Row};
+use rusqlite::{params, Connection, ErrorCode, OptionalExtension, Result, Row};
 
 use crate::db::_external_id::{AccountId, Id, UserId};
 use crate::db::_securities::Security;
 
 use crate::db::external_id::SecurityId;
-use crate::util::{CustomResult, Error};
 use crate::util::Error::FuckingError;
+use crate::util::{CustomResult, Error};
 
 #[derive(Debug)]
 pub enum AccountType {
@@ -15,19 +15,18 @@ pub enum AccountType {
 }
 
 impl AccountType {
-
-    fn from_string(s: & String) -> Option<AccountType>{
+    fn from_string(s: &String) -> Option<AccountType> {
         if s == "security_emitter" {
             Some(AccountType::SecurityEmitter)
-        } else if s == "checking"{
+        } else if s == "checking" {
             Some(AccountType::Checking)
-        }else{
+        } else {
             None
         }
     }
     pub fn from_row(row: &Row) -> Result<AccountType> {
         let s: String = row.get("acc_account_type")?;
-        AccountType::from_string(& s).ok_or(rusqlite::Error::ExecuteReturnedResults)
+        AccountType::from_string(&s).ok_or(rusqlite::Error::ExecuteReturnedResults)
     }
 }
 
@@ -41,12 +40,13 @@ impl PartialEq for AccountType {
     }
 }
 
-impl ToString for AccountType{
+impl ToString for AccountType {
     fn to_string(&self) -> String {
         match self {
             AccountType::Checking => "checking",
             AccountType::SecurityEmitter => "security_emitter",
-        }.to_string()
+        }
+        .to_string()
     }
 }
 
@@ -107,9 +107,9 @@ impl Account {
     }
 }
 
-impl Clone for Account{
+impl Clone for Account {
     fn clone(&self) -> Self {
-        Account{
+        Account {
             id: self.id,
             amount: self.amount,
             timestamp: self.timestamp,
@@ -117,7 +117,6 @@ impl Clone for Account{
             account_type: self.account_type.clone(),
             label: self.label.clone(),
         }
-
     }
 }
 #[derive(Debug)]
@@ -192,7 +191,7 @@ pub fn list_accounts<'a>(conn: &Connection) -> CustomResult<Vec<Account>> {
     return Ok(ret);
 }
 
-pub fn list_user_accounts(conn: &Connection, user_id: & UserId) -> CustomResult<Vec<Account>> {
+pub fn list_user_accounts(conn: &Connection, user_id: &UserId) -> CustomResult<Vec<Account>> {
     let q = "SELECT acc.id AS acc_id,
                           acc.amount AS acc_amount,
                           UNIXEPOCH(acc.timestamp) AS acc_timestamp,
@@ -237,7 +236,10 @@ pub fn get_account_by_id(tx: &Connection, id: &AccountId) -> CustomResult<Accoun
         .map_err(Error::SqlError);
 }
 
-pub fn get_checking_accounts_for_sec_id(tx: &Connection, sec_id: &SecurityId) -> CustomResult<Vec<Account>> {
+pub fn get_checking_accounts_for_sec_id(
+    tx: &Connection,
+    sec_id: &SecurityId,
+) -> CustomResult<Vec<Account>> {
     let q = "
         SELECT acc.id AS acc_id,
                           acc.amount AS acc_amount,
@@ -260,7 +262,6 @@ pub fn get_checking_accounts_for_sec_id(tx: &Connection, sec_id: &SecurityId) ->
         .map(Result::unwrap)
         .collect();
     return Ok(ret);
-
 }
 
 fn create_account(
@@ -353,7 +354,7 @@ impl AccountChangeReceipt {
             amount: row.get("amount")?,
             timestamp: row.get("timestamp")?,
             security_id: SecurityId::from_id(row.get("security_id")?),
-            account_type: AccountType::from_row(row)?
+            account_type: AccountType::from_row(row)?,
         })
     }
 }
@@ -373,6 +374,13 @@ fn update_account_history(tx: &Connection, account_id: &AccountId) -> CustomResu
     Ok(())
 }
 
