test: Add definition unit tests

Author: NeedleInAJayStack

Sources/Units/Unit/DefaultUnits.swift

@@ -2,7 +2,10 @@ import Foundation
 
 /// Static type containing this package's pre-defined units
 enum DefaultUnits {
-    // MARK: If adding units to this list, add corresponding entries in the `Unit+DefaultUnits.swift` & `Registry.swift` files
+    // MARK: If adding units to this list, add corresponding entries to the following files:
+    // - Unit+DefaultUnits.swift
+    // - Registry.swift
+    // - DefinitionTests.swift
 
     // MARK: Acceleration
 

Tests/UnitsTests/DefinitionTests.swift

@@ -0,0 +1,50 @@
+import Units
+import XCTest
+
+/// Test conversion coefficients, registry inclusion, and default value inclusion for all units
+/// To check all 3, we use tests of the form
+/// ```swift
+/// try XCTAssertEqual(Measurement("1<symbol>"), <coefficient>.measured(in: .<base_unit>).convert(to: .<name>))
+/// ```
+/// This really is just a double-check that the unit coefficient assigned as expected, and is included in all the appropriate code locations.
+class DefinitionTests: XCTestCase {
+    func testData() throws {
+        try XCTAssertEqual(Measurement("1bit"), 1.measured(in: .bit).convert(to: .bit))
+        try XCTAssertEqual(Measurement("1kbit"), 1000.measured(in: .bit).convert(to: .kilobit))
+        try XCTAssertEqual(Measurement("1Mbit"), 1e6.measured(in: .bit).convert(to: .megabit))
+        try XCTAssertEqual(Measurement("1Gbit"), 1e9.measured(in: .bit).convert(to: .gigabit))
+        try XCTAssertEqual(Measurement("1Tbit"), 1e12.measured(in: .bit).convert(to: .terabit))
+        try XCTAssertEqual(Measurement("1Pbit"), 1e15.measured(in: .bit).convert(to: .petabit))
+        try XCTAssertEqual(Measurement("1Ebit"), 1e18.measured(in: .bit).convert(to: .exabit))
+        try XCTAssertEqual(Measurement("1Zbit"), 1e21.measured(in: .bit).convert(to: .zetabit))
+        try XCTAssertEqual(Measurement("1Ybit"), 1e24.measured(in: .bit).convert(to: .yottabit))
+        
+        try XCTAssertEqual(Measurement("1Kibit"), 1024.measured(in: .bit).convert(to: .kibibit))
+        try XCTAssertEqual(Measurement("1Mibit"), pow(1024, 2).measured(in: .bit).convert(to: .mebibit))
+        try XCTAssertEqual(Measurement("1Gibit"), pow(1024, 3).measured(in: .bit).convert(to: .gibibit))
+        try XCTAssertEqual(Measurement("1Tibit"), pow(1024, 4).measured(in: .bit).convert(to: .tebibit))
+        try XCTAssertEqual(Measurement("1Pibit"), pow(1024, 5).measured(in: .bit).convert(to: .pebibit))
+        try XCTAssertEqual(Measurement("1Eibit"), pow(1024, 6).measured(in: .bit).convert(to: .exbibit))
+        try XCTAssertEqual(Measurement("1Zibit"), pow(1024, 7).measured(in: .bit).convert(to: .zebibit))
+        try XCTAssertEqual(Measurement("1Yibit"), pow(1024, 8).measured(in: .bit).convert(to: .yobibit))
+        
+        try XCTAssertEqual(Measurement("1byte"), 8.measured(in: .bit).convert(to: .byte))
+        try XCTAssertEqual(Measurement("1kB"), 8000.measured(in: .bit).convert(to: .kilobyte))
+        try XCTAssertEqual(Measurement("1MB"), 8e6.measured(in: .bit).convert(to: .megabyte))
+        try XCTAssertEqual(Measurement("1GB"), 8e9.measured(in: .bit).convert(to: .gigabyte))
+        try XCTAssertEqual(Measurement("1TB"), 8e12.measured(in: .bit).convert(to: .terabyte))
+        try XCTAssertEqual(Measurement("1PB"), 8e15.measured(in: .bit).convert(to: .petabyte))
+        try XCTAssertEqual(Measurement("1EB"), 8e18.measured(in: .bit).convert(to: .exabyte))
+        try XCTAssertEqual(Measurement("1ZB"), 8e21.measured(in: .bit).convert(to: .zetabyte))
+        try XCTAssertEqual(Measurement("1YB"), 8e24.measured(in: .bit).convert(to: .yottabyte))
+        
+        try XCTAssertEqual(Measurement("1KiB"), 8 * 1024.measured(in: .bit).convert(to: .kibibyte))
+        try XCTAssertEqual(Measurement("1MiB"), 8 * pow(1024, 2).measured(in: .bit).convert(to: .mebibyte))
+        try XCTAssertEqual(Measurement("1GiB"), 8 * pow(1024, 3).measured(in: .bit).convert(to: .gibibyte))
+        try XCTAssertEqual(Measurement("1TiB"), 8 * pow(1024, 4).measured(in: .bit).convert(to: .tebibyte))
+        try XCTAssertEqual(Measurement("1PiB"), 8 * pow(1024, 5).measured(in: .bit).convert(to: .pebibyte))
+        try XCTAssertEqual(Measurement("1EiB"), 8 * pow(1024, 6).measured(in: .bit).convert(to: .exbibyte))
+        try XCTAssertEqual(Measurement("1ZiB"), 8 * pow(1024, 7).measured(in: .bit).convert(to: .zebibyte))
+        try XCTAssertEqual(Measurement("1YiB"), 8 * pow(1024, 8).measured(in: .bit).convert(to: .yobibyte))
+    }
+}