diff --git a/core/src/datapoint_source/bitpanda.rs b/core/src/datapoint_source/bitpanda.rs
index ec6c6074..379e2d07 100644
--- a/core/src/datapoint_source/bitpanda.rs
+++ b/core/src/datapoint_source/bitpanda.rs
@@ -7,6 +7,7 @@ use super::DataPointSourceError;
 #[derive(Debug, Clone)]
 pub struct BitPanda {}
 
+#[cfg(not(test))]
 pub async fn get_kgau_usd() -> Result<AssetsExchangeRate<KgAu, Usd>, DataPointSourceError> {
     let url = "https://api.bitpanda.com/v1/ticker";
     let resp = reqwest::get(url).await?;
@@ -34,6 +35,20 @@ pub async fn get_kgau_usd() -> Result<AssetsExchangeRate<KgAu, Usd>, DataPointSo
     }
 }
 
+#[cfg(test)]
+pub async fn get_kgau_usd() -> Result<AssetsExchangeRate<KgAu, Usd>, DataPointSourceError> {
+    // USD price of 1 gram of gold
+    let p_float = 66.10;
+    let usd_per_kgau = KgAu::from_gram(p_float);
+    let rate = AssetsExchangeRate {
+        per1: KgAu {},
+        get: Usd {},
+        rate: usd_per_kgau,
+    };
+    Ok(rate)
+}
+
+#[cfg(not(test))]
 // Get USD/BTC. Can be used as a redundant source for ERG/BTC through ERG/USD and USD/BTC
 pub(crate) async fn get_btc_usd() -> Result<AssetsExchangeRate<Btc, Usd>, DataPointSourceError> {
     let url = "https://api.bitpanda.com/v1/ticker";
@@ -61,6 +76,18 @@ pub(crate) async fn get_btc_usd() -> Result<AssetsExchangeRate<Btc, Usd>, DataPo
     }
 }
 
+#[cfg(test)]
+pub(crate) async fn get_btc_usd() -> Result<AssetsExchangeRate<Btc, Usd>, DataPointSourceError> {
+    // USD price of BTC
+    let usd_per_btc = 43827.02;
+    let rate = AssetsExchangeRate {
+        per1: Btc {},
+        get: Usd {},
+        rate: usd_per_btc,
+    };
+    Ok(rate)
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
diff --git a/core/src/datapoint_source/coincap.rs b/core/src/datapoint_source/coincap.rs
index ec47a6f3..7f3191b8 100644
--- a/core/src/datapoint_source/coincap.rs
+++ b/core/src/datapoint_source/coincap.rs
@@ -7,6 +7,7 @@ use super::DataPointSourceError;
 #[derive(Debug, Clone)]
 pub struct CoinCap;
 
+#[cfg(not(test))]
 pub async fn get_usd_nanoerg() -> Result<AssetsExchangeRate<Usd, NanoErg>, DataPointSourceError> {
     // see https://coincap.io/assets/ergo
     let url = "https://api.coincap.io/v2/assets/ergo";
@@ -34,6 +35,19 @@ pub async fn get_usd_nanoerg() -> Result<AssetsExchangeRate<Usd, NanoErg>, DataP
     }
 }
 
+#[cfg(test)]
+pub async fn get_usd_nanoerg() -> Result<AssetsExchangeRate<Usd, NanoErg>, DataPointSourceError> {
+    let p_float = 1.661_923_469_67;
+    let nanoerg_per_usd = NanoErg::from_erg(1.0 / p_float);
+    let rate = AssetsExchangeRate {
+        per1: Usd {},
+        get: NanoErg {},
+        rate: nanoerg_per_usd,
+    };
+    Ok(rate)
+}
+
+#[cfg(not(test))]
 // Get USD/BTC. Can be used as a redundant source for ERG/BTC through ERG/USD and USD/BTC
 pub async fn get_btc_usd() -> Result<AssetsExchangeRate<Btc, Usd>, DataPointSourceError> {
     // see https://coincap.io/assets/ergo
@@ -61,6 +75,17 @@ pub async fn get_btc_usd() -> Result<AssetsExchangeRate<Btc, Usd>, DataPointSour
     }
 }
 