+fn is_invalid_amount_error(e: &rusqlite::Error) -> bool {
+    match e {
+        rusqlite::Error::SqliteFailure(uf, _) => uf.code == ErrorCode::ConstraintViolation,
+        _ => false,
+    }
+}
+
 /// Super low level functions that needs to be wrapped in something else.
 ///
 /// This method does NOT guarantee that all amount added into an account
@@ -398,16 +406,23 @@ pub fn add_to_account(
                   security AS security_id
     ";
     let params = params![amount, account_id];
-    let ret = tx
-        .query_row(q, params, AccountChangeReceipt::from_row)
-        .map_err(Error::SqlError);
+    let res = tx.query_row(q, params, AccountChangeReceipt::from_row);
+    let ret = res.map_err(|e| {
+        if is_invalid_amount_error(&e) {
+            Error::InvalidAmount(format!("Invalid value {:} added to account {:}", amount, account_id))
+        } else {
+            Error::SqlError(e)
+        }
+    })?;
     update_account_history(tx, account_id)?;
-    return ret;
+    return Ok(ret);
 }
 
-pub fn get_number_of_accounts(tx: &Connection,
-                              sec: &SecurityId,
-                              account_type: AccountType) -> CustomResult<i64>{
+pub fn get_number_of_accounts(
+    tx: &Connection,
+    sec: &SecurityId,
+    account_type: AccountType,
+) -> CustomResult<i64> {
     let q = "
         SELECT COUNT(*) AS count
         FROM accounts
@@ -415,15 +430,15 @@ pub fn get_number_of_accounts(tx: &Connection,
               AND account_type = ?
     ";
     let params = params![sec, account_type.to_string()];
-    tx.query_row(q, params, |row| row.get("count")).map_err(Error::SqlError)
+    tx.query_row(q, params, |row| row.get("count"))
+        .map_err(Error::SqlError)
 }
 
 /// Market cap is computer by summing the security emitter accounts.
 /// We use this technique because the sum of the security
 /// emitter accounts MUST equals (more or less very tiny interest
 /// amounts) the sum of the checking accounts.
-pub fn get_security_market_cap(tx: &Connection,
-                               sec: &SecurityId) -> CustomResult<i64> {
+pub fn get_security_market_cap(tx: &Connection, sec: &SecurityId) -> CustomResult<i64> {
     let q = "
         SELECT COALESCE(-1 * SUM(amount), 0) AS count
         FROM accounts
@@ -431,7 +446,8 @@ pub fn get_security_market_cap(tx: &Connection,
               AND account_type = ?
     ";
     let params = params![sec, AccountType::SecurityEmitter.to_string()];
-    tx.query_row(q, params, |row| row.get("count")).map_err(Error::SqlError)
+    tx.query_row(q, params, |row| row.get("count"))
+        .map_err(Error::SqlError)
 }
 
 #[cfg(test)]
@@ -472,14 +488,13 @@ mod test_accounts {
         return Ok(ret);
     }
 
-    fn assert_test_account_type_to_string_and_from_row_works(account_type: AccountType){
+    fn assert_test_account_type_to_string_and_from_row_works(account_type: AccountType) {
         let serialized = account_type.to_string();
         assert_eq!(AccountType::from_string(&serialized).unwrap(), account_type);
-
     }
 
     #[test]
-    fn test_account_type_to_string_and_from_row(){
+    fn test_account_type_to_string_and_from_row() {
         assert_test_account_type_to_string_and_from_row_works(AccountType::Checking);
         assert_test_account_type_to_string_and_from_row_works(AccountType::SecurityEmitter);
     }
@@ -492,10 +507,12 @@ mod test_accounts {
         let sec = secs.get(0).unwrap();
         let tx = conn.transaction().unwrap();
 
-        let acc = create_checking_account(&tx,
-                                          &sec.id(),
-                                          &user.id(),
-                                          &format!("Account for {:} in {:}", sec.id(), user.id()))?;
+        let acc = create_checking_account(
+            &tx,
+            &sec.id(),
+            &user.id(),
+            &format!("Account for {:} in {:}", sec.id(), user.id()),
+        )?;
         assert_eq!(acc.account_type, AccountType::Checking);
         assert_eq!(0, acc.raw_amount());
 