+#[cfg(test)]
+pub async fn get_btc_usd() -> Result<AssetsExchangeRate<Btc, Usd>, DataPointSourceError> {
+    let usd_per_btc = 43_712.768_005_075_37;
+    let rate = AssetsExchangeRate {
+        per1: Btc {},
+        get: Usd {},
+        rate: usd_per_btc,
+    };
+    Ok(rate)
+}
+
 #[cfg(test)]
 mod tests {
     use super::super::bitpanda;
diff --git a/core/src/datapoint_source/coingecko.rs b/core/src/datapoint_source/coingecko.rs
index 33dca31e..6955b2d0 100644
--- a/core/src/datapoint_source/coingecko.rs
+++ b/core/src/datapoint_source/coingecko.rs
@@ -29,6 +29,7 @@ pub async fn get_kgau_nanoerg() -> Result<AssetsExchangeRate<KgAu, NanoErg>, Dat
     }
 }
 
+#[cfg(not(test))]
 pub async fn get_usd_nanoerg() -> Result<AssetsExchangeRate<Usd, NanoErg>, DataPointSourceError> {
     let url = "https://api.coingecko.com/api/v3/simple/price?ids=ergo&vs_currencies=USD";
     let resp = reqwest::get(url).await?;
@@ -50,6 +51,19 @@ pub async fn get_usd_nanoerg() -> Result<AssetsExchangeRate<Usd, NanoErg>, DataP
     }
 }
 
+#[cfg(test)]
+pub async fn get_usd_nanoerg() -> Result<AssetsExchangeRate<Usd, NanoErg>, DataPointSourceError> {
+    // Convert from price Erg/USD to nanoErgs per 1 USD
+    let nanoerg_per_usd = NanoErg::from_erg(1.0 / 1.67);
+    let rate = AssetsExchangeRate {
+        per1: Usd {},
+        get: NanoErg {},
+        rate: nanoerg_per_usd,
+    };
+    Ok(rate)
+}
+
+#[cfg(not(test))]
 pub async fn get_usd_lovelace() -> Result<AssetsExchangeRate<Usd, Lovelace>, DataPointSourceError> {
     let url = "https://api.coingecko.com/api/v3/simple/price?ids=cardano&vs_currencies=USD";
     let resp = reqwest::get(url).await?;
@@ -71,6 +85,19 @@ pub async fn get_usd_lovelace() -> Result<AssetsExchangeRate<Usd, Lovelace>, Dat
     }
 }
 
+#[cfg(test)]
+pub async fn get_usd_lovelace() -> Result<AssetsExchangeRate<Usd, Lovelace>, DataPointSourceError> {
+    // Convert from price Erg/USD to nanoErgs per 1 USD
+    let lovelace_price = Lovelace::from_ada(1.0 / 0.606545);
+    let rate = AssetsExchangeRate {
+        per1: Usd {},
+        get: Lovelace {},
+        rate: lovelace_price,
+    };
+    Ok(rate)
+}
+
+#[cfg(not(test))]
 pub async fn get_btc_nanoerg() -> Result<AssetsExchangeRate<Btc, NanoErg>, DataPointSourceError> {
     let url = "https://api.coingecko.com/api/v3/simple/price?ids=ergo&vs_currencies=BTC";
     let resp = reqwest::get(url).await?;
@@ -92,6 +119,18 @@ pub async fn get_btc_nanoerg() -> Result<AssetsExchangeRate<Btc, NanoErg>, DataP
     }
 }
 
+#[cfg(test)]
+pub async fn get_btc_nanoerg() -> Result<AssetsExchangeRate<Btc, NanoErg>, DataPointSourceError> {
+    // Convert from price BTC/ERG to nanoERG/BTC
+    let erg_per_usd = NanoErg::from_erg(1.0 / 0.00003791);
+    let rate = AssetsExchangeRate {
+        per1: Btc {},
+        get: NanoErg {},
+        rate: erg_per_usd,
+    };
+    Ok(rate)
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;