@@ -567,7 +584,7 @@ mod test_accounts {
         let tx = conn.transaction().unwrap();
         let sec = secs.get(0).unwrap().id();
         let user = users.get(0).unwrap().id();
-        let acc = create_checking_account(&tx, &sec, &user, & "acc".to_string()).unwrap();
+        let acc = create_checking_account(&tx, &sec, &user, &"acc".to_string()).unwrap();
         let receipt = add_to_account(&tx, &acc.id(), 33)?;
         assert_eq!(receipt.account_id, acc.id());
         assert_eq!(receipt.amount, 33);
@@ -591,7 +608,7 @@ mod test_accounts {
         let tx = conn.transaction().unwrap();
         let sec = secs.get(0).unwrap().id();
         let user = users.get(0).unwrap().id();
-        let acc = create_security_emitter_account(&tx, &sec, &user, & "acc".to_string())?;
+        let acc = create_security_emitter_account(&tx, &sec, &user, &"acc".to_string())?;
 
         let receipt = add_to_account(&tx, &acc.id(), -33)?;
         assert_eq!(receipt.account_id, acc.id());
@@ -608,16 +625,30 @@ mod test_accounts {
         Ok(())
     }
 
+    #[test]
+    fn test_add_to_account_unfounded_err() -> CustomResult<()> {
+        let (mut conn, users, secs) = setup();
+        let sec = secs.get(0).unwrap().id();
+        let user = users.get(0).unwrap().id();
+        // let sec_emitter_acc = create_security_emitter_account(&conn, &sec, &user, & "sec emitter acc".to_string())?;
+        let checking_account =
+            create_checking_account(&conn, &sec, &user, &"checking acc".to_string())?;
+        match add_to_account(&conn, &checking_account.id(), -33) {
+            Err(Error::InvalidAmount(_)) => Ok(()),
+            _ => Err(Error::Testing("Expected InvalidAmount error".to_string()))
+        }
+    }
+
     #[test]
     fn test_list_user_accounts() -> CustomResult<()> {
         let (mut conn, users, secs) = setup();
         {
             let tx = conn.transaction().unwrap();
-            create_all_accounts(& tx, &users, &secs)?;
+            create_all_accounts(&tx, &users, &secs)?;
             tx.commit().map_err(Error::SqlError)?;
         }
 
-        let res = list_user_accounts(& conn, & users[0].id())?;
+        let res = list_user_accounts(&conn, &users[0].id())?;
         assert_eq!(res.len(), 2);
         Ok(())
     }
@@ -625,15 +656,28 @@ mod test_accounts {
     #[test]
     fn test_get_number_of_accounts() -> CustomResult<()> {
         let (mut conn, users, secs) = setup();
-        create_all_accounts(&conn,  &users, &secs)?;
+        create_all_accounts(&conn, &users, &secs)?;
         let n = get_number_of_accounts(&conn, &secs.get(0).unwrap().id(), AccountType::Checking)?;
         assert_eq!(n, 2);
 
-        let n = get_number_of_accounts(&conn, &secs.get(0).unwrap().id(), AccountType::SecurityEmitter)?;
+        let n = get_number_of_accounts(
+            &conn,
+            &secs.get(0).unwrap().id(),
+            AccountType::SecurityEmitter,
+        )?;
         assert_eq!(n, 0);
 
-        create_security_emitter_account(&conn, &secs.get(0).unwrap().id(), &users.get(0).unwrap().id(), &"".to_string())?;
-        let n = get_number_of_accounts(&conn, &secs.get(0).unwrap().id(), AccountType::SecurityEmitter)?;
+        create_security_emitter_account(
+            &conn,
+            &secs.get(0).unwrap().id(),
+            &users.get(0).unwrap().id(),
+            &"".to_string(),
+        )?;
+        let n = get_number_of_accounts(
+            &conn,
+            &secs.get(0).unwrap().id(),
+            AccountType::SecurityEmitter,
+        )?;
         assert_eq!(n, 1);
         Ok(())
     }
@@ -641,9 +685,14 @@ mod test_accounts {
     #[test]
     fn test_get_security_market_cap() -> CustomResult<()> {
         let (mut conn, users, secs) = setup();
-        let accounts = create_all_accounts(&conn,  &users, &secs.get(0..1).unwrap().to_vec())?;
+        let accounts = create_all_accounts(&conn, &users, &secs.get(0..1).unwrap().to_vec())?;
         let sec_id = &secs.get(0).unwrap().id();
-        let sec_emitter = create_security_emitter_account(&conn, sec_id, &users.get(0).unwrap().id(), &"".to_string())?;
+        let sec_emitter = create_security_emitter_account(
+            &conn,
+            sec_id,
+            &users.get(0).unwrap().id(),
+            &"".to_string(),
+        )?;
 
         let n = get_security_market_cap(&conn, sec_id)?;
         assert_eq!(n, 0